Sterically induced opening of a closo carbametallaborane: synthesis and characterisation of 1,2-Ph2-3-(η-C5Me5)-3,1,2-pseudocloso-RhC2B9H9

Zoë G. Lewis, Alan J. Welch

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


The structure of the cage in 1,2-Ph2-3-Cp-3,1,2-RhC2B9H9 is distorted from icosahedral by repulsion between the two phenyl rings, forced to lie nearly coplanar by the presence of the Cp ligand. Thus the C(1) ⋯ C(2) distance is 2.51 Å and B(6) approaches to within 2.92 Å of Rh(3). The nature of the distortion, which engenders the description pseudocloso for the RhC2B9 polyhedron, is discussed in relation to 11B NMR chemical shifts and to recent controversy over iso-closo versus hyper-closo descriptors.

Original languageEnglish
Pages (from-to)C45-C50
Number of pages6
JournalJournal of Organometallic Chemistry
Issue number3
Publication statusPublished - 16 Jun 1992

ASJC Scopus subject areas

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


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