Tellurium tetrabromide
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| Tellurium tetrabromide | |
|---|---|
| Identifiers | |
| CAS number | [10031-27-3] |
| Properties | |
| Molecular formula | TeBr4 |
| Molar mass | 447.22 g/mol |
| Appearance | yellow-orange crystals |
| Density | 4.3 g/cm³, solid |
| Melting point |
388°C |
| Boiling point |
decomposes @420°C |
| Structure | |
| Crystal structure | monoclinic |
| Hazards | |
| EU classification | not listed |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Tellurium tetrabromide (TeBr4) is an inorganic chemical compound. It has a similar tetrameric structure to TeCl4.[1] It can be made by reacting bromine and tellurium.[2]. In the vapour TeBr4 dissociates[1] :
- TeBr4 → TeBr2 + Br2
It is a conductor when molten, dissociating into the ions TeBr3+ and Br− Solutions in benzene and toluene are non conducting and TeBr4 is present as the tetramer, Te4Br16.[1]. In solvents with donor properties such as acetonitrile, CH3CN ionic complexes are formed which make the solution conducting:
- TeBr4 + 2CH3CN → (CH3CN)2TeBr3+ + Br−
[edit] References
- ^ a b c Inorganic Chemistry,Egon Wiberg, Arnold Frederick Holleman Elsevier 2001 ISBN 0123526515
- ^ Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
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