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An X-ray crystal and electronic structural investigation of the interstitial phosphide cluster [Os6(CO)18PCl]

  • Stephen B. Colbran
  • , Catherine E. Housecroft
  • , Brian F.G. Johnson
  • , Jack Lewis
  • , Steven M. Owen
  • , Paul R. Raithby
  • University of Cambridge

Research output: Contribution to journalArticlepeer-review

Abstract

The molecular structure of [Os6(CO)18PCl] is presented. The phosphorus atom is interstitially sited within a distorted trigonal prismatic array of osmium atoms. The chlorine atom bridges one edge of a triangular face of the Os6cage. A comparison is made between the structures Of [Os6(CO)18PCl] and its parent compound, [OS6(CO)18P]-. By using the model compounds [Ru6(CO)18P]- and Ru6(CO)18PCl, the Fenske-Hall quantum chemical technique is used to investigate the mode of bonding of the phosphorus atom in [Os6(CO)18P]-. In Ru6(CO)18PCl, the interaction of the tangential orbital of the chlorine atom with the ruthenium-ruthenium antibonding LUMO of [Ru6(CO)18P]- is the primary interfragment interaction; this results in Ru6(CO)18PCl, and by analogy [Os6(CO)18PCl], being a 92 electron cluster in contrast to [Os6(CO)18P] - which is a 90 electron cluster.

Original languageEnglish
Pages (from-to)1759-1765
Number of pages7
JournalPolyhedron
Volume7
Issue number18
DOIs
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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