The crystal, molecular and electronic structure of[Os3(μ-H)(CO)10(μ-PPh2)]

Brian F.G. Johnson, Jack Lewis, Ebbe Nordlander, Paul R. Raithby, Catherine E. Housecroft

Research output: Contribution to journalArticlepeer-review

Abstract

The crystal and molecular structure of the phosphido-bridged cluster [Os3(μ-H)(CO)10(μ-PPh2)] has been determined. The cluster consists of an isosceles Os3 triangle. One of the Os-Os edges is bridged by the μ-PPh2 moiety as well as the hydride. Steric interaction between the phenyl groups and the carbonyl ligands dictate the orientation of the former. The doubly bridged Os-Os edge is slightly longer than the other two. A Fenske-Hall molecular orbital analysis of the bonding in [Os3(μ-H)(CO)10(μ-PPh2)] and the related clusters [M3(μ-H)(CO)10(μ-PPhH)] (M = Ru, Os) indicates that the observed lengthening of the bridged Os-Os edge may be attributed to an electronic effect. Steric factors influence bond lengths and bond angles in these clusters to a greater extent than electronic factors.

Original languageEnglish
Pages (from-to)345-350
Number of pages6
JournalInorganica Chimica Acta
Volume259
Issue number1-2
DOIs
Publication statusPublished - 30 Jun 1997

Keywords

  • Cluster complexes
  • Crystal structures
  • Electronic structures
  • Hydrido-bridged complexes
  • Osmium complexes
  • Phosphido-bridged complexes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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