Titanium(IV) phosphinoamide as a unique bidentate ligand for late transition metals II: Ti{single bond}Ru heterobimetallics bearing a bridging chlorine atom

Yusuke Sunada, Takashi Sue, Taisuke Matsumoto, Hideo Nagashima

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Treatment of a titanium phosphinoamide, (Ph2PNtBu)2TiCl2 (1), with [Cp*RuCl]4 in THF at room temperature afforded a Ti{single bond}Ru heterobimetallic complex, of which crystallographic study showed the molecular structure to be a six-membered dimetallacyclohexane, Cp*Ru(μ-Cl)(Ph2PNtBu)2Ti{double bond, long}O (3). A boat conformation of the dimetallacycle leads to effective linking of the two metal centers by two phosphinoamide ligands, and bridging of a chlorine atom over the Ti{single bond}Ru axis. The Ti{single bond}Ru heterobimetallics were synthesized by the reaction of 1 with Cp*Ru(COD)Cl or Cp*Ru(TMEDA)Cl, whereas no reaction occurred between 1 and Cp*Ru(PCy3)Cl. A primary product of this reaction would be a trichloride, Cp*Ru(μ-Cl)(Ph2PNtBu)2TiCl2 (2). In fact, careful treatment of 1 with [Cp*RuCl]4 afforded 2 as the main product which was detected by NMR and ESI-MS spectra; 2 was converted to 3 in contact with 1 equivalent of water.

Original languageEnglish
Pages (from-to)3176-3182
Number of pages7
JournalJournal of Organometallic Chemistry
Volume691
Issue number14
DOIs
Publication statusPublished - Jul 1 2006

All Science Journal Classification (ASJC) codes

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

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