Rubidium telluride
| Identifiers | |
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3D model (JSmol) |
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| ECHA InfoCard | 100.032.159 |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| Rb2Te | |
| Molar mass | 298.54 g/mol |
| Appearance | yellow-green powder |
| Melting point | 775 °C (1,427 °F; 1,048 K) |
| Related compounds | |
Other anions |
Rubidium oxide Rubidium sulfide Rubidium selenide Rubidium polonide |
Other cations |
Lithium telluride Sodium telluride Potassium telluride Caesium telluride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Rubidium telluride is the inorganic compound with the formula Rb2Te. It is a yellow-green powder that melts at either 775 °C or 880 °C (two different values have been reported). It is an obscure material of minor academic interest.[1]
Structure
[edit]The compound has several polymorphs. At room temperature, ω-Rb2Te is a metastable antifluorite type structure, and transforms to α-Rb2Te upon heating, which is a PbCl2 type structure.[2]
Preparation
[edit]Like other alkali metal chalcogenides, Rb2Te is prepared from the elements in liquid ammonia.[3]
Uses
[edit]The National Bureau of Standards (NBS) VUV radiometric detector program used magnesium fluoride windowed photodiodes with rubidium telluride photocathodes as radiometric transfer standards.[4]
Rubidium telluride cathodes have been used in solar-blind photomultiplier tubes for aviation applications such as remote optical atmospheric pressure and temperature sensors.[5]
References
[edit]- ↑ Stöwe, K.; Appel, S. (2002). "Polymorphic Forms of Rubidium Telluride Rb2Te". Angewandte Chemie International Edition. 41 (15): 2725–30. doi:10.1002/1521-3773(20020802)41:15<2725::AID-ANIE2725>3.0.CO;2-G. PMID 12203467.
- ↑ Alay-e-Abbas, S.M.; Shaukat, A. (2011). "First principles study of structural, electronic and optical properties of polymorphic forms of Rb2Te". Solid State Sciences. 13 (5). Elsevier BV: 1052–1059. doi:10.1016/j.solidstatesciences.2011.01.021. ISSN 1293-2558.
- ↑ Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1.
- ↑ Saloman, E. B. (1980-05-15). "The use of synchrotron radiation for detector calibrations". Nuclear Instruments and Methods. 172 (1): 79–87. doi:10.1016/0029-554X(80)90613-8. ISSN 0029-554X.
- ↑ Abbiss, John B. "An Optical Ultraviolet Sensor for Remote Measurement of Atmospheric Pressure and Temperature" (PDF). pp. 32–33.
External links
[edit]- Sangster, J.; Pelton, A. D. (1997). "The Rb-Te (rubidium-tellurium) system". Journal of Phase Equilibria. 18 (4): 394. doi:10.1007/s11669-997-0068-9.
- "Rubidium compounds: dirubidium telluride". WebElements: the periodic table on the web. WebElements. Retrieved 17 November 2011.