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Arsenide iodide

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Arsenide iodidesoriodide 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

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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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^ ^a ^b Hadenfeldt, C.; Fester, W. (July 1982). "Reindarstellung und thermische Stabilität von Calcium-phosphid- und -arsenidiodiden: Ca3PI3, Ca3AsI3, Ca2PI und Ca2AsI". Zeitschrift für anorganische und allgemeine Chemie (in German). 490 (1): 25–30. doi:10.1002/zaac.19824900105. ISSN 0044-2313.

^ Hadenfeldt, C.; Herdejürgen, H. (February 1987). "Darstellung und Kristallstruktur der Calciumnitridhalogenide Ca2NCl und Ca2NBr". Zeitschrift für anorganische und allgemeine Chemie (in German). 545 (2): 177–183. doi:10.1002/zaac.19875450220. ISSN 0044-2313.

^ Jayasekera, Buddhimathie; Aitken, Jennifer A.; Heeg, Mary Jane; Brock, Stephanie L. (2003-02-01). "Toward an Arsenic Analogue of Hittorf's Phosphorus: Mixed Pnicogen Chains in Cu 2 P 1.8 As 1.2 I 2". Inorganic Chemistry. 42 (3): 658–660. doi:10.1021/ic0258936. ISSN 0020-1669. PMID 12562174.

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^ Borisov, S. V.; Pervukhina, N. V.; Magarill, S. A. (February 2020). "Crystallographic Analysis and Symmetry Generation for Some Structures with [As2] and [Hgn] (n = 2, 3) Cluster Groups". Journal of Structural Chemistry. 61 (2): 259–266. doi:10.1134/S0022476620020109. ISSN 0022-4766. S2CID 220540955.

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^ Olenev, Andrei V.; Baranov, Alexei I.; Shevelkov, Andrei V.; Popovkin, Boris A. (2000). "[Hg7As4I3](SnI3): Trapping the SnI31– Anion in the Cavities of the Unprecedented Mercury-Arsenic-Iodine Network". European Journal of Inorganic Chemistry. 2000 (2): 265–270. doi:10.1002/(SICI)1099-0682(200002)2000:2<265::AID-EJIC265>3.0.CO;2-A.