Hydrogen diselenide

Chemical compound From Wikipedia, the free encyclopedia

Hydrogen diselenide is an inorganic selenium compound with a chemical formula H2Se2 or (SeH)2.[1][2] At room temperature, hydrogen diselenide dissociates easily to hydrogen selenide (H2Se) and elemental selenium, and is therefore not stable. When an aluminum-reduced hydrochloric acid solution of selenium dioxide is reacted with lead acetate, the resulting black precipitate contains lead diselenide (PbSe2)，this proves that hydrogen diselenide exists in the gas mixture.[3]However, hydrogen diselenide can be stable in some solutions.[3]

Quick facts Names, Identifiers ...
Hydrogen diselenide
Hydrogen diselenide’s ball and stick model
Hydrogen diselenide’s ball and stick model
  Selenium, Se
  Hydrogen, H
Hydrogen diselenide’s space filling model
Hydrogen diselenide’s space filling model
Names
IUPAC name
Dihydrogen diselenide
Other names
Diselane
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
558110
UNII
  • InChI=1S/H2S2/c1-2/h1-2H checkY
    Key: BWGNESOTFCXPMA-UHFFFAOYSA-N checkY
  • InChI=1S/H2Se2/c1-2/h1-2H
    Key: AVJWYAUVPWRPJX-UHFFFAOYSA-N
  • [SeH][SeH]
Properties
H2Se2
Molar mass 159.958 g·mol−1
Appearance oily liquid
Odor Highly offensive, rotten eggs
Hazards
Flash point Flammable
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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References

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