Arsenide bromide

Arsenide bromides or bromide arsenides are compounds containing anions composed of bromide (Br⁻) and arsenide (As³⁻). They can be considered as mixed anion compounds. They are in the category of pnictidehalides. Related compounds include the arsenide chlorides, arsenide iodides, phosphide bromides, and antimonide bromides.

List

formula	system	space group	unit cell Å	volume	density	comment	ref
(Ca2−x□x)(As1−xBr1+x) Ca2AsBr	cubic		a=6.05		3.47	yellow, or dark brown	[1][2]
Ca3AsBr3	cubic	Pm3	a=5.91		3.48	colourless or yellow	[1][2]
Cu6AsS5Br	cubic	F43m	a=9.8763		4.80		[3][4]
(Ge38As8)+8⋅8 I−	cubic	Pm3n	a=10.625		5.71	semiconductor resistivity 1 Ω cm; band gap 0.9 eV; silvery grey	[5]
I8As21Ge25	cubic	Pm3n	a=10.5963 Z=1	1189.77	6.143	colourless	[6]
Cd2As3Br	monoclinic	C2/c	a = 8.281, b = 9.411, c = 7.993, β = 101.49°, z = 4		5.76	black	[7][8]
Cd4As2Br3	cubic	Pa3	a=12.61		5.51	semiconductor band gap 1.8 eV	[9]
Cd4PAsBr3	cubic	Pa3	a=12.521		5.38		[10][4]
Cd4As2I1.5Br1.5	cubic	Pa3	a=12.83				[11][4]
La3AsBr3	cubic	I4132	a=12.09		5.50		[12]
Pr3AsBr3	cubic	I4132	a=12.02		5.64		[12]
Hg2As3Br	monoclinic	C2/c	a = 8.0914, b = 9.300, c = 8.1084, β = 99.323°, z = 4		7.79	black	[7]
Hg4As2Br3	cubic	Pa3	a=12.610 Z=8	2012.4	5.54 7.90	red; dark grey	[13][14]
Hg19As10Br18	triclinic	P1	a = 11.262, b = 11.352, c = 12.309, α = 105.724, β = 105.788, γ = 109.078°	1314.3		dark brown	[15]
(HgBr2)3(As4S4)2	monoclinic	P21/c	a = 9.593, b = 11.395, c = 13.402, β = 107.27, Z = 2	1399			[16]
Hg3AsS4Br	hexagonal	P63mc	a = 7.430, c = 9.364 Z=2				[17]
(Hg6As4)[TiBr6]Br	cubic	Pa3	a= 1230.9				[18]
[Hg6As4](CrBr6)Br	cubic	Pa	a=12.275			[Hg6As4]4+ framework with 2 kinds of cavity; band gap 1.5 eV	[19]
[Hg6As4](FeBr6)Hg0.6	cubic	Pa	a=12.332			[Hg6As4]4+ framework with 2 kinds of cavity; band gap 1.5 eV	[19]
[Hg6As4](CuBr3)2	monoclinic	I2/a	a = 14.884, b = 9.358, c = 20.413, β=92.88°, Z = 6			dark red	[20]
[Hg11As4](GaBr4)4	monoclinic	C2/m					[21]
Hg3AsSe4Br	hexagonal	P63mc	a = 7.707, c = 9.47 Z=2				[17]
(Hg2Cd2As2Br)Br	orthorhombic	Pmma	a = 8.791, b = 4.701, c = 9.779, Z=2	404.2	7.688	dark red	[22]
(Hg6As4)(CdBr6)	cubic	Pa3	a=12.3738 Z=4	1894.6	7.345	red; air stable; band gap 1.94	[23]
[Hg6As4][InBr6]Br	cubic	Pa3	a=12.3511 Z=4	1884.2		dark red	[24]
[Hg4As2](InBr3.5As0.5)	Hexagonal	P63/mmc	a = 7.7408, c = 12.535, Z=2	650.47			[25]
[Hg6As4Br3](SnBr3)	cubic	P213	a=12.383 Z=4				[26]
[Hg6As4][YbBr6]Br	cubic	Pa3	a=12.362 Z=4	1889.1	7.860	dark red	[27]
Hg9As4Bi2Br12	tetragonal	P43	a=10.865 b=10.865 c=28.357 Z=4	3347.5	6.91	orange	[28]