Arsenide iodide

Class of chemical compounds

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]
Cu₂P_1.8As_1.2I₂	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]
Ag₂P_1.8As_1.2I₂	monoclinic	P2₁/c	a = 15.84, b = 13.68, c = 15.58 and β = 117.63° Z=16				^[5]
Sn₂₄As_19.3I₈	cubic		a=22.179 Z=8			black	^[6]
Sn_20.5□_3.5As₂₂I₈	cubic		a=22.1837			low thermal conductivity	^[7]
Sn₂₄As_xP_19.3−xI_{8 x=0-16}	cubic	Pm3n	a = 10.9358—11.1495				^[8]
Sn_19.3Cu_4.7As₂₂I₈	cubic	Pm3n	a = 11.1736 Z = 1	1394.4	6.236	clathrate; Zintl; diamagnetic	^[9]
Sn_24–x–δIn_xAs_22–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]

References

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