Arene-metal complexes: Preparation and reactions of h6-arene-Cr(CO)2(diphos) and analogs

M. F. Semmelhack, Walter Seufert, L. Keller

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Abstract

Reaction of 1,2-bis(triphenylphosphino)ethane (diphos) with h6-arenetricarbonylchromium(0) complexes results in replacement of one CO by diphos to give h6-arene(diphos)dicarbonylchromium(0) (e.g., complex 4) and μ-diphosbis(h6-arene)tetracarbonyldichromium(0). Comparison of rate of arene exchange for h6-benzenetricarbonylchromium, h6-benzene(triphenylphosphine)dicarbonylchromium, and complex 4 showed that: (1) replacement of CO by a phosphine retards arene exchange and (2) the effect of diphos in stabilizing an h4-benzene ligand in complex 4 is not sufficient to allow rapid arene exchange. Nucleophilic substitution for hydrogen was observed for the first time in a phosphine-substituted arene-chromium complex.

Original languageEnglish (US)
Pages (from-to)183-190
Number of pages8
JournalJournal of Organometallic Chemistry
Volume226
Issue number2
DOIs
StatePublished - Feb 22 1982

All Science Journal Classification (ASJC) codes

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

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