Nitride iodide

An iodide nitride is a mixed anion compound containing both iodide (I⁻) and nitride ions (N³⁻). Another name is metalloiodonitrides. They are a subclass of halide nitrides or pnictide halides.^[1] Some different kinds include ionic alkali or alkaline earth salts, small clusters where metal atoms surround a nitrogen atom, layered group 4 element 2-dimensional structures (which could be exfoliated to a monolayer), and transition metal nitrido complexes counter-balanced with iodide ions. There is also a family with rare earth elements and nitrogen and sulfur in a cluster.

Related mixed-anion compounds include halogen variations: nitride fluoride, nitride chloride, and nitride bromide, and pnictogen variations phosphide iodide, arsenide iodide and antimonide iodides.

Production

Nitride iodides may be produced by heating metal nitrides with metal iodides. The ammonolysis process heats a metal iodide with ammonia.^[2] A related method heats a metal or metal hydride with ammonium iodide. The nitrogen source could also be an azide or an amide.^[2]

List

name	formula	formula weight	crystal system	space group	unit cell Å	volume	density	comments	ref
	Li4NCl		hexagonal	R3	a=366.225 c=1977.18 Z=3				[3]
calcium nitride iodide	Ca2NI			P63/mmc	a = 3.8095, c = 14.530, Z = 2				[4]
	α-TiNI		orthorhombic	Pmmn	a=3.941 b=3.51.5 c=8.955 Z=2			black	[5]
	NCr(I)(NiPr2)2								[6]
	Cr(I)(N)(N(C(CD3)2CH3)(C6H3FMe))2								[7]
	Zn2NI		orthorhombic	Pnma	a=6.3590 b=6.2529 c=7.9549			<6 GPa	[8]
strontium nitride iodide	Sr2NI	316.15	trigonal	R3m	a = 4.0049 c = 23.055 Z=3	320.24	4.918	orange	[9]
	α-ZrNI		orthorhombic	Pmmn	a=4.114 b=3.724 c=9.431 Z=2			orange	[10][5]
	β-ZrNI		trigonal	R3m	a=3.718 c=31.381 Z=6			brown	[5]
	[(pcp)Mo(IV)(N)(I)][Na(15-crown-5)] pcp=C6H3(OPiPr2)2								[11]
	Ba2NI
	LiLa4N2I7		orthorhombic	Pnma	a = 13.7417, b = 12.1345, c = 10.7991 Z=4			@100K	[12]
	NaLa4N2I7		orthorhombic	Pna21	a=14.0018 b=10.9315 c=12.1021 Z=4		5.361	colourless air sensitive	[13]
	Ce15N7I24	4245.6	orthorhombic	Pnma	a=12.060 b=32.216 c=16.360 Z=4		5.48	red; air sensitive	[14]
	NaCe4N2I7		orthorhombic	Pna21	a=13.9703 b=10.8932 c=12.0194 Z=4		5.446	red air sensitive	[13]
	NaPr4N2I7		orthorhombic	Pna21	a=13.9412 b=10.8578 c=11.9389 Z=4		5.524	yellowish green air sensitive	[13]
	NaNd4N2I7		orthorhombic	Pna21	a=13.9135 b=10.86 c=11.86 Z=4		5.638	pinkish blue air sensitive	[13]
	(NdI2)3N								[15]
	(NdI2)3N(DME)4								[16]
	NdI(S2N2)(THF)								[17]
	Nd3I5(S2N2)(S2)(THF)10	2088.72	monoclinic	P21	a=12.393 b=43.389 c=12.684 β=90.013 Z=4	6820	2.034	yellow	[15]
	Ln3I5(S2)(S2N2)(THF)4(Phen)3								[18]
	Ln3I5(S2)(S2N2)(THF)3(Py)7								[18]
	(SmI)3N2(THF)								[16]
	ErI(S2N2)(THF)								[17]
	Nd2ErClI4-(S2)(S2N2)(THF)7								[17]
	Nd2ErCl2I3(S2)(S2N2)(THF)7								[17]
	(DyI2)3N								[19]
	Dy3I5(S2)(S2N2)(THF)10								[19]
	Nd2DyI5(S2)(S2N2)(THF)7								[17]
	Nd2DyI5(S3)(S2N2)(THF)9	2034.88	monoclinic	P21/c	a=23.1102 b=12.6551 c=23.8268 β =111.201 Z=4	6496.8	2.080		[20]
	Nd2TbI5(S2)(S2N2)(THF)9		monoclinic	P21/c	a =23.1704 b =12.6340 c =23.8340, β =111.274° Z=4				[21]
	Nd2TmI5(S2)(S2N2)(THF)9		monoclinic	P21/c	a =23.075 b =12.6540 c =23.809, β =111.460° Z=4				[21]
	Nd2YbI5(S3)(S2N2)(THF)9		monoclinic	P21/c	a=23.0959 b=12.6632 c=23.8387 β =111.363 Z=4	6493.0	2.092		[20]
	α-HfNI		orthorhombic	Pmmn	a=4.10.67 b=3.6944 c=9.382 Z=2				[5][10]
	β-HfNI		trigonal	R3m	a=3.689 c=31.329 Z=6			brown	[5]
	ThNI		tetragonal	P4/nmm	a=4.107 c=9.242			orange to golden grey	[5][22]
	UNI		tetragonal	P4/nmm	a=3.99 c=9.20 Z=2				[5][23]