Arsenide iodide

Arsenide iodides or iodide arsenides are compounds containing anions composed of iodide (I⁻) 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 bromides, phosphide iodides, and antimonide iodides.

List

formula	system	space group	unit cell Å	volume	density	comment	ref
Ca2AsI	trigonal	R3m	a=4.397, c = 22.29, Z = 3		3.76	brown	[1][2]
Ca3AsI3	cubic	I4132	a=12.42		3.99	colourless	[1]
Cu2P1.8As1.2I2	monoclinic	P21/c	a = 15.477, b = 13.200, c = 15.421, β = 115.406°, Z = 16			Cu exchangeable with Ag; band gap 1.2 eV	[3]
Ge38As8I8	cubic	P43m	a=10.611			metallic; water and air stable	[4]
Ag2P1.8As1.2I2	monoclinic	P21/c	a = 15.84, b = 13.68, c = 15.58 and β = 117.63° Z=16				[5]
Sn24As19.3I8	cubic		a=22.179 Z=8			black	[6]
Sn20.5□3.5As22I8	cubic		a=22.1837			low thermal conductivity	[7]
Sn24AsxP19.3−xI8 x=0-16	cubic	Pm3n	a = 10.9358—11.1495				[8]
Sn19.3Cu4.7As22I8	cubic	Pm3n	a = 11.1736 Z = 1	1394.4	6.236	clathrate; Zintl; diamagnetic	[9]
Sn24–x–δInxAs22–yI8	cubic	Pm3n	a = 11.088 (x = 0) to a = 11.343 (x = 10.7)			clathrate	[10]
La2AsI2	trigonal	P3m1	a=4.3795 c=10.910		5.56		[11]
Hg4AsI5	orthorhombic	Cmca	a=11.927 b=12.128 c=19.776 Z=8	2859.0	7.025	red	[12]
Hg4As2I3	cubic	Pa3	a=12.999 Z=8	2196	8.06	black	[13]
HgI2⋅As4S4	monoclinic	P21/c	a=9.433 b=14.986 c=11.624 β=127.72° Z=4	1299	4.509	orange; dec 212 °C	[14]
Hg5AsS2I3	monoclinic	C2/c	a=13.339 b=8.444 c=13.428 β=118.352 Z=4	1331.2	7.599	black; dec 150 °C	[15]
Hg3AsSe4I	hexagonal	P63mc	a = 7.6902, c = 9.968 Z=2			red; air stable	[16]
[Hg7As4](AgI3)2	cubic	Pa	a = 13.138 Z = 4				[17][18]
(Hg2As)2(CdI4)	monoclinic	P21	a=7.945, b=12.934, c=8.094, β=116.898°	741.7			[19]
[Hg7As4I3](SnI3)	cubic	P213	a = 13.110, Z = 4	2253.2	7.617	black	[20]