Photochechemistry of transition-metal polyhydrides: dimerization of OsH4 (PMe2Ph)3 following photodissociation of dihydrogen

Mark A. Green, John C. Huffman, Kenneth G. Caulton

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26 Scopus citations


UV (254 nm) photolysis of OsH4P3 (P PMe2Ph) proceeds, by photodissociation of H2, to give the transient OsH2P3. This species exchanges deuterium with C6D6, reacts with phosphine to give cis-H2 OsP4, and with OsHxP3 to give us Os2H2(μ-H)2P6, whose structure was determined by X-ray diffraction. This OsOs dimer participates in a unique reversible (25°C) phosphin dissociation equilibrium to produce Os2H4P5, containing an OsOs bond. A structural analog of this dimer was produced by acidolysis of Os2H4P6 to give Os2H3P6+, which X-ray diffraction reveals to have a P3Os(μ-H)3OsP3+ structure.

Original languageEnglish (US)
Pages (from-to)C78-C82
JournalJournal of Organometallic Chemistry
Issue number4
StatePublished - Feb 22 1983

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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