Steric Effects in Heteroboranes.  Part 7.  The Syntheis and Characterisation of Arene-Ruthenium Complexes of C-substituted Carbaboranes.  Molecular Structures of 1-Ph-3-(mes)-3,1,2-closo-RuC2B9H10 and 1-Ph-2-Me-3-(p-cym)-3,1,2-closo-RuC2B9H9, the Latter Showing an Incipient Deformation

Jill Cowie, Bruce D. Reid, Jude M. S. Watmough, Alan J. Welch

Research output: Contribution to journalArticle

Abstract

Title full: Steric effects in heteroboranes. Part 71 1 For Part 6, see Ref. [1]. The synthesis and characterisation of arene-ruthenium complexes of C-substituted carbaboranes. Molecular structures of 1-Ph-3-(mes)-3,1,2-closo-RuC2B9H10 (mes = C6H3-1,3,5) and 1-Ph-2-Me-3-(p-cym)-3,1,2-closo-RuC2B9H9 (p-cym = C6H4Me-1-iPr-4), the latter showing an incipient deformation. The synthesis and characterization of Tl2[7-Ph-7,8-nido-C2B9H10], 3-(p-cym)-3,1,2-closo-RuC2B9H10 (1), 1-Ph-3-(mes)-3,1,2-closo-RuC2B9H10 (2), 1-Ph-3-(P-cym)-3,1,2-closo-RuC2B9H10 (3) and 1-Ph-2-Me-3-(p-cym)-3,1,2-closo-RuC2B9H9 (4) are reported. The ruthenium-containing species are obtained from the reactions between the appropriate [(arene)RuCl2]2 and either Tl2[7,8-nido-C2B9H11], Tl2[7-Ph-7,8-nido-C2B9H10] or Tl2[7-Ph-8-Me-7,8-nido-C2B9HP9 ]. Crystallographic studies on 2 and 4 reveal that whereas the former contains an essentially undistorted {RuC2B9} framework, there is some indication that in the latter, a polyhedral deformation from closo towards pseudocloso has just begun. This idea gains support from comparison of the 11B NMR shifts for 1, 3 and 4 with those for reference carbaboranes.

Original languageEnglish
Pages (from-to)283-293
Number of pages11
JournalJournal of Organometallic Chemistry
Volume481
Issue number2
DOIs
Publication statusPublished - 15 Nov 1994

Keywords

  • Arene complexes
  • Carbaboranes
  • Crystal structure
  • Heteroboranes
  • Ruthenium

ASJC Scopus subject areas

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

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