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| Antimony triiodide | |
|---|---|
| Molecular formula | SbI3 |
| Identifiers | |
| CAS number | 7790-44-5 |
| Properties | |
| Molar mass | 502.473 g/mol |
| Appearance | Red crystals |
| Density | 4.92 g/cm3, solid |
| Melting point |
171 °C |
| Boiling point |
401 °C |
| Magnetic susceptibility | -0.0001472 cm3/mol |
| Structure | |
| Crystal structure | Rhombohedral |
| Hazards | |
| EU classification | not listed |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references |
|
Antimony triiodide is the chemical compound with the formula SbI3. This ruby-red solid is the only characterized "binary" iodide of antimony, i.e. the sole compound isolated with the formula SbxIy. 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.1 For the related compound BiI3, all six Bi---I distances are equal.2
SbI3 has been used as a dopant in the preparation of thermoelectric materials.3
References
- ^ 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:.
- ^ 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 "CsBi4Te6: A High-Performance Thermoelectric Material for Low-Temperature Applications" Science 2000, volume 287, pp 1024-27. doi: 10.1126/science.287.5455.1024
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- This page was last modified on 29 May 2008, at 14:28.
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