Tuning Nickel with Lewis Acidic Group 13 Metalloligands for Catalytic Olefin Hydrogenation

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• 作者：Ryan C. Cammarota ; Connie C. Lu
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：October 7, 2015
• 年：2015
• 卷：137
• 期：39
• 页码：12486-12489
• 全文大小：334K
• ISSN：1520-5126

文摘

A series of bimetallic complexes pairing zero-valent nickel with group 13 M(III) ions is reported. Stronger Ni鈫扢(III) dative bonds that render Ni more electron-deficient are seen for larger ions (In > Ga > Al). The larger Ga and In ions stabilize rare, nonclassical Ni鈥揌₂ adducts that catalyze olefin hydrogenation. In contrast, neither the Ni鈥揂l complex nor a single nickel center enables H₂ binding or olefin hydrogenation. By comparison of the structures, redox properties, and catalytic activities of the Ni鈥揗 series, the electronic and steric effects of the supporting metal ion are elucidated.