Synthesis, structure, and reactivities of the Ru-Co heterobimetallic complex

Hiroyuki Matsuzaka, Koji Ichikawa, Tomohiro Ishioka, Haru Sato, Takashi Okubo, Tomohiko Ishii, Masahiro Yamashita, Mitsuru Kondo, Susumu Kitagawa

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Treatment of Cp*Ru(CO)2Cl (Cp* = η5-C5Me5) with NaCo(CO)4 produces the metal-metal bonded heterobimetallic complex Cp*Ru(CO)22-CO)Co(CO)3 (2b). Substitution of the CO ligands by the Ph2PCH2PPh2 (dppm) leads to the isolation of Cp*Ru(μ2-CO)22-dppm)Co(CO) 2 (3) whereas that by ButNC gives Cp*Ru(CO)(CNBut)(μ2-CO)Co(CO)3 (4). Stoichiometric head-to-tail dimerization of p-tolylacetylene at the bimetallic site of 2b proceeds to form the dinuclear metallacyclopentadiene complex Cp*(CO)Ru{η242-C(Tol)CHC(Tol)CH}Co(CO)2 (5) in which two alkyne molecules are coupled to form a ruthenacyclopentadiene core which coordinates to the Co(CO)2 fragment. On the other hand, catalytic head-to-head coupling of methyl propiolate in the presence of 2b yields (E)-(MeO2C)CH=CH(C=CCO2Me) (6). The molecular structures of 2b, 3, 4, and 5 have been determined by X-ray crystallography.

Original languageEnglish
Pages (from-to)121-129
Number of pages9
JournalJournal of Organometallic Chemistry
Volume596
Issue number1-2
DOIs
Publication statusPublished - 2000 Feb 29

Keywords

  • Alkyne
  • Cobalt
  • Dinuclear metallacyclopentadiene
  • Enyne
  • Heterobimetallic complex
  • Ruthenium

ASJC Scopus subject areas

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

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