Coordination of a Diphosphine鈥揔etone Ligand to Ni(0), Ni(I), and Ni(II): Reduction-Induced Coordination

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• 作者：Bartholomeus W. H. Saes ; Dide G. A. Verhoeven ; Martin Lutz ; Robertus J. M. Klein Gebbink ; Marc-Etienne Moret
• 刊名：Organometallics
• 出版年：2015
• 出版时间：June 22, 2015
• 年：2015
• 卷：34
• 期：12
• 页码：2710-2713
• 全文大小：250K
• ISSN：1520-6041

文摘

The coordination chemistry of the diphosphine鈥搆etone ligand 2,2鈥?bis(diphenylphosphino)benzophenone (^Phdpbp) with nickel is reported. The ketone moiety does not bind to Ni(II) in the complex (^Phdpbp)NiCl₂, whereas reduction to Ni(I) or Ni(0) induces 畏²(C,O) coordination of the ketone to form the pseudotetrahedral complexes (^Phdpbp)NiCl and (^Phdpbp)Ni(PPh₃). DFT calculations indicate that the metal鈥搆etone bond is dominated by 蟺 back-donation; hence, ^Phdpbp functions as a hemilabile acceptor ligand in this series of complexes.