The first examples of η5-bonding of a carbaborylphosphine ligand to transition metals. Synthesis and characterisation of 7-{PPh2AuPPh3}-8-Ph-7,8-nido-C2B 9H10, 1-{PPh2AuCl}-2-Ph-3-(p-cymene)-3,1,2-pseudocloso-RuC 2B9H9

M. Anna McWhannell, Georgina M. Rosair, Alan J. Welch, Francesc Teixidor, Clara Viñas

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The closo carbaborylmonophosphine 1-PPh2-2-Ph-1,2-closo-C2B10H10 is deboronated by reaction with ClAuPPh3 in refluxing ethanol to afford the zwitterionic compound 7-{PPh2AuPPh3}-8-Ph-7,8-nido-C2B 9H10, characterised by NMR spectroscopy and X-ray crystallography. Deprotonation of this species using NaH in THF followed by reaction with either [(p-cymene)RuCl2]2 or [(?-C5Me5)RhCl2]2 yields the compounds 1-{PPh2AuCl}-2-Ph-3-(p-cymene)-3,1,2-RuC2B 9H9 and 1-{PPh2AuCl}-2-Ph-3-(?-C5Me 5)-3,1,2-RhC2B9H9, respectively. These latter products, which on the basis of 11B-NMR spectroscopy and (in the first case) a single crystal diffraction analysis, have pseudocloso structures, are the first reported examples of compounds in which a carbaborylphosphine ligand is ?5-bonded to a transition metal.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalJournal of Organometallic Chemistry
Volume573
Issue number1-2
Publication statusPublished - 31 Jan 1999

Keywords

  • Carbaborylphosphine ligand
  • Diffraction
  • NMR spectroscopy

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