Tantalum(V) iodide
Tantalum(V) iodide is the inorganic compound with the formula Ta2I10. Its name comes from the compound's empirical formula, TaI5.[1] It is a diamagnetic, black solid that hydrolyses readily. The compound adopts an edge-shared bioctahedral structure, which means that two TaI5 units are joined by a pair of iodide bridges. There is no bond between the Ta centres.[2] Niobium(V) chloride, niobium(V) bromide, niobium(V) iodide, tantalum(V) chloride, and tantalum(V) bromide all share this structural motif.
 | |
| Names | |
|---|---|
| Other names
Tantalum pentaiodide | |
| Identifiers | |
| |
| Properties | |
| Ta2I10 | |
| Molar mass | 1631 |
| Appearance | black solid |
| Density | 5.8 g/cm3 |
| Melting point | 543 °C (1,009 °F; 816 K) sublimes |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Synthesis and structure
Tantalum pentaiodide forms from the reaction of tantalum pentoxide with aluminium triiodide:[3]
- Ta2O5 + 3.3 AlI3 → 2 TaI5 + 3.3 Al2O3
References
- Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford: Butterworth-Heinemann. ISBN 0-7506-3365-4.
- Müller, U. (1979). "Die Kristallstruktur von Tantalpentajodid und ihre Fehlordnung". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 35 (11): 2502–2509. doi:10.1107/S0567740879009778.
- G. Braurer (1963). "Niobium(V) and Tantalum(V) Bromides". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. 1. NY, NY: Academic Press. p. 1311.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.