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Communication

Stoichiometric and Catalytic Reactions of Thermally Stable Nickel(0) NHC Complexes

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Jianguo Wu, John W. Faller, Nilay Hazari*, and Timothy J. Schmeier

Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States

Organometallics, 2012, 31 (3), pp 806–809

DOI: 10.1021/om300045t

Publication Date (Web): January 27, 2012

*E-mail: nilay.hazari@yale.edu.

Section:

Organometallic and Organometalloidal Compounds

Abstract

Although there are many organic reactions that are catalyzed by either Ni⁰ or Pd⁰ complexes, in comparison with the case for Pd⁰ there has been significantly less work studying coordinatively unsaturated Ni⁰ complexes. Here, we develop a simple synthetic route for preparing a number of thermally stable NHC-supported Ni⁰ hexadiene complexes in good yield. We examine the stoichiometric reactivity of one of these species and demonstrate that the coordinated hexadiene moiety is labile and can be replaced with a variety of different ligands, including CO, phosphines, isonitriles, and olefins. In addition, we show that the Ni⁰ hexadiene complexes are relatively rare examples of homogeneous first-row transition-metal catalysts for the hydrogenation of olefins.

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History

Published In Issue February 13, 2012
Article ASAPJanuary 27, 2012
Received: January 19, 2012

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Communication

Stoichiometric and Catalytic Reactions of Thermally Stable Nickel(0) NHC Complexes