Novel coordinatively unsaturated bimetallic complexes, [(η5-C5ME5)Ru(μ2- iPrNC(Me)= NiPr)Ru(η5C5Me5)] +: A bridging amidinate ligand perpendicular to the metal-metal axis effectively stabilizes the highly reactive cationic diruthenium species

Hideo Kondo, Kouki Matsubara, Hideo Nagashima

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Abstract

Coordinatively unsaturated diruthenium complexes, [(η5-C5Me5)Ru(μ2-iPrNC(Me)=NiPr)Ru(η5-C5Me5)]+, of which crystallography revealed structures bearing a bridging amidinate ligand perpendicular to the Ru-Ru axis, were synthesized by anion exchange of [(η5-C3Me5(Ru(μ2-iPrNC(Me)=NiPr)Ru(η5-C5Me5)]+Br- by weakly coordinating anions. Variable-temperature NMR showed rapid motion of the bridging amidinate ligand. The coordinatively unsaturated nature of the cationic complexes provides their high reactivity toward a series of two electron donor ligands. Oxidative addition of molecular hydrogen occurred to give [(η5-C5Me5)Ru(μ2-iPrNC(Me)=NiPr)(μ-H)Ru(η5-C5Me5)(H)]+, which was isolated and characterized.

Original languageEnglish
Pages (from-to)534-535
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number4
DOIs
Publication statusPublished - Jan 30 2002

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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