Selenidostannate

Selenidostannates are chemical compounds which contain anionic units of selenium connected to tin. They can be considered as stannates where selenium substitutes for oxygen. Similar compounds include the selenogermanates and thiostannates. They are in the category of chalcogenidotetrelates or more broadly chalcogenometallates.

Formation

Some selenidostannates can be made by treating tin diselenide (SnSe₂) with an alkali selenide dissolved in water.^[1] Other possible solvents include  choline chloride with 1,8-diaminooctane,^[2]

Properties

Most selenidostannates are semiconductors. Their resistance drops on exposure to light. Also selenidostannates are often coloured, most often orange, red or yellow.

Many are unstable in humid air, as the water reacts with the selenidostannate to form hydrogen selenide (H₂Se).

Use

Selenidostannates are primarily of research interest. They are under investigation as photoelectric materials.

List

name	chem	mw	crystal system	space group	unit cell Å	volume	density	comment	references
tris(μ2-1,2-Diaminoethane)-1,2-diaminoethane-di-lithium triselenido-tin(iv)	Li4Sn2Se6 · 8en		monoclinic	C2/c	a=22.660 b=9.449 c=20.336 β=101.24°				[3]
diammonium	[NH4]2Sn4Se9		orthorhombic	Pnma	a =13.2274 b=12.4270 c=12.6102			supertetrahedra Sn4Se10 arranged in layers	[4]
bis(dimethylammonium) heptakis(μ-selenido)-tri-tin dimethylamine solvate	[NH2(CH3)2]2Sn3Se7·0.5NH(CH3)2		monoclinic	C2/c	a=23.5939 b=13.6409 c=15.0372, β=102.177°			chains of Sn3Se8	[4]
tetrakis(ethylammonium) tetradecakis(μ-selenido)-hexa-tin	[NH3C2H5]2Sn3Se7		orthorhombic	Cmca	a=13.5561 b=24.0194 c=27.0184				[4]
bis(Ethylenediammonium) ethylenediamine bis((μ2-selenido)-diseleno-tin(iv))	[enH2]2[Sn2Se6] · en		triclinic	P1	a =8.636 b =11.044 c =6.613, α =104.48° β =110.76° γ =79.43°			twin edge-bridged SnSe4 tetrahedra	[5]
tetrakis(2-Aminoethylammonium) bis(μ2-selenido)-tetraselenido-di-tin(iv) 1,2-diaminoethane	[enH]4[SnIV2Se6] · en		triclinic	P1	a=11.212 b=11.631 c=13.097, α=79.40° β=76.82° γ=64.82°				[6]
catena(Ethylenediammonium hemiethylenediamine (μ3-selenido)-hexakis(μ2-selenido)-tri-tin(iv))	[enH2][Sn3Se7]·0.5en		orthorhombic	Fdd2	a=23.597 b=27.563 c=13.877				[4][5]
catena-(tetrakis(μ2-Seleno)-ethylenediamine-di-tin(iv))	[2 SnSe2·en]		orthorhombic	Pca21	a 1=3.724 b =11.866 c =13.647				[5]
	[(C2H5)3NH]2Sn3Se7			P212121				2.12 eV	[4]
	[(C2H5)3NH]2Sn3Se7·0.25H2O		monoclinic	P21/n				2.1 eV	[4]
	(Et4N)2Sn3Se7		monoclinic	P21/m	a=10.140 b=13.858 c=12.071, β=100.649°				[7]
	[NEt4]4[Sn4Se10]		cubic	P43n	a = 22.170	10897			[8]
bis(tetrapropylammonium) nonaselenidotetrastannate(IV)	([C3H7]4N)2[Sn4Se9]		monoclinic	P21/n	a = 15.328, b = 19.058, c = 15.398, β = 97.947°, Z = 4	4454.7		orange	[9]
	(C7N4OH16)2Sn3Se7·H2		orthorhombic	Pbca					[4]
	(NH3(CH2)8NH3)Sn3Se7		triclinic	P1					[4]
Octane-1,8-diammonium (μ3-selena)-hexakis(μ2-selena)-tri-tin	(NH3(CH2)8NH3)Sn3Se7		triclinic	P1	a=8.4419 b=11.6441 c=13.1857 α=66.636° β=77.989° γ=83.919°				[10]
Decane-1,10-diammonium (μ3-selena)-hexakis(μ2-selena)-tri-tin	(NH3(CH2)10NH3)Sn3Se7		monoclinic	C2/c	a=23.726 b=13.910 c=15.954 β=111.915°				[10]
	(NH3(CH2)10NH3)Sn3Se7		monoclinic	C2/c					[4]
tetrakis(1,2-dimethyl-3-propyl-1H-imidazol-3-ium) bis(μ3-selenido)-octadecakis(μ2-selenido)-nona-tin			monoclinic	P21/c	a =18.652 b=20.353 c=20.196 β=105.244°				[11]
tetrakis(1,2-dimethyl-3-propyl-1H-imidazol-3-ium) dodecakis(μ2-selenido)-diselenido-hexa-tin	[Mmpmim]4Sn6Se14		monoclinic	P21/c	a=14.270 b=15.549 c=14.377 β=92.749°				[11]
bis(1,2-dimethyl-3-propyl-1H-imidazol-3-ium) (μ3-selenido)-hexakis(μ2-selenido)-tri-tin	[Mmpmim]2Sn3Se7		trigonal	P3221	a=13.9470 b=13.9470 c=27.8553				[11]
octakis(1,2-dimethyl-3-butyl-1H-imidazol-3-ium) tetrakis(μ3-selenido)-docosakis(μ2-selenido)-diselenido-dodeca-tin	[Mmpmim]8Sn12Se26		monoclinic	P21/c	a=24.538 b=13.961 c=19.434 β=94.539°				[11]
tetra(1,2-dimethyl-3-butyl-1H-imidazol-3-ium) bis(μ3-selenido)-dodecakis(μ2-selenido)-hexa-tin	[Mmbmim]4Sn6Se14		trigonal	P3221	a=13.9381 c=27.774				[11]
	[prmmim]2[Sn3Se7]			P3221					[4]
Bmmim=1-butyl-2,3-dimethylimidazolium	[bmmim]2[Sn3Se7]			P3221				band gap 2.2 eV	[4]
Bzmim = 1-benzyl-3-methylimidazolium bis(1-benzyl-3-methylimidazolium) heptakis(μ-selenido)-tri-tin	[Bzmim]2[Sn3Se7]		orthorhombic	Pbca	a=14.297 b=13.8808 c=16.8855 β=99.817°				[12]
Emim = 1-ethyl-3-methylimidazolium pentakis(1-ethyl-3-methylimidazolium) bis(heptakis(μ-selenido)-tri-tin) chloride unknown solvate	[Emim]5[Sn3Se7]2Cl		hexagonal	P63/mmc	a=13.8331 c=18.4649				[12]
	[DBNH]2[Sn3Se7]·PEG		monoclinic	C2/c				band gap 2.13 eV	[4]
	[DBNH]3[NH4][Sn6Se14]		trigonal	R3				band gap 2.02 eV	[4]
	(H+-DBN)2[Sn3Se7]			Cmc21				band gap 2.02 eV	[4]
	(CH3)3N(CH2)2OH]2[Sn3Se7]		orthorhombic	Pbca				band gap 2.35 eV	[4]
catena-[bis(2-hydroxy-N,N,N-trimethylethan-1-aminium) heptakis(μ-selenido)-tri-tin monohydrate]	(CH3)3N(CH2)2OH]2[Sn3Se7]∙H2O		monoclinic	P21/n	a=9.8365 b=13.5796 c=20.7384 β=92.727° Z=4	2893.0	2.606	orange;	[4][13]
catena-[bis(N,N,N-trimethylpropan-1-aminium) heptakis(μ-selenido)-tri-tin]	(CH3)3N(CH2)2CH3]2[Sn3Se7]		orthorhombic	Pbca	a =17.534 b =13.7273 c =24.1221 Z=8	5806.2	2.547	orange	[14]
bis(N,N,N-trimethylbutanaminium) poly[heptaselenidotristannate(IV)]	(Bu(CH3)3N)2[Sn3Se7]		monoclinic	C2/c	a = 23.950, b = 13.760, c = 20.011, β = 114.565°, Z = 8	5998		orange	[4][15]
AEPP = N-aminoethylpiperazine	[AEPPH2]2[Sn5Se12]		triclinic	P1	a = 10.6351, b = 10.6850, c = 10.7771, α = 61.344°, β = 62.442°, γ = 67.468				[16]
phen=1,10-Phenanthroline	(CH3NH3)4(Sn2Se6)·6phen		triclinic	P1	a 10.594 b 12.225 c 14.945 α 83.589° β 83.133° γ 86.604°				[17]
Im=imidazolium catena-(pentakis(3-n-butyl-1-methylimidazolium) dodecakis(μ-selenido)-nona-tin tetrafluoroborate)	(C4C1C1Im)5[Sn9Se20][BF4]		monoclinic	P21/n	a=13.878 b=20.365 c=31.026 β =91.326° Z=4	8766	2.652	orange	[18]
DMMP=2,6-dimethylmorpholine	(DMMPH)4[Sn2Se6]		monoclinic	P21/n	a=6.158 b=22.381 c=14.642 β=93.57° Z=2	2014.1	1.926	yellow	[18]
catena-(bis(1-ethyl-3-methylimidazolium) bis(2,6-dimethylmorpholin-4-ium) tetradecakis(μ-selenido)-hexa-tin)	(C2C1Im)2(DMMPH)2[Sn6Se14]		monoclinic	P21/n	a=20.616 b=13.857 c=19.629 β=107.40° Z=4	5351	2.821	orange	[18]
catena-[tetrakis(3-n-Butyl-1,2-dimethyl-1H-imidazol-3-ium) bis(μ3-selenido)-undecakis(μ2-selenido)-selenido-hexa-tin(iv)]	[BMMIm]4[Sn6Se14]		monoclinic	P21/c	a 24.2744 b 13.8901 c 19.1763 β 94.083° Z=4	6449.3	2.503	orange	[19]
catena-(hexadecakis(1-butyl-2,3-dimethylimidazolium) octakis(μ3-selenido)-octatetracontakis(μ2-selenido)-tetracosa-tin)	[BMMIm]16[Sn24Se56]		trigonal	P32	a=27.8622 c=28.0566 Z=3	18862.4	2.568	red	[19]
catena-(tris(3-Butyl-1,2-dimethylimidazolium) 2,6-dimethylmorpholin-4-ium (μ3-selenido)-dodecakis(μ2-selenido)-selenido-hexa-tin)	[BMMIm]3[DMMPH][Sn6Se14]		triclinic	P1	a 11.1358 b 12.6745 c 23.362, α 89.690° β 88.473° γ 72.098° Z=2	3136.6	2.534	orange or yellow (low temp)	[19]
1-butyl-3-methyl-inidazolinium	[BMIm]4[Sn9Se20]		monoclinic	Cc	a=19.901 b=26.494 c=14.447 β=105.34 Z=4	7361	2.892	red	[20]
catena-[bis(2-hydroxy-N,N,N-trimethylethan-1-aminium) heptakis(μ-selenido)-tri-tin monohydrate]	[HOCH2CH2N(CH3)3]2Sn3Se7·H2O		monoclinic	P21/n	a 9.8365 b 13.5796 c 20.7384 β 92.727°			orange (high temp) or yellow	[21]
catena-[bis(N,N,N-trimethylpropan-1-aminium) heptakis(μ-selenido)-tri-tin]	[CH3CH2CH2N(CH3)3]2Sn3Se7		orthorhombic	Pbca	a 17.403 b 13.7025 c 23.9113		2.852	yellow	[21]
tetrakis(piperidinium) bis(μ-selenido)-tetraselenido-di-tin	{[Sn2Se6]·4(C5NH12)}		monoclinic	P21/n	a 10.3277 b 10.2808 c 15.7823 β 96.725°		2.0110	red	[22]
catena-[bis(3,6,7,8-tetrahydro-2H-pyrrolo[1,2-a]pyrimidin-5-ium) tetrakis(μ-selenido)-hexa-tin]	{[Sn3Se7]·2(HDBN)} DBN = 1,5-diazabicyclo[4.3.0]non-5-ene		orthorhombic	Cmc21	a 13.4435 b 24.4817 c 14.4494			red	[22]
	[dabcoH]2[(CH3)2NH2]2[Sn2Se6]		monoclinic	C2/m	a=20.172 b=11.674 c=6.476 β=103.15 Z=2	1485.2	2.303	yellow	[23]
	(N2H4)3(N2H5)4Sn2Se6		triclinic	P1	a = 6.6475, b = 9.5474, c = 9.883, α = 94.110°, β = 99.429°, γ = 104.141°, Z = 1				[24]
bis(1-Aminoethylammonium) bis(4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo(8.8.8)hexacosane-potassium) bis(μ2-seleno)-tetraseleno-di-tin(iv)	(enH)2(2,2,2-crypt-K)2Sn2Se6		monoclinic	P21/n	a=8.442 b=25.877 c=14.821 β=104.19°
	(MeSn)4Se6		triclinic	P1	a = 9.147, b =10.495 c =10.508, α = 85.60, β = 89.83 γ =65.71° Z=2	916		adamantane structure	[25]
	Na4SnS4		tetragonal	I41acd					[26]
	Na4SnS4		tetragonal	P421c	a=7.84679 c=6.95798, Z=2	428.42		yellow	[26]
	Na4SnSe4·14H2O								[26]
	Na4SnSe4·16H2O		monoclinic	P21/m	a = 8.673, b = 16.563, c = 8.647, β = 92.10°, Z = 2			tetrahedra; Sn-Se bond length 2.504−2.527 Å	[27][1]
	Na4Sn2S6·5H2O								[28]
	Na4Sn2Se6·13H2O		triclinic	P1	a = 7.106, b = 10.330, c = 19.009, α = 78.60, β = 85.66, γ = 72.85° Z = 2 (at −130 °C)			orange-red; tetrahedral edge-shared pairs	[27][29]
	Na4Ge2Se6 · 16 H2O		monoclinic	P21/c	a = 9.894, b = 11.781, c = 12.225, β = 92.90°, Z = 2				[30]
	Na4Sn3Se8							trigonal bipyramid + tetrahedron	[27]
	Na6Sn4Se11 · 22 H2O		monoclinic	C2/c	a 15.325 b 11.634 c 26.739 β 95.81°			yellow-orange	[31]
	Na6Sn2Se7·16H2O							red	[29]
catena-(tris(1-Amino-2-ammonioethane) octakis(μ3-selenido)-hexakis(μ2-selenido)-sodium-hexa-tin sesquikis(dimethylamine) sesquihydrate)	(enH)3Na[Sn3Se7]2·1.5Me2NH·1.5H2O			R32	a=13.8647 c=18.962			Na+ ion conductor	[32]
bis((μ4-Selenido)-(μ3-selenido)-bis(μ2-ethylene-1,2-diamine))-tetra-sodium-tin	[Na4(en)4][SnSe4]		orthorhombic	P41212	a=13.090 b=13.090 c=14.548				[33]
	Li2MgNaSe4		orthorhombic	Pmn21	a = 8.40 b = 7.18 c = 6.73 Z=2	405.9	3.867	yellow; moisture absorbing	[34]
	SnPSe3		monoclinic	Pn	a=6.8161 b=7.7264 c=9.6437 β=91.073°				[35]
	K4SnSe4		orthorhombic	Pnma	a=14.714 b=10.323 c=8.248 Z=4			yellow	[36]
	2D-K2Sn2Se5		orthorhombic	Pbca	a=13.0246 b=12.186 c=14.135 Z=8				[37]
	K4Sn2Se6							tetrahedral edge-shared pairs	[27]
	K4Sn3Se8		orthorhombic	Ccca	a 8.214 b 27.795 c 8.2136				[38]
	K0.5[Sn3Se7]		hexagonal	P6522	a=13.8325 c 43.295 Z=12	7174.1	2.579	red	[18]
	K6Sn4Se11 . 8H2O		monoclinic	C2/c	a =28.004 b =9 c =15.192, β 113.8°				[7]
	K6[SnIII2Se6]								[6]
	K4Sn4Se10·4.5H2O		trigonal	R3	a=15.32 c=21.019				[39]
tetrakis(Tetramethylammonium) (hexakis(μ2-seleno)-di-tin(iv)-potassium)	K(N(CH3)4)3Sn2Se6		triclinic	P1	a 9.587 b 10.005 c 15.996 α 95.15° β 92.81° γ 106.96°				[40]
(μ2-Ethylene-1,2-diamine-N,N')-bis(ethylene-1,2-diamine-N)-bis(1,4,7,10,13,16-hexaoxacyclo-octadecane)-di-potassium (μ2-ethylene-1,2-diamine-N,N')-(ethylene-1,2-diamine-N)-bis(1,4,7,10,13,16-hexaoxacyclo-octadecane)-di-potassium hexakis(μ2-selenido)-(tetraselenoxy)-tetra-tin(iv)	[18-crown-6-K]4[Sn4Se10]·5en		monoclinic	P21/n	a=22.003 b=18.966 c=24.392 β=97.548°				[41]
dipotassium(+) bis[(1,4,7,10,13,16-hexaoxacyclooctadecane)potassium(+)] hexaselenodistannate(4-) tetrakis(ethylenediamine) solvate (18-crown-6)	K2[K(C12H24O6)]2[Sn2Se6].4C2H8N2		monoclinic	P21/n	a=15.634 b=8.479 c=23.404 β=108.60°				[42]
bis((4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo(8.8.8)hexacosane)-potassium) tris(tetraselenido)-tin(iv)	[K-(2,2,2-crypt)]2Sn(Se4)3		triclinic	P1	a=10.7088 b=12.9986 c=21.7865 α=86.299° β=81.598° γ=87.258°				[43]
	Ca(en)4Ca(en)3[Sn2Se6]		triclinic	P1	a = 10.2708, b = 12.2739, c = 16.3103, α = 93.576°, β = 90.609°, γ = 109.269°, Z = 1	1936.09			[44]
	[VII(dien)2]2[Sn2Se6]		monoclinic	P21/n	a 9.7686 b 15.094 c 12.517 β 91.007°			band gap 2.11 eV	[45]
catena-(tetraethylenepentaminedi-ium octakis(μ-selenido)-bis(tetraethylenepentamine)-tetraselenolato-tetra-tin(iv)-di-vanadium(iii))	[H2tepa]0.5[VIII(tepa)(μ-Sn2Se6)]		orthorhombic	Abm2	a=7.808 b=41.97 c=16.982 Z=8	5565	2.496		[46]
tepa = tetraethylenepentamine bis(Hydroxy-tetraethylenepentamine-chromium) 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate) monohydrate	[Cr(tepa)(OH)]2Sn2Se6·H2O		orthorhombic	Pbcn	a=16.767 b=14.552 c=14.859			2.08 eV	[47]
peha = pentaethylenehexamide bis(Pentaethylenehexamine-chromium) dichloride 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate)	[Cr(peha)]2(Sn2Se6)Cl2		monoclinic	P21/n	a=9.636 b=14.361 c=15.357 β=106.50°			2.19 eV	[47]
en = ethylenediamine, pip = piperazine pentakis(tris(ethylenediamine)-chromium(iii)) bis(tetrakis(selenyl)-tin(iv)) heptakis(chloride) piperazine solvate	[Cr(en)3]2.5[SnSe4]·Cl3.5·(pip)0.5·1.5H2O		trigonal	R3c	a=15.4035 c =61.487			band gap 2.23 eV;SnSe4 tetrahedron	[2]
catena-[(μ3-Selenido)-(μ2-selenido)-bis(1,2-diaminoethane)-selenido-manganese-tin]	SnSe3Mn(en)2		monoclinic	P21/n	a =9.4565 b =11.2896 c =12.7937 β =103.765° Z=4		2.657	red	[48]
catena-[(μ3-Selenido)-bis(μ2-selenido)-(1,2-diaminoethane)-manganese-tin]	SnSe3Mn(en)		orthorhombic	Pbca	a=13.9290 b=7.5261 c=19.2572 Z=8	2018.7	3.097	red	[48]
catena-[bis(μ3-Selenido)-bis(μ2-selenido)-bis(1,2-diaminoethane)-di-manganese-tin]	MnSnSe4Mn(en)2		orthorhombic	Pnma	a=13.1101 b=14.8267 c=7.9466 Z=4	1544.66	2.858	yellow	[48]
pentaehtylenehexaamine	[Mn(peha)][Sn3Se7]		monoclinic	P21/n					[4]
	[Mn(dien)2]Sn3Se7·0.5H2O		monoclinic	P21/n				band gap 1.89 eV	[4]
	[Mn(en)2.5(en-Me)0.5][Sn3Se7]		monoclinic	P21/c					[4]
catena-[tris(ethane-1,2-diamine)-manganese heptakis(μ-selenido)-tri-tin]	[Mn(en)3][Sn3Se7]		monoclinic	P21/n	a=12.2277 b=13.1904 c=15.9272 β=100.174°			red	[4][49]
catena-[bis(N-(2-(amino)ethyl)ethane-1,2-diamine)-manganese heptakis(μ-selenido)-tri-tin monohydrate]	[Mn(dien)2][Sn3Se7]∙H2O		monoclinic	P21/n	a=12.3987 b=13.3150 c=16.6672 β=96.378°			red; band gap 2.04 eV	[4][49]
	[Mn(dien)2]Sn3Se7·0.5H2O		monoclinic	P21/n	a 12.322 b 13.300 c 16.706 β 96.331°				[50]
bis(bis(N-(2-(amino)ethyl)ethane-1,2-diamine)-manganese) bis(μ-selenido)-tetrakis(selenido)-di-tin	[Mn(dien)2]2Sn2Se6		monoclinic	P21/n	a 12.677 b 9.585 c 15.595 β 102.49(3)°				[50]
	[Mn(dien)2]MnSnSe4		orthorhombic	C2221	a=9.002 b=17.761 c=12.967			band gap 2.25 eV	[51]
catena-[tris(ethane-1,2-diamine)-manganese(ii) (μ-diselenido)-hexakis(μ-selenido)-tri-tin]	[Mn(en)3]Sn3Se6(Se2)		monoclinic	P21/n	a 11.974 b 14.046 c 15.893, β 99.78°				[52]
catena-((bis(diethylenetriamine)-manganese(ii)) bis(μ-selenido)-manganese)	[Mn(en)3][Sn(Se4)3]		triclinic	P1	a 10.222 b 12.175 c 12.394, α 89.37° β 74.97° γ 75.66°				[52]
en = ethylenediamine, hda = N-(2-hydroxyethyl)ethylenediamine) bis(bis(ethylenediamine)-(N-(2-hydroxyethyl)ethylenediamine)-manganese(ii)) bis(μ-selenido)-tetrakis(selenido)-di-tin	[Mn(en)2(hda)]2[Sn2Se6]		monoclinic	P21/n	a 9.1189 b 12.3968 c 17.515 β 97.010°				[53]
catena-[bis(N-(2-hydroxyethyl)ethylenediamine)-manganese(ii) bis(μ-selenido)-manganese bis(μ-selenido)-tin]	[Mn(hda)2][SnMnSe4]		monoclinic	C2/c	a 9.4497 b 17.6025 c 13.1121 β 103.617°				[53]
dien = diethylenetriamine catena-[bis(diethylenetriamine)-manganese(ii) bis(μ-selenido)-manganese bis(μ-selenido)-tin]	[Mn(dien)2][SnMnSe4]		orthorhombic	C2221	a 9.0169 b 17.740 c 12.9543				[53]
heptakis(μ2-selenido)-(tetraethylenepentamine)-manganese(ii)-tri-tin(iv)	Mn(tepa)·Sn3Se7		orthorhombic	P212121	a=12.533 b=13.709 c=13.989				[54]
tetrakis(μ2-selenido)-bis(seleno)-bis(tetraethylenepentamine)-di-manganese(ii)-di-tin(iv)	[Mn(tepa)]2(μ2-Sn2Se6)		tetragonal	I41/a	a=26.483 b=26.483 c=10.1423				[54]
hexakis(μ2-selenido)-tetrakis(1,10-phenanthroline)-di-manganese-di-tin dihydrate	{[Mn(phen)2]2(μ2-Sn2Se6)}·H2O		monoclinic	P21/n	a 11.061 b 10.061 c 25.21 β 90.081°				[17]
catena-((μ3-selenido)-bis(μ2-selenido)-(1,10-phenanthroline)-manganese-tin)	[Mn(phen)]2(μ4-Sn2Se6)		triclinic	P1	a 9.721 b 10.257 c 10.346, α 118.24° β 112.53° γ 95.75°				[17]
hexakis(μ-2-aminoethan-1-olato)-octakis(μ-selenido)-hepta-manganese-di-tin	Mn7(ea)6(SnSe4)2		orthorhombic	Pccn	a=14.886 b=19.354 c=12.4314 Z=4	3581.5	2.993	orange	[55]
catena-(pentakis(μ2-selenido)-bis(1,10-phenanthroline)-manganese-di-tin)	[Mn(phen)2](Sn2Se5)		monoclinic	C2/c	a 16.639 b 12.961 c 14.088β 117.91°				[17]
catena-[tris(3-butyl-1,2-dimethyl-1H-imidazol-3-ium) bis(tris(ethane-1,2-diamine)-manganese) icosakis(μ-selenido)-selenido-nona-tin chloride]	(Bmmim)3[Mn(en)3]2[Sn9Se21]Cl		monoclinic	P21/c	a=19.4488 b=19.5108 c=26.6148 β=109.587°			red	[49]
catena-[hexakis(1-butyl-2,3-dimethyl-1H-imidazol-3-ium) bis((N-(2-(amino)ethyl)ethane-1,2-diamine)-manganese) tetratriacontakis(selenido)-selenido-pentadeca-tin]	(Bmmim)6[Mn(dien)2]2Sn15Se35		monoclinic	P21/n	a=13.4256 b=29.904 c=19.5845 β=106.643°			red	[49]
catena-[hemikis(tris(ethane-1,2-diamine)-manganese) hemikis((N-methylethane-1,2-diamine)-bis(ethane-1,2-diamine)-mangnaese) heptakis(μ-selenido)-tri-tin]	[Mn(en)2.5(en-Me)0.5][Sn3Se7]		monoclinic	P21/c	a=12.1058 b=13.2204 c=18.2504 β=120.839° Z=4	2507.9	3.049	orange	[56]
catena-(bis(4-Aminobutan-1-aminium) tetrakis(μ2-selenido)-manganese-tin)	(1,4-dabH)2MnSnSe4		orthorhombic	Fdd2	a =23.287 b=25.410 c=6.6053				[57]
tetrakis(2,2'-bipyridine)-hexakis(μ-selenido)-di-tin-di-manganese	{Mn(2,2′-bipy)2}2(μ2-Sn2Se6)		monoclinic	P 21/n	a=8.756 b=20.960 c=12.484 β=95.66°				[58]
hexakis(μ2-Selenido)-bis(1,4,8,11-tetraazacyclotetradecane)-di-manganese(ii)-di-tin	{Mn(cyclam)}2(μ-Sn2Se6.15)		monoclinic	P21/n	a=9.949 b=16.783 c=11.649 β=105.208°				[59]
hexakis(μ2-Selenido)-bis(2,2';6',2''-terpyridine)-di-manganese(ii)-di-tin	{Mn(terpy)}2(μ-Sn2Se6)		triclinic	P1	a=9.430 b=10.872 c=11.090 α=117.86° β=102.83° γ=103.22°				[59]
tris(μ2-Selenido)-(2,2';6',2''-terpyridine)-manganese(ii)-tin	{Mn(terpy)}2(μ-Sn2Se6)		triclinic	P1	a=9.923 b=10.027 c=10.959 α=107.29° β=97.57° γ=115.10°				[59]
	(NMe4)2[MnSn4Se10]		tetragonal	I4	a=9.865 c =15.317			red	[60]
	Li4MnSn2Se7		monoclinic	Cc	a=18.126 b=7.221 c=10.470 β=93.43° Z=4	1403.2	4.132	orange	[61]
DBN=1,5-diazabicyclo[4.3.0]non-5-ene	[DBNH]2[MnSnSe4]		tetragonal	P42/ncm	a=13.0305 c =6.6220				[62]
	[Fe(tatda)]Sn3Se7		monoclinic	P21/n				1.93 eV	[4]
catena-((bis(diethylenetriamine)-iron(ii)) bis(μ-selenido)-iron)	[Fe(dien)2]FeSnSe4		orthorhombic	C2221	a =8.974 b =17.755 c =12.967			band gap 2.21 eV	[51]
bis(bis(diethylenetriamine)-iron(ii)) bis(μ-selenido)-tetraselenido-di-tin	[Fe(dien)2]2Sn2Se6		monoclinic	P21/n	a=12.563 b=9.655 c=15.566 β=102.76°			band gap 2.60 eV	[51]
bis(bis(diethylenetriamine)-iron(ii)) ethane-1,2-diammonium bis(2-ammonioethyl)amine bis(bis(μ-selenido)-tetraselenido-di-tin)	[H2en][H2dien][Fe(dien)2]2(Sn2Se6)2		triclinic	P1	a=8.727 b=12.794 c=14.918, α=66.09° β=84.06° γ=75.33°			band gap 2.58 eV	[51]
catena-[tris(ethane-1,2-diamine)-iron(ii) (μ-diselenido)-hexakis(μ-selenido)-tri-tin]	[Fe(en)3]Sn3Se6(Se2)		monoclinic	P21/c	a =11.950 b =14.083 c =17.995 β =120.25°				[52]
tris(ethane-1,2-diamine)-iron(ii) tris[tetraselanato]-tin	[Fe(en)3][Sn(Se4)3]		triclinic	P1	a 10.223 b 12.106 c 12.263, α 89.40° β 89.40° γ 75.45°				[52]
tatda = 3,6,9,12-tetraazatetradecane-1,14-diamine catena-[(3,6,9,12-tetraazatetradecane-1,14-diamine)-iron heptakis(μ-selenido)-tri-tin]	[Fe(tatda)]Sn3Se7		monoclinic	P21/n	a 12.1067 b 13.3225 c 17.0827 β 96.978°				[50]
hexakis(μ2-selenido)-tetrakis(1,10-phenanthroline)-di-iron-di-tin	[Fe(phen)2]2(μ2-Sn2Se6)		monoclinic	C2/c	a 26.192 b 11.248 c 17.843 β 98.816°				[17]
catena-(bis(tris(1,10-phenanthroline)-iron) bis(μ3-selenido)-dodecakis(μ2-selenido)-hexa-tin hydrate)	[Fe(phen)3](Sn3Se7)·1.25H2O		trigonal	R3c	a=13.9483 c 75.476			band gap 1.97 eV	[17]
bipy = bipyridine catena-[nonakis(μ-selenido)-tetra-tin tris(2,2'-bipyridine)-iron dihydrate]	[Fe(bipy)3]Sn4Se9·2H2O		trigonal	R3c	a=26.902 c 30.673				[63]
	[Fe(bipy)3]2[Sn3Se7]2·bipy·2H2O		monoclinic	P21/c	a 27.055 b 13.391 c 24.756, β 103.88°				[63]
heptakis(μ-selenido)-(tetra-ethylenepentamine)-iron-tri-tin	Sn3Se7Fe(tepa)		orthorhombic	P212121	a 12.4958 b 13.7745 c 14.0233		3.112	black	[22]
bis[tris(ethane-1,2-diamine)-iron] 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate)	[Fe(en)3]2Sn2Se6		orthorhombic	Pbca	a =15.5062(9)Å b=11.8662 c=19.0966		2.146	red	[22]
	{CpFe(CO)2}3{CpFe(CO)}Sn3Se4		triclinic	P1	a 12.2066 b 12.584 c 13.0007, α 90.632° β 90.068° γ 120.836°				[64]
	(NMe4)2[FeSn4Se10]		tetragonal	I4	a=9.878 c=15.345				[60]
	[Co(en)3]2Sn2Se6		orthorhombic	Pbca	a=15.640 b=11.564 c=18.742				[46]
	[Co(dien)2]2Sn2Se6		monoclinic	P21/n	a=10.2224 b=14.5788 c=12.3921 β=91.237°	1846.4		yellow; black with water, ultrasound turns yellow	[65][46][66]
	[Co(en)(trien)]2Sn2Se6		monoclinic	P21/n	a 7.929 b 15.855 c 14.262 β 93.436°				[67]
bis(tris(2,2'-bipyridine)-cobalt(ii)) heptakis(μ-selenido)-tri-tin(iv) hexakis(μ-selenido)-selenido-tri-tin(iv) 2,2'-bipyridine monohydrate	[Co(2,2′-bipy)3]2[Sn3Se7]2·(2,2′-bipy)·H2O		monoclinic	P21/c	a=27.032 b=13.392 c=24.763 β=103.85°				[58]
catena-[tris(ethylenediamine)-nickel hemikis(heptakis(μ-selenato)-selenato-tri-tin) hemikis(hexakis(μ-selenato)-selenato-tri-tin)]	[Ni(en)3][Sn3Se6.5(Se2)0.5]		orthorhombic	Pca21	a =14.88 b =1.8872Å c =13.859			1.95 eV;chains of [Sn3Se7]n2n– and [Sn3Se6(Se)2]n2n–	[2]
tris(ethylenediamine)-nickel(ii) tetrakis(μ-selanyl)-selanyl-di-tin	[Ni(en)3][Sn2Se5]		monoclinic	P21/n	a=8.7998 b=10.0736 c=22.655 β=90.763°				[68]
	[Ni(en)3]2[Sn2Se6]		orthorhombic		a=15.288 b=11.937 c=19.239	3511.0			[46]
catena-[tris(ethylenediamine)-nickel heptakis(μ-selenato)-tri-tin]	[Ni(en)3][Sn3Se7]		monoclinic	P21/n	a=12.32 b=13.19 c=15.73 β=101.07°			band gap 2.01 eV	[2]
catena-[tris(1,2-diaminoethane)-nickel(ii) pentakis(μ-selenido)-bis(selenido)-tri-tin(iv)]	[Ni(en)3]Sn3Se7.5		orthorhombic	Pca21	a 14.869 b 11.888 c 13.860				[52]
tris(ethane-1,2-diamine)-nickel tris[tetraselanato]-tin	[Ni(en)3][Sn(Se4)3]		triclinic	P1	a 10.104 b 12.048 c 12.107, α 89.52° β 75.44° γ 75.78°				[52]
phen = 1,10-phenanthroline tris(1,10-phenanthroline)-nickel(ii) heptakis(μ-selenato)-tri-tin(iv) sesquihydrate	[Ni(phen)3]Sn3Se7·1.5H2O		trigonal	R3	a=13.971 c=38.281				[69]
	[(Ni0.4Zn0.6)(en)6]Sn2Se6								[65]
catena-(tetrakis(1-n-Butyl-2,3-dimethylimidazolium) hemikis((μ2-triethylenetetramine)-bis(triethylenetetramine)-di-nickel) tris(μ3-selenido)-heptadecakis(μ2-selenido)-selenido-nona-tin)	2D-(Bmmim)8[Ni2(teta)2(μ-teta)]Sn18Se42		monoclinic	P21/n	a =18.9764 b= 25.1081 c =20.5731 β =100.870°				[70]
teta = triethylenetetramine (ethylenediamine)-(triethylenetetramine)-nickel(ii) (triethylenetetramine)-(N-(2-hydroxyethyl)ethylenediamine)-nickel(ii) hexakis(μ-selenido)-tetrakis(selenido)-tetra-tin	[Ni(teta)(en)][Ni(teta)(hda)][Sn4Se10]		monoclinic	P21/n	a 12.3191 b 17.7104 c 22.643 β 95.278°				[70]
tepa=tetraethylenepentamine catena-(tetrakis(1-n-Butyl-2,3-dimethylimidazolium) bis(chloro-(tetraethylenepentamine)-nickel) pentakis(μ3-selenido)-tricosakis(μ2-selenido)-(tetraethylenepentamine)-nickel-dodeca-tin)	2D-(Bmmim)4[Ni(tepa)Cl]2[Ni(tepa)Sn12Se28]		monoclinic	Pn	a=21.2230 b=13.4993 c=23.8715 β =112.461°				[70]
Bmmim=1-butyl-2,3-dimethylimidazolium	2D-(Bmmim)3[Ni(en)3]2[Sn9Se21]Cl		monoclinic	P21/c	a 19.488 b 19.626 c 26.793 β 109.930°				[53]
catena-(bis(1-n-Butyl-2,3-dimethylimidazolium) bis(tris(propane-1,2-diamine)-nickel) bis(bis(μ3-selenido)-heptakis(μ2-selenido)-tetra-tin))	3D-(Bmmim)2[Ni(1,2-pda)3]Sn8Se18		trigonal	R3c	a=27.7913 c 47.4281				[70]
catena-[bis(N-(2-(amino)ethyl)ethane-1,2-diamine)-nickel sesquikis(3-butyl-1,2-dimethyl-1H-imidazol-3-ium) hemikis(2-amino-N-(2-aminoethyl)ethylammonium) octadecakis(μ-selenido)-octa-tin]	2D-(Bmmim)2[Ni(teta)(en)][Sn3Se7]2		monoclinic	P21/c	a=31.088 b=10.5393 c=19.9712 β=99.966°				[71]
catena-[(N,N'-bis(2-(amino)ethyl)ethane-1,2-diamine)-(ethane-1,2-diamine)-nickel bis(1-butyl-2,3-dimethyl-1H-imidazol-3-ium) tridecakis(μ-selenido)-selenido-hexa-tin]	3D-(Bmmim)1.5(dienH)0.5Ni(dien)2[Sn4Se9]2		monoclinic	P21/c	a=24.3753 b=13.3778 c=17.7885 β=93.949°				[71]
	[Ni(tren)(en)]SnSe3∙H2O	638.64	monoclinic	P21/n	a=12.8150 b=10.0094 c=15.6626 β=???? Z=4	1885.8		band gap	[72]
bis((tris(2-aminoethyl)amine)-(ethane-1,2-diamine)-nickel(ii)) bis(μ-sulfido)-tetrathiolato-di-tin dihydrate	[Ni(tren)(en)]2[Sn2S6]·2H2O		monoclinic	P21/n	a 12.7041 b 9.8000 c 15.3989 β 108.843°			3.23 eV	[73]
bis((tris(2-aminoethyl)amine)-(ethane-1,2-diamine)-nickel(ii)) bis(μ-sulfido)-tetrathiolato-di-tin hexahydrate	[Ni(tren)(en)]2[Sn2S6]·6H2O		monoclinic	P21/c	a 12.5580 b 9.7089 c 16.0359 β 91.827°			3.16 eV	[73]
bis((tris(2-aminoethyl)amine)-(cyclohexane-1,2-diamine)-nickel(ii)) bis(μ-sulfido)-tetrathiolato-di-tin trihydrate	[Ni(tren)(1,2-dach)]2[Sn2S6]·3H2O		triclinic	P1	a 9.8121 b 10.0080 c 12.422, α 86.38° β 79.65° γ 65.71°			3.43 eV	[73]
bis((tris(2-aminoethyl)amine)-(cyclohexane-1,2-diamine)-nickel(ii)) bis(μ-sulfido)-tetrathiolato-di-tin tetrahydrate	[Ni(tren)(1,2-dach)]2[Sn2S6]·4H2O		monoclinic	P21/c	a 10.7119 b 19.0797 c 11.1005 β 104.803°			3.29 eV	[73]
bis((tris(2-aminoethyl)amine)-(propane-1,2-diamine)-nickel(ii)) bis(μ-sulfido)-tetrathiolato-di-tin tetrahydrate	[Ni(tren)(1,2-dap)]2[Sn2S6]·4H2O		monoclinic	C2/c	a 14.3925 b 15.1550 c 18.9307 β 99.108°			3.32 eV	[73]
bis((tris(2-aminoethyl)amine)-(2-(aminomethyl)pyridine)-nickel(ii)) bis(μ-sulfido)-tetrathiolato-di-tin decahydrate	[Ni(tren)(2amp)]2[Sn2S6]·10H2O		monoclinic	P21/n	a 12.1933 b 13.4025 c 14.8920 β 103.090°			3.28 eV	[73]
L1 = 1,8-dimethyl-1,3,6,8,10,13-hexaazacyclotetradecane	[Ni(L1)][Ni(L1)Sn2S6]n·2H2O		monoclinic	P21/c	a 11.6481 b 14.4268 c 10.8450 β 95.449°			brown	[74]
L2 = 1,8-diethyl-1,3,6,8,10,13-hexaazacyclotetradecane	[Ni(L2)]2[Sn2S6]·4H2O		triclinic	P1	a 9.1562 b 10.3705 c 12.2897 α 66.761° β 85.350° γ 81.308°				[74]
(μ2-triethylenetetramine)-bis(triethylenetetramine)-di-nickel(ii) tetrachloride dihydrate	[Ni2(trien)2(μ-trien)]Cl4·2H2O		orthorhombic	Pbca	a 13.737 b 13.089 c 18.193				[67]
bis(tris(2,2'-bipyridine)-nickel(ii)) heptakis(μ-selenido)-tri-tin(iv) hexakis(μ-selenido)-selenido-tri-tin(iv) 2,2'-bipyridine monohydrate	[Ni(2,2′-bipy)3]2[Sn3Se7]2·(2,2′-bipy)·H2O		monoclinic	P 21/c	a=26.999 b=13.383 c=24.714 β=103.89°				[58]
	Cu2SnSe4			F3m				thermoelectric	[75]
	(1,4-dabH2)Cu2SnSe4		orthorhombic	P42/n	a=14.956 b=14.956 c=12.017				[57]
	Na6Cu8Sn3Se13		cubic	Fm3c	a =18.4754				[76]
	[Cu2SnSe5][Mn(Hen)2(en)]		monoclinic	P21/c	a 9.640 b 21.04 c 10.611 β 100.72°			1.49 eV	[77]
	[(Mn1.67Zn0.33)(en)6]Sn2Se6								[65]
	K2Cu2Sn2Se6		monoclinic	C2/c	Z=8			black; band gap 1.04 eV	[78]
Copper zinc tin selenide	Cu2ZnSnSe4							black; photovoltaic 11.6% efficient	[29]
catena-[tris(ethane-1,2-diamine)-zinc(ii) (μ-diselenido)-hexakis(μ-selenido)-tri-tin]	[Zn(en)3]Sn3Se6(Se2)		monoclinic	P21/n	a 11.949 b 14.060 c 15.794 β 100.39°				[52]
tris(ethane-1,2-diamine)-zinc(ii) tris[tetraselanato]-tin	[Zn(en)3][Sn(Se4)3]		triclinic	P1	a 10.156 b 12.096 c 12.109, α 89.64° β 75.49° γ 75.87°				[52]
	Zn2(en)2(μ4-SnSe4)		tetragonal	I41/a	a =7.8032 c =31.528				[53]
tetrakis(μ-selenido)-bis(selenido)-bis(N,N-bis(2-aminoethyl)ethane-1,2-diamine)-di-tin(iv)-di-zinc(ii)	{Zn(tren)}2(μ-Sn2Se6)		monoclinic	C2/c	a 12.414 b 9.846 c 23.970° β 102.395°	2861.5		band gap 2.38 eV	[79]
tetrakis(μ-selenido)-bis(selenido)-bis(bis(2-(2-aminoethyl)aminoethyl)amine)-di-tin(iv)-di-zinc(ii)	{Zn(tepa)}2(μ-Sn2Se6)		tetragonal	I41/a	a=26.6205 c =10.0533	7124.3		band gap 2.31 eV	[79]
catena-[bis(dimethylammonium) octakis(μ-selenido)-tri-tin(iv)-zinc(ii)]	[(Me)2NH2]2ZnSn3Se8		monoclinic	C2	a=10.961 b=11.056 c=9.683 β=105.17°				[80]
	(Me4N)2Zn[Sn4Se10]								[81]
DBN=1,5-diazabicyclo[4.3.0]non-5-ene	[DBNH]2[ZnSnSe4]		tetragonal	P42/ncm	a=13.033 c 6.548			band gap 2.42 eV	[62]
	K2ZnSn3Se8		monoclinic	P21	a 7.639 b 12.400 c 18.384 β 98.13°			band gap 2.10 eV	[82]
	Cu2ZnSnSe4								[75]
	[NH4]2Ga4Se8Sn4		monoclinic	P21/c	a 7.582 b 12.501 c 18.377 β 96.43°				[83]
catena-(1-ethylpyridinium hexakis(μ-selenido)-gallium-di-tin hydrate)	H3CCH2NC5H5GaSn2Se6 ∙ 0.25H2O		tetragonal	I41/a	a=26.401 c =10.464			orange	[84]
x~0.25	Na2−xGa2−xSn1+xSe6		monoclinic	C2	a=13.308 b=7.594 c=13.842 β=118.730°	1226.7			[85]
	K3Ga6Sn6Se12		cubic	Pa3	a=13.5555 Z=12	2490.8	4.347	colourless	[86]
	KGaSnSe4		cubic	Pa3	a=13.5555 Z=12	2490.8	4.347	orange	[86]
	[(TEPA)Mn]2+4[Sn4Ga4Zn2Se20]8−		tetragonal	P4b2	a=17.4951 c 13.5849				[87]
	(Et4N)2[Sn6Se10Br6]		monoclinic	P21/n	a = 14.0826 b = 14.1904 c = 24.277 β = 92.809° Z = 4	4845.6			[88]
	Rb2Sn2Se5		monoclinic	C2/c	a=11.555 b=8.478 c=12.030 β=108.60 Z=4	1117	4.78	black; oxygen sensitive	[89]
	Rb4Sn4Se10·1.5H2O			R3	a 15.539 c 21.373				[39]
	Rb2Cu2Sn2Se6		monoclinic	C2/c	Z=8			black; band gap 1.04 eV	[78]
	RbGaSnSe4		cubic	Pa3	a=13.7200	2582.63	4.550	orange	[86]
	Rb2Sn4Se9-H2O		orthorhombic	Pnma	a=13.298 b=12.418 c=12.563				[90]
	Rb2MnSn3Se8		monoclinic	P21	a 7.7864 b 12.6343 c 18.4878 β 95.810°				[91]
	Rb2MnSnSe4		monoclinic	P21/n	a=8.6015 b=10.956 c=10.675 β=90°				[92]
	Rb4Cu8Sn3S12		cubic	Fm3c	a=18.0851				[93]
	(H3O)RbCu6Sn2S8		tetragonal	I4/m	a=14.8834 c=7.6466				[93]
	SrZnSnSe4		orthorhombic	Fdd2	a 21.6984 b 21.873 c 13.1140				[94]
catena-[(μ-hydroxo)-bis(μ-selenido)-(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-selenido-tin-yttrium]	[Y2(tepa)2(μ-OH)2Sn2Se6]		orthorhombic	Pbca	a=12.4190 b=13.6062 c=20.6569 Z=8		2.467	orange	[95]
bis(bis(μ2-hydroxo)-bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-dichloro-di-yttrium) hexakis(μ2-selenido)-tetrakis(selenido)-tetra-tin tetrahydrate	[Y2(tepa)2(μ2-OH)2Cl2]2[Sn4Se10]·4H2O		tetragonal	I41/a	a=28.24 c=10.940		2.025	yellow	[95]
	Ru(bpy)3[Sn4Se9]	1755.02	trigonal	R3c	a=27.240 c=31.01 Z=18	19927	2.632	dark red	[96]
	β-Ag8SnSe6			Pmn21					[4]
	[NH4]3AgSn3Se8		tetragonal	P4/nbm	a=8.2155 c=13.413			thermochromic: gold-darkred-gold	[4][80]
	[NH4]4Ag12Sn7Se22		monoclinic	C2/c	a=52.634 b=6.8175 c=13.5176 β=99.955 Z=4	4959.1	5.270	black; band gap 1.21 eV	[4][97]
	[(Me)2NH2]0.75[Ag1.25SnSe3]		tetragonal	P421m	a=13.998 c=8.685 Z=8	1701.9	4.403	dark red; band gap 1.85 eV	[4][98]
	[CH3NH3]2[H3O]Ag5Sn4Se12·C2H5OH		tetragonal	P421m	a=13.6350 c 9.1491 Z=8			band gap 1.80 eV	[4][80]
catena-[bis(methylammonium) dimethylammonium dodecakis(μ-selenido)-penta-silver-tetra-tin]	[NH3CH3]0.5[NH2(CH3)2]0.25Ag1.25SnSe3		tetragonal	P421m	b =13.7193 c 9.0964		4.019		[99]
	[bmmim]7[AgSn12Se28]		triclinic	P1				band gap 2.2 eV	[4]
heptakis(1,2-dimethyl-3-propyl-1H-imidazol-3-ium) bis(μ3-selenido)-hexacosakis(μ2-selenido)-dodeca-tin-silver	[Mmpmim]7Ag5Sn4Se12∙3H2O		triclinic	P1	a 10.8983 b 13.5554 c 23.091 α 88.904° β 86.700° γ 68.230°				[11]
catena-[N1-(2-azaniumylethyl)ethane-1,2-bis(aminium) dodeca-selenium-tetra-tin-penta-silver trihydrate]	[H3dien][Ag5Sn4Se12]∙3H2O			P421	a =14.2623 b =14.2623 c =9.3022				[100]
	K2Ag2SnSe4			P2/c				band gap 1.8 eV	[4]
	K2Ag2Sn2Se6			P4/mmc					[4]
	K3AgSn3Se8			P4/nbm				band gap 1.8 eV	[4]
	[Mn(NH3)6][Ag4Mn4Sn3Se13]		orthorhombic	F43c	a 19.1263Å b 19.1263Å c 19.1263				[101]
catena-(2-aminoethylammonium bis(μ4-sulfido)-bis(μ3-sulfido)-tin-di-copper-silver)	[enH][Cu2AgSnS4]		orthorhombic	Pnma	a=19.726 b=7.8544 c=6.5083 Z=4	1008.35	3.577	red	[102]
	[Zn(NH3)6][Ag4Zn4Sn3Se13]		orthorhombic	F43c	a=18.9679 b=18.9679 c=18.9679				[101]
	(1,4-dabH2)Cu1.72Ag0.28SnSe4		tetragonal	P42/n	a=14.990 c=12.059			band gap 2.43 eV	[103]
	Rb3AgSn3Se8			P4/nbm				band gap 1.8 eV	[4]
	Li6.4Cd4.8Sn4Se16		orthorhombic	Pna21	a=14.400 b=8.399 c=6.787			band gap 1.95 eV	[104]
tetrakis(2,3,4,6,7,8-Hexahydro-1H-pyrrolo[1,2-a]pyrimidin-5-ium) bis(μ3-diselenido)-undecakis(μ2-selenido)-tri-cadmium-tetra-tin	[DBNH]4[Cd3Sn4Se11(Se2)2]		monoclinic	C2/c	a=22.236 b=12.623 c=21.756 β=109.91°				[105]
	Cd(tren)SnSe3		triclinic	P1	a=7.752 b=8.128 c=12.467, α=97.299° β=103.639° γ=107.325° Z=2	712.1	2.865		[106]
	K2CdSnSe4	625.16	tetragonal	I42m	a=8.084 c=6.920	452.24		photocatalyst	[107]
	Cu2CdSnSe4								[75]
catena-(1-ethylpyridinium hexakis(μ-selenido)-indium-di-tin hydrate)	CH3CH2NC5H5InSn2Se6 ∙ 0.25H2O		tetragonal	I41/a	a=26.946 c =10.283			orange	[84]
	[NH4]2[In2Sn2Se8]		tetragonal	I4/mcm	a=b 8.3731 c 6.719
catena-[tris(1,10-phenanthroline)-cobalt octakis(μ-selenido)-di-indium-di-tin cyclohexylamine solvate tetrahydrate]	Co(phen)3In2Sn2Se8 ∙ C6H11NH2 ∙ 4H2O		monoclinic	P21/n	a=15.610 b=24.238 c=15.828 β=107.04° Z=4	5726	2.169	orange	[108]
tris(1,10-phenanthroline)-nickel octakis(μ-selenido)-di-indium-di-tin cyclohexylamine solvate tetrahydrate	Ni(phen)3In2Sn2Se8 ∙ C6H11NH2		monoclinic	P21/n	a=15.574 b=24.083 c=15.804 β=107.11° Z=4	5665	2.192	orange	[108]
	RbInSnSe4		cubic	Pa3	a=13.9728 Z=12	2728.04	4.637	red; air sensitive	[109]
	RbInSnSe4		monoclinic	P21/c	a= 7.8104 b= 12.6533 c= 18.7062 β= 96.297	1837.52	4.589	orange	[109]
	Cs2Sn2Se5 . H2O		orthorhombic	Ama2	a =12.05 b =12.405 c =9.426				[7]
	Cs2Sn2Se5
	Cs2Sn2Se6		triclinic	P1	a =7.129 b =7.285 c =7.965, α =95.8° β =115.38° γ =108.46°				[90]
	Cs2Sn3Se7		monoclinic	C2/c	a = 23.214, b = 13.679, c =14,657, β= 111.92°, Z = 8,	4317		red; SnSe5 trigonal bipyramids connected in sheets	[4][27]
	Cs4Sn2Se6							yellow; tetrahedral edge-shared pairs	[27]
	Cs4Sn4Se10·3.2H2O		triclinic	P1	a=7.235 b=9.468 c=11.235 α=68.77° β=83.25° γ=84.53°				[39]
	Cs2Sn4Se9-H2O		orthorhombic	Pnma	a =13.514 b =12.54 c =12.679				[90]
(4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo(8.8.8)hexacosane)-potassium tris(μ3-selenido)-tris(μ2-selenido)-bis(1,2-ethylenediamine-N)-(4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo(8.8.8)hexacosane)-di-cesium-potassium-di-tin(iv)	[K-(2,2,2-crypt)]2Cs2Sn2Se6·2en		triclinic	P1	a=10.0019 b=13.8929 c=24.478 α=100.204° β=95.701° γ=90.147°				[43]
	Cs[Cr(en)2SnSe4]	739.67	monoclinic	P21/n	a=7.6800 b=13.1483 c=15.7069 β=91.176° Z=4	1585.7	3.098	black	[110]
	Cs2MnSnSe4		orthorhombic	Fddd	a=6.4075 b=14.416 c=24.820				[92]
	Cs2MgSn3Se8		orthorhombic	P212121	a 7.9055 b 12.7661 c 18.474				[111]
	Cs2MnSn3Se8		orthorhombic	P212121	a 7.8798 b 12.7040 c 18.4556				[91]
	Mn4Cs10Se17Sn4 ∙ 15.5H2O		triclinic	P1	a 13.717 b 15.502 c 18.481 α 77.02° β 74.35° γ 69.71° Z=2	3512	3.418	red	[56]
	Zn4Cs10Se17Sn4 ∙ 17H2O		triclinic	P1	a 13.537 b 15.256 c 18.41, α 76.98° β 73.78° γ 69.57° Z=2	3386	3.577	yellow	[56]
	Cs2ZnSn3Se8		orthorhombic	P212121	a 7.8146 b 12.6534 c 18.3747				[111]
	CsGaSnSe4		orthorhombic	Pmcn	a 7.6785Å b 12.655Å c 18.278				[85]
	Cd4Cs10Se17Sn4 ∙ 17H2O		triclinic	P1	a 17.8678 b 17.7949 c 23.5518 α 98.682° β 105.75° γ 90.307° Z=4	7116	3.617	yellow	[56]
	Cs2CdSn3Se8		orthorhombic	P212121	a 7.9335 b 12.7336 c 18.5387				[111]
	CsInSnSe4		cubic	Pa3	a=14.1932 Z=12	2959.2	4.755	red; air sensitive	[109]
	Ba2SnSe4	709.21	monoclinic	P21/c	a 8.582 b 9.255 c 12.460 β 114.28° Z=4	902.2	5.221	orange	[112]
	α-Ba2SnSe5		orthorhombic	P212121				dark brown	[113]
	β-Ba2SnSe5		monoclinic	P21/c	a = 9.3949 b = 8.8656 c = 12.5745 β = 113.299° Z = 4	961.9		high temperature; red	[113]
	m-Ba2SnSe5		monoclinic	P121/c1	a = 21.17189 b = 9.0915 c = 24.7141 β = 125.621°				[114]
	Ba6Sn6Se13		orthorhombic	P212121	a 9.2998 b 12.384 c 26.896 Z=4	3097.8	5.495	black; 1.52 eV	[115]
	Li2Ba7Sn4Se16		cubic	I43d	a=15.1628 Z=4	3486.1	5.170 ?	red	[116]
	Na2Ba7Sn4Se16		cubic	I43d	a=14.807 Z=4	3246	4.082	red	[116]
	BaZnSnSe4		orthorhombic	Fdd2	a 22.2402 b 22.7047 c 13.1972	6664.0	5.081	red; band gap 1.95 eV	[117]
	BaGa2SnSe6		trigonal	R3	a = 10.145 c = 9.249 Z = 3	824.4	5.253	red NLO 5.2 × AgGaS2 at 2.09 μm birefringence 0.1649 at 1.064 μm	[118]
	Ba4Ga4SnSe12							band gap 2.14	[119]
	BaAg2SnSe4		orthorhombic	I222	a=7.10 b=7.47 c=8.30			band gap 0.2 eV	[4][120]
	BaCdSnSe4	684.27	orthorhombic	Fdd2	a 22.38 b 22.71 c 13.588 Z=32	6907	5.265	orange	[112]
catena-(hexakis(μ2-selenido)-(N-(2-(amino)ethyl)-N'-(2-((2-(amino)ethyl)amino)ethyl)ethane-1,2-diaminato)-di-tin-lanthanum hemihydrate)	(H3O)[La(tepa)(μ-1κ2:2κ2-Sn2Se6)]		monoclinic	C2/c	a=13.845 b=9.805 c=22.010 β=105.949°				[121]
tetrakis(μ-selenido)-bis(3,6,9,12-tetraazatetradecane-1,14-diamine)-nitrato-chloro-di-lanthanum(iii)-tin	{La(peha)(Cl)}{La(peha)(NO3)}(μ-1κ2:2κ2-SnSe4)]		triclinic	P1	a 8.411 b 14.760 c 16.244 α 92.57° β 91.95° γ 102.18° Z=2	1967.3	2.15	light yellow	[122]
2,2'-(ethane-1,2-diyldiimino)diethanaminium tetrakis(μ-selenido)-tetrakis(triethylenetetramine )-diselenido-di-tin-di-lanthanum(iii) bis(μ-selenido)-tetraselenido-di-tin monohydrate	[H2trien][{La(trien)2}2(μ-1κ:2κ-Sn2Se6)][Sn2Se6]·H2O		monoclinic	P21/c	a=14.903 b=16.763 c=16.552 β=101.231° Z=2	4056	2.01	orange	[122]
	[{La(dien)2}4(μ4-Sn2Se9)(μ-Sn2Se6)]∞		triclinic	P1	a 10.253 b 13.061 c 15.847 α 80.62° β 73.59° γ 88.60° Z=1	2007.9	2.514	red	[123]
	[La2(en)8(μ-Se2)]Sn2Se		monoclinic	P21/n	a 10.079 b 14.843 c 14.918 β 90.599° Z=2	2231.7	2.422	yellow	[123]
	La3AgSnSe7			P63					[4]
catena-(hexakis(μ2-Selenido)-(tetraethylenepentamine)-cerium-di-tin monohydrate)	(H3O)[Ce(tepa)(μ-1κ2:2κ2-Sn2Se6)]		monoclinic	C2/c	a=13.852 b=9.802 c=22.035 β=105.98°				[124]
tetrakis(μ2-Selenido)-bis(triethylenetetramine)-bis(tris(2-aminoethyl)amine)-diselenido-di-cerium-di-tin bis((2-((2-aminoethyl)amino)ethyl)(2-aminoethyl)ammonium) bis(μ2-selenido)-tetraselenido-di-tin	[Htrien]2[{Ce(trien)(tren)}2(μ-1κ:2κ-Sn2Se6)]		triclinic	P1	a 9.832 b 10.584 c 18.091, α 90.097° β 92.448° γ 94.500°				[124]
	[{Ce(dien)2}4(μ4-Sn2Se9)(μ-Sn2Se6)]∞		triclinic	P1	a 10.2333 b 13.0790 c 15.7663, α 80.422° β 73.738° γ 88.376° Z=1	1997.1	2.532	orange	[125]
	[{Ce(en)4}2(μ-Se2)]Sn2Se6		monoclinic	P21/n	a 10.094 b 16.616 c 13.397 β 101.878° Z=2	2198.9	2.462	light yellow	[125]
	BaCeSn2Se6		orthorhombic	Pmc21	a=4.1908 b=20.749 c=12.406				[126]
tetrakis(μ2-Selenido)-bis(triethylenetetramine)-bis(tris(2-aminoethyl)amine)-diselenido-di-neodymium-di-tin bis((2-((2-aminoethyl)amino)ethyl)(2-aminoethyl)ammonium) bis(μ2-selenido)-tetraselenido-di-tin	[Htrien]2[{Pr(trien)(tren)}2(μ-1κ:2κ-Sn2Se6)]		triclinic	P1	a 9.842 b 10.578 c 18.080, α 90.065° β 92.532° γ 94.511°				[124]
catena-[(μ-hydroxo)-bis(μ-selenido)-(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-selenido-tin-praseodymium]	[Pr2(tepa)2(μ-OH)2Sn2Se6]		orthorhombic	Pbca	a=12.450 b=13.617 c=21.005 Z=8		2.622	orange	[95]
	[{Pr(en)3}2(μ-OH)2]Sn2Se6		monoclinic	P21/n	a 10.197 b 11.7622 c 15.497 β 98.967° Z=2	1835.9	2.510	yellow	[125]
catena-(bis(μ2-hydroxo)-tetrakis(μ2-selenido)-bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-diselenido-di-neodymium-di-tin)	[{Nd(tepa)(μ-OH)}2(μ-1κ:2κ-Sn2Se6)]		orthorhombic	Pbca	a=12.485 b=13.601 c=20.917				[121]
	[{Nd(en)3}2(μ-OH)2]Sn2Se6		monoclinic	P21/n	a 10.176 b 11.772 c 15.470 β 99.128° Z=2	1829.8	2.531	yellow	[125]
	[{Nd(dien)2}4(μ4-Sn2Se9)(μ-Sn2Se6)]∞		triclinic	P1	a 10.184 b 12.979 c 15.751, α 80.448° β 73.991° γ 88.552° Z=1	1973.1	2.576	red	[125]
ethane-1,2-diaminium tris(N-(2-(amino)ethyl)ethane-1,2-diamine)-samarium 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate)	[Hen][Sm(dien)3]Sn2Se6		triclinic	P1	a=10.044 b=12.803 c=15.811 α=66.32° β=72.86° γ=68.35°				[127]
bis(bis(N,N-bis(2-(amino)ethyl)ethane-1,2-diamine)-chloro-samarium) hemikis(N,N-bis(2-aminoethyl)ethane-1,2-diamine) bis(μ-selenido)-tetrakis(selenido)-di-tin	[Sm(trien)(tren)(Cl)]2Sn2Se6·0.5en		triclinic	P1	a=10.348 b=10.575 c=14.043 α=77.26° β=87.78° γ=61.410°				[127]
bis(N,N'-bis(2-(amino)ethyl)ethane-1,2-diamine)-bis(ethane-1,2-diamine)-bis(μ-hydroxy)di-samarium 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate)	[{Sm(en)(trien)}2(μ-OH)2]Sn2Se6		triclinic	P1	a=10.044 b=12.803 c=15.811, α=66.32° β=72.86° γ=68.35°				[127]
catena-[bis(μ-selenido)-(μ-hydroxo)-(3,6,9-triazaundecan-1,11-diamine)-selenido-samarium-tin hemihydrate]	[{Sm(tepa)(μ-OH)}2 (μ-1κ:2κ-Sn2Se6)]n·nH2O		monoclinic	C2/c	a=22.944 b=11.946 c=18.907 β=125.53° Z=4	4217	2.27	yellow	[122]
	[Hdien][Sm(dien)2(μ-SnSe4)]		monoclinic	P2/c	a 10.185 b 9.471 c 13.808 β 102.256°				[128]
	Eu8(Sn4Se14)(Se3)2		orthorhombic	P21212	a = 11.990 b = 16.425 c = 8.543				[129]
catena-[bis(μ-selenido)-(μ-hydroxo)-(3,6,9-triazaundecan-1,11-diamine)-selenido-europium-tin hemihydrate]	[{Eu(tepa)(μ-OH)}2 (μ-1κ:2κ-Sn2Se6)]n·nH2O		monoclinic	C2/c	a=22.904 b=11.981 c=18.894 β=125.52° Z=4	4220	2.28	yellow	[122]
	[Hdien][Eu(dien)2(μ-SnSe4)]		monoclinic	P2/c	a 10.185 b 9.453 c 13.791 β 102.165°				[128]
	[Eu2(dien)4(μ-OH)2]Sn2Se6		monoclinic	P21/n	a 12.027 b 11.802 c 13.827 β 99.179°				[128]
	[{Eu(en)3}2(μ-OH)2]Sn2Se6		monoclinic	P21/n	a = 10.136 b = 11.771 c = 15.423 β = 99.322° Z = 2	1815.8			[130]
catena-(bis(μ2-hydroxo)-tetrakis(μ2-selenido)-bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-diselenido-di-gadolinium-di-tin monohydrate)	[{Gd(tepa)(μ-OH)}2(μ-1κ:2κ-Sn2Se6)]·H2O		monoclinic	C2/c	a=22.82 b=11.975 c=18.918 β=125.975°				[121]
	[{Gd(en)3}2(μ-OH)2]Sn2Se6		monoclinic	P21/n	a 9.993 b 11.842 c 15.313° β 99.979° Z=2	1784.6	2.643	yellow	[125]
	[Hdien][Gd(dien)2(μ-SnSe4)]		monoclinic	P21/c	a 10.300 b 9.426 c 13.875 β 101.678° Z=2	1319.3	2.271	red	[125]
	[Gd(dap)4]2[Sn2Se6]Cl2		monoclinic	P21/c	a=10.2385 b=14.1276 c=18.068 β =102.745°				[131]
	[{Tb(en)3}2(μ-OH)2]Sn2Se6	1423.62	monoclinic	P21/n	a=10.120 b=11.781 c=15.403 β=99.534° Z=2	1811.1	2.611		[132]
bis(tetrakis(propane-1,2-diamine)-terbium) dichloride bis(μ-selenido)-tetrakis(selenido)-di-tin monohydrate	[Tb(dap)4]2[Sn2Se6]Cl2·H2O		monoclinic	P21/c	a=10.240 b=14.116 c=18.030 β=102.808°				[131]
catena-[bis(μ2-selenido)-(μ2-hydroxo)-(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-selenido-dysprosium-tin]	[Dy2(tepa)2(μ-OH)2Sn2Se6]		orthorhombic	Pbca	a=12.4132 b=13.5901 c=20.6722 Z=8		2.759	orange	[95]
bis(bis(μ2-hydroxo)-bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-dichloro-di-dysprosium) hexakis(μ2-selenido)-tetrakis(selenido)-tetra-tin tetrahydrate	[Dy2(tepa)2(μ2-OH)2Cl2]2[Sn4Se10]·4H2O		tetragonal	I41/a	a=28.2390 c=11.0380		2.229	yellow	[95]
	[Dy2(en)6(μ2-OH)2][Sn2Se6]								[133]
bis(tetrakis(propane-1,2-diamine)-dysprosium) dichloride bis(μ-selenido)-tetrakis(selenido)-di-tin monohydrate	[Dy(dap)4]2[Sn2Se6]Cl2·H2O		monoclinic	P21/c	a=10.214 b=14.118 c=18.000 β=102.798°				[131]
bis(tetrakis(Propane-1,2-diamine)-holmium chloride) 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate)	[Ho(dap)4]2[Sn2Se6]Cl2		monoclinic	P21/c	a=10.1839 b=14.1303 c=18.0100 β=102.571° Z=4	2529.5		yellow	[134]
bis(μ2-Hydroxo)-tetrakis(diethylenetriamine)-di-holmium 1,3,2,4-diselenadistannetane-2,2,4,4-tetrakis(selenolate)	{[Ho(dien)2]2(μ2-OH)2}[Sn2Se6]		monoclinic	P21/n	a=12.0096 b=11.7181 c=13.7717 β=99.138° Z=2	1913.5	2.586	yellow	[134]
bis(bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-dichloro-bis(μ-hydroxo)-di-holmium) tricyclo[3.3.1.13,7]tetrastannaselenane-1,3,5,7-tetrakis(selenolate) tetrahydrate	[Ho2(tepa)2(μ2-OH)2Cl2]2[Sn4Se10]·4H2O		tetragonal	I41/a	a=28.076 c 10.948	8629.6	2.281	yellow; supertetrahedron	[134]
catena-[bis(μ2-selenido)-(μ2-hydroxo)-(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-selenido-erbium-tin]	[Er2(tepa)2(μ-OH)2Sn2Se6]		orthorhombic	Pbca	a=12.418 b=13.605 c=20.636 Z=8		2.778	orange	[95]
bis(bis(μ2-hydroxo)-bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-dichloro-di-erbium) hexakis(μ2-selenido)-tetrakis(selenido)-tetra-tin tetrahydrate	[Er2(tepa)2(μ2-OH)2Cl2]2[Sn4Se10]·4H2O		tetragonal	I41/a	a=28.1622 c=11.0089		2.261	yellow	[95]
	[Er2(en)6(μ2-OH)2][Sn2S6]		monoclinic	P21/n	a 9.951 b 11.860 c 15.278 β 100.239°				[133]
bis(tetrakis(propane-1,2-diamine)-erbium) dichloride bis(μ-selenido)-tetrakis(selenido)-di-tin monohydrate	[Er(dap)4]2[Sn2Se6]Cl2·H2O		monoclinic	P21/c	a=10.204 b=14.176 c=18.041 β=102.530°				[131]
catena-[(μ-hydroxo)-bis(μ-selenido)-(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-selenido-tin-thulium	[Tm2(tepa)2(μ-OH)2Sn2Se6]		orthorhombic	Pbca	a=12.399 b=13.518 c=20.504 Z=8		2.820	orange	[95]
bis(bis(μ2-hydroxo)-bis(N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)ethane-1,2-diamine)-dichloro-di-thulium) hexakis(μ2-selenido)-tetrakis(selenido)-tetra-tin tetrahydrate	[Tm2(tepa)2(μ2-OH)2Cl2]2[Sn4Se10]·4H2O		tetragonal	I41/a	a=28.2080 c=11.0142		2.258	yellow	[95]
	[Hen]4[Tm(en)4]2[Ag6Sn6S20]·3en		monoclinic	C2/m	a 14.517 b 24.380 c 13.422 β 94.46°				[135]
catena-((μ2-Hydroxo)-bis(μ2-selenido)-selenide-(tetraethylenepentamine)-tin-ytterbium hemihydrate)	[{Yb(tepa)(μ-OH)}2(μ-1κ:2κ-Sn2Se6)]·H2O		monoclinic	C2/c	a=21.255 b=12.835 c=17.633 β=125.41°				[124]
bis(μ2-Hydroxo)-tetrakis(diethylenetriamine)-di-ytterbium bis(μ2-selenido)-tetraselenido-di-tin	[{Yb(dien)2}2(μ-OH)2]Sn2Se6		monoclinic	P21/n	a=12.026 b=11.666 c=13.819 β=98.971° Z=4				[124]
DBU=1,8-diazabicyclo[5.4.0]undec-7-ene catena-(bis(2,3,4,6,7,8,9,10-Octahydropyrimido(1,2-a)azepin-1-ium) bis(μ3-selenido)-pentakis(μ2-selenido)-di-mercury)	[DBUH]2[Hg2Sn2Se6(Se2)]		triclinic	P1	a 10.390 b 12.244 c 13.977 α 86.58° β 79.51° γ 70.14° Z=2	1644.3	3.025	yellow	[136]
catena-(bis(2,3,4,6,7,8,9,10-Octahydro-1H-pyrimido(1,2-a)azepin-5-ium) (μ3-diselenido)-(μ3-selenido)-pentakis(μ2-selenido)-di-mercury-di-tin)	[DBUH]2[Hg2Sn2Se5(Se2)]		monoclinic	P21/c	a=14.7289 b=18.6045 c=13.5200 β=111.571	3445.33	3.040	red	[136]
(tetrakis(2,3,4,6,7,8-Hexahydro-1H-pyrrolo[1,2-a]pyrimidin-5-ium) bis(μ3-diselenido)-undecakis(μ2-selenido)-tri-mercury-tetra-tin	[DBNH]4[Hg3Sn4Se11(Se2)2]		monoclinic	C2/c	a 22.137 b 12.663 c 21.780° β 109.48°				[105]
DBN=1,5-diazabicyclo[4.3.0]non-5-ene	[DBNH]2[HgSnSe4]		tetragonal	P42/ncm	a=12.8605 c 6.85560			band gap 2.46 eV	[62]
	Li4HgSn2Se7		monoclinic	Cc	a 18.286b 7.197 c 10.809 β 93.44°			red	[137]
	Li2HgSnSe4		orthorhombic	Pna21	a=14.458 b=8.378 c=6.8215 Z=4	826.3	5.217	red; SHG 6.0 × AgGaS2	[138]
	Na2HgSn2Se6		tetragonal	I4/mcm	a=7.8571 c=20.214				[139]
	Na2Hg3Sn2Se8	1516.81	tetragonal	P4c2	a=9.3749 c=9.790 Z=2	860.5	5.854	red	[138]
	K2HgSnSe4		tetragonal	I4/mcm	a=8.0531Å c=6.9501				[76]
phen = 1,10-phenanthroline; eta = ethanolamine	[Fe(phen)3]Hg2Sn2Se7·1.5eta·0.25H2O		triclinic	P1	a 13.0238 b 13.6275 c 14.4626 α 81.104° β 88.117° γ 82.840°				[140]
teta = triethylenetetramine	[Ni2(teta)2(μ-teta)]HgSn3Se9		orthorhombic	Pmc21	a 22.731 b 13.2151 c 14.6495				[140]
	SrHgSnSe4		orthorhombic	Fdd2	a 21.9027 b 21.9059 c 13.5010			SHG 5 × AgGaS2	[141]
	Cs2HgSn3Se8		orthorhombic	P212121	a 7.9196 b 12.6657 c 18.5375				[111]
	BaHgSnSe4		orthorhombic	Fdd2	a 22.441 b 22.760 c 13.579			SHG 5 × AgGaS2	[141]
	Tl4Sn2Se6							tetrahedral edge-shared pairs	[27]
	TlGaSnSe4		monoclinic	P21/c	a=7.501 b= 12.175 c= 18.203 β= 97.164 Z=8	1649.4	5.646	red	[86]
	TlGaSnSe4		cubic	Pa3	a=13.4755 Z=12	2447.0	5.770	red	[86]