Antimony triiodide

Antimony triiodide
Names
	IUPAC name Antimony triiodide, Antimony(III) iodide
	Systematic IUPAC name Triiodostibane
Identifiers
CAS Number	7790-44-5 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	23032 ;
ECHA InfoCard	100.029.278
EC Number	232-205-8;
PubChem CID	24630;
UNII	52ZE5Y9Y82 ;
CompTox Dashboard (EPA)	DTXSID1064875 ;
	InChI InChI=1S/3HI.Sb/h31H;/q;;;+3/p-3 Key: KWQLUUQBTAXYCB-UHFFFAOYSA-K ; InChI=1/3HI.Sb.3H/h31H;;;;/q;;;+3;;;/p-3/r3HI.H3Sb/h31H;1H3/q;;;+3/p-3 Key: JYIUOADDPFDEAV-GODZFDHEAT; InChI=1/3HI.Sb/h31H;/q;;;+3/p-3 Key: KWQLUUQBTAXYCB-DFZHHIFOAA;
	SMILES [SbH3+3].[I-].[I-].[I-]; I[Sb](I)I;
Properties
Chemical formula	I3Sb
Molar mass	502.473 g·mol−1
Appearance	red crystals
Density	4.921 g/cm3
Melting point	170.5 °C (338.9 °F; 443.6 K)
Boiling point	401.6 °C (754.9 °F; 674.8 K)
Solubility in water	soluble, partially hydrolyses
Solubility	soluble in benzene, alcohol, acetone, CS2, HCl, KI, SnCl4, C2H7N; ,HI,alkali metal triiodides insoluble in CHCl3, CCl4[1]
Solubility in diiodomethane	10.15% v/v (12 °C)[2]
Magnetic susceptibility (χ)	-147.0·10−6 cm3/mol
Structure
Crystal structure	Rhombohedral, hR24,
Space group	R-3, No. 148
Dipole moment	1.58 D
Thermochemistry
Heat capacity (C)	81.6 J/mol·K (gas)[1]
Std enthalpy of; formation (ΔfH⦵298)	-100.4 kJ/mol[1]
Hazards
GHS pictograms	[3]
GHS Signal word	Warning
GHS hazard statements	H302, H332, H411[3]
GHS precautionary statements	P273[3]
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.5 mg/m3 (as Sb)[4]
REL (Recommended)	TWA 0.5 mg/m3 (as Sb)[4]
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	verify (what is ?)
	Infobox references

Antimony triiodide is the chemical compound with the formula Sb I₃. This ruby-red solid is the only characterized "binary" iodide of antimony, i.e. the sole compound isolated with the formula Sb_xI_y. It contains antimony in its +3 oxidation state. Like many iodides of the heavier main group elements, its structure depends on the phase. Gaseous SbI₃ is a molecular, pyramidal species as anticipated by VSEPR theory. In the solid state, however, the Sb center is surrounded by an octahedron of six iodide ligands, three of which are closer and three more distant.[5] For the related compound BiI₃, all six Bi—I distances are equal.[6]

Production

It may be formed by the reaction of antimony with elemental iodine, or the reaction of antimony trioxide with hydroiodic acid.

Alternatively, it may be prepared by the interaction of antimony and iodine in boiling benzene or tetrachloroethane.

Uses

SbI₃ has been used as a dopant in the preparation of thermoelectric materials.[7]

References

http://chemister.ru/Database/properties-en.php?dbid=1&id=5180
Seidell, Atherton; Linke, William F. (1952). Solubilities of Inorganic and Organic Compounds. Van Nostrand. Retrieved 18 May 2017.
Sigma-Aldrich Co., Antimony(III) iodide. Retrieved on 2014-05-29.
NIOSH Pocket Guide to Chemical Hazards. "#0036". National Institute for Occupational Safety and Health (NIOSH).
Hsueh, H.C.; Chen, R.K.; Vass, H.; Clark, S.J.; Ackland, G.J.; Poon, W.C.K.; Crain, J. (1998). "Compression mechanisms in quasimolecular XI3 (X = As, Sb, Bi) solids" (PDF). Physical Review B. 58 (22): 14812–14822. doi:10.1103/PhysRevB.58.14812.
Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
D.-Y. Chung; T. Hogan; P. Brazis; M. Rocci-Lane; C. Kannewurf; M. Bastea; C. Uher; M. G. Kanatzidis (2000). "CsBi₄Te₆: A High-Performance Thermoelectric Material for Low-Temperature Applications". Science. 287 (5455): 1024–7. doi:10.1126/science.287.5455.1024. PMID 10669411.

External links

HI																	He
LiI	BeI₂											BI₃	CI₄	NI₃	I₂O₄, I₂O₅, I₄O₉	IF, IF₃, IF₅, IF₇	Ne
NaI	MgI₂											AlI₃	SiI₄	PI₃, P₂I₄	S	ICl, ICl₃	Ar
KI	CaI₂	Sc	TiI₄	VI₃	CrI₃	MnI₂	FeI₂	CoI₂	NiI₂	CuI	ZnI₂	Ga₂I₆	GeI₂, GeI₄	AsI₃	Se	IBr	Kr
RbI	SrI₂	YI₃	ZrI₄	NbI₅	Mo	Tc	Ru	Rh	Pd	AgI	CdI₂	InI₃	SnI₄, SnI₂	SbI₃	TeI₄	I	Xe
CsI	BaI₂		HfI₄	TaI₅	W	Re	Os	Ir	Pt	AuI	Hg₂I₂, HgI₂	TlI	PbI₂	BiI₃	Po	AtI	Rn
Fr	RaI₂		Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Nh	Fl	Mc	Lv	Ts	Og
		↓
		La	Ce	Pr	Nd	Pm	SmI₂	Eu	Gd	TbI₃	Dy	Ho	Er	Tm	Yb	Lu
		Ac	ThI₄	Pa	UI₃, UI₄	Np	Pu	Am	Cm	Bk	Cf	EsI₃	Fm	Md	No	Lr

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[chemister-1] ttp://chemister.ru/Database/properties-en.php?dbid=1&id=5180

[sioc-2] Seidell, Atherton; Linke, William F. (1952). Solubilities of Inorganic and Organic Compounds. Van Nostrand. Retrieved 18 May 2017.

[sigma-3] Sigma-Aldrich Co., Antimony(III) iodide. Retrieved on 2014-05-29.

[PGCH-4] NIOSH Pocket Guide to Chemical Hazards. "#0036". National Institute for Occupational Safety and Health (NIOSH).

[5] Hsueh, H.C.; Chen, R.K.; Vass, H.; Clark, S.J.; Ackland, G.J.; Poon, W.C.K.; Crain, J. (1998). "Compression mechanisms in quasimolecular XI3 (X = As, Sb, Bi) solids" (PDF). Physical Review B. 58 (22): 14812–14822. doi:10.1103/PhysRevB.58.14812.

[6] Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.

[7] D.-Y. Chung; T. Hogan; P. Brazis; M. Rocci-Lane; C. Kannewurf; M. Bastea; C. Uher; M. G. Kanatzidis (2000). "CsBi₄Te₆: A High-Performance Thermoelectric Material for Low-Temperature Applications". Science. 287 (5455): 1024–7. doi:10.1126/science.287.5455.1024. PMID 10669411.