Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones

Way-Zen Lee, Tzu Li Wang, Huan Sheng Tsang, Cheng Yuan Liu, Chien Tien Chen, Ting Shen Kuo

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6 Citations (Scopus)

Abstract

The nuclearity of two previously prepared nickel complexes, [LNiCl(μ-Cl)]2.2CH3OH (1) and L'NiCh (2) (L - bis(l-methylbenzimidazoyl-2-methyl)amine and L' - bis(l-methylbenzimidazoyl-2- methyl)-10-camphorsulfonamide), was found to be temperature-dependent. Mononuclear [LNi(CH3OH)2Cl]Cl.2H20 (3) and dinuclear [L'NiCl(μ-Cl)]2 (4) were obtained as crystals at -20 °C. It is noteworthy that complex 2 can catalyze the conjugate addition of thiophenols to a,ß-enones in high yields; in contrast, the same reaction catalyzed by NiCl2THF or complex 3 was far less effective.

Original languageEnglish
Pages (from-to)652-655
Number of pages4
JournalOrganometallics
Volume28
Issue number2
DOIs
Publication statusPublished - 2009 Jan 26

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ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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