Antimony triiodide

Antimony triiodide
Identifiers
CAS Number	7790-44-5 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	23032 ;
ECHA InfoCard	100.029.278
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	SbI3
Molar mass	502.473 g/mol
Appearance	Red crystals
Density	4.92 g/cm3, solid
Melting point	171 °C
Boiling point	401 °C
Solubility	benzene
Magnetic susceptibility (χ)	-0.0001472 cm3/mol
Structure
Crystal structure	Rhombohedral, hR24, SpaceGroup = R-3, No. 148
	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.^[2] For the related compound BiI₃, all six Bi—I distances are equal.^[3]

SbI₃ has been used as a dopant in the preparation of thermoelectric materials.^[4]

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

References

^ Ramette, Richard (1958). "Benzene Extraction of Antimony Iodide". Analytical Chemistry. 30 (6): 1158–1159. doi:10.1021/ac60138a601.
^ 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". Physical Review B. 58 (22): 14812–14822. doi:10.1103/PhysRevB.58.14812.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ 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.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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[1] Ramette, Richard (1958). "Benzene Extraction of Antimony Iodide". Analytical Chemistry. 30 (6): 1158–1159. doi:10.1021/ac60138a601.

[2] 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". Physical Review B. 58 (22): 14812–14822. doi:10.1103/PhysRevB.58.14812.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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

[4] 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.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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