Antimonide iodide

Antimonide iodides or iodide antimonides are compounds containing anions composed of iodide (I⁻) and antimonide (Sb³⁻). They can be considered as mixed anion compounds. They are in the category of pnictide halides. Related compounds include the antimonide chlorides, antimonide bromides, phosphide iodides, and arsenide iodides.

formula	system	space group	unit cell Å	volume	density	comment	ref
Ge₃₈Sb₈I₈	cubic	Pm3n	a=10.8892			clathrate; band gap 1.16 eV; thermal conductivity 7 mWcm⁻¹K⁻¹	^[1]
Cd₄Sb₂I₃	cubic	Pa3	a=13.48				^[2]
Sn₃₈Sb₈I₈	cubic	Pm3n	a=12.0447			clathrate; band gap 0.80 eV; thermal conductivity 12mWcm⁻¹K⁻¹	^[1]
La₂SbI₂	rhombohedral		a=4.530 c=32.80				^[3]
Hg₅Sb₂I₆	orthorhombic	Pc2₁n	a=8.108, b=10.702, c=21.295	1847.7	7.217	Dark red	^[4]
(Hg₆Sb₄)(CdI₆)	rhombohedral	R3c	a = 13.3818, α = 90.93°,	2395.3	7.111	black	^[5]
(Hg₆Sb₄)(CdI₆)Hg_0.6	cubic	Pa3	a=13.234	2317.7	7.604	black; band gap 1.23; air stable	^[6]
[Hg₆Sb₄I₃](SnI₃)Hg_0.16	cubic	P2₁3	a=13.285 Z=4				^[7]

References