Rubidium selenide is an inorganic compound composed of selenium and rubidium. It is a selenide with a chemical formula of Rb2Se. Rubidium selenide is used together with caesium selenide in photovoltaic cells.[5]

Rubidium selenide
Rubidium selenide
Rb+: __ Se2-: __
Names
IUPAC name
Rubidium selenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.045.847 Edit this at Wikidata
EC Number
  • 250-447-2
  • InChI=1S/2Rb.Se/q2*+1;-2
    Key: FQJOSIUDOWCYLV-UHFFFAOYSA-N
  • [Se-2].[Rb+].[Rb+]
Properties
Rb2Se
Molar mass 249.89
Appearance colourless, highly hygroscopic crystals[1]
Density 2.912 g/cm3[2]
3.16 g/cm3[3]
Melting point 733 °C[2]
hydrolyses[4]
Solubility in other solvents soluble in ethanol and glycerin
Structure
cubic: inverse fluorite structure
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
toxic
GHS labelling:
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
H301, H331, H373, H410
Related compounds
Other anions
rubidium oxide, rubidium sulfide, rubidium telluride, rubidium polonide
Other cations
lithium selenide, sodium selenide, caesium selenide, francium selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Preparation

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Rubidium selenide can be prepared by reacting mercury selenide and metallic rubidium.[6] The elements can be synthesized in liquid ammonia.[7]

Hydrogen selenide can also be dissolved in an aqueous solution of rubidium hydroxide to eventually form rubidium selenide.[8] This method is similar to the method for preparing rubidium sulfide, because they are both chalcogenide compounds.

RbOH + H2Se → RbHSe + H2O
RbHSe + RbOH → Rb2Se + H2O

Crystal structure

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Rubidium selenide has cubic crystal structure, which belongs to the antifluorite structure, and the space group is   and the lattice parameters are a=801.0 pm, per unit. The unit cell has 4 units.[1]

References

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  1. ^ a b Jean D'Ans, Ellen Lax: Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale, Band 3. 4. Auflage, Springer, 1997, ISBN 978-3-5406-0035-0, S. 692 ([1], p. 692, at Google Books).
  2. ^ a b Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN 978-0-8493-8671-8, S. 336 ([2], p. 336, at Google Books).
  3. ^ Sommer, Helmut; Hoppe, Rudolf (February 1977). "Die Kristallstruktur von Cs2S. mit einer Bemerkung über Cs2Se, Cs2Te, Rb2Se und Rb2Te" [The crystal structure of cesium sulfide and a remark about cesium selenide, cesium telluride, rubidium selenide, and rubidium telluride]. Zeitschrift für anorganische und allgemeine Chemie (in German). 429 (1): 118–130. doi:10.1002/zaac.19774290116.
  4. ^ Rubidium selenide at AlfaAesar, accessed on Dienstag, 29. Juni 2010 (PDF) (JavaScript required).[dead link]
  5. ^ Solid State Technology. Vol. 4. Cowan Publishing Corporation. 1961. p. 34.
  6. ^ Bergmann, Alfred (1937-03-13). "Über die Darstellung und Eigenschaften von Caesium-und Rubidium-Sulfid, Selenid und Tellurid". Zeitschrift für anorganische und allgemeine Chemie. 231 (3): 269–280. doi:10.1002/zaac.19372310306.
  7. ^ Mellor, Joseph William (1963). A Comprehensive Treatise on Inorganic and Theoretical Chemistry. Longmans, Green. p. 2178.
  8. ^ R. Abegg, F. Auerbach: 'Handbuch der anorganischen Chemie'. Verlag S. Hirzel, Bd. 2, 1908. S. 430.Volltext