Article

The Elusive Ethenediselone, Se=C=C=Se

Australian Journal of Chemistry, CSIRO Publishing, ISSN 0004-9425

Volume 67, 9, 2014

DOI:10.1071/ch14098, Dimensions: pub.1023005364,

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Organisations

  1. (1) University of Southern Denmark, grid.10825.3e, SDU
  2. (2) National University of Singapore, grid.4280.e
  3. (3) RIKEN Center for Emergent Matter Science, grid.474689.0
  4. (4) University of Mons, grid.8364.9

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Denmark

Japan

Belgium

Singapore

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Description

The neutral ethenediselone, Se=C=C=Se, has been characterised by neutralisation–reionisation mass spectrometry, which implies a minimum lifetime of the order of microseconds. Tetraselenafulvalene 1 and tetramethyltetraselenafulvalene 2 were used as precursor molecules. Flash vacuum thermolysis (FVT) of these compounds with isolation of the products in Ar matrices permitted the identification of ethyne, 2-butyne, CSe2, and selenoketene, H2C=C=Se, but at best traces of Se=C=C=Se survived the FVT/matrix isolation experiment. Multiconfigurational calculations indicate that Se=C=C=Se is a ground state triplet molecule with a very small singlet-triplet gap.

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University of Southern Denmark

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Times Cited: 7

Field Citation Ratio (FCR): 1.05