标题：Synthesis and characterization of novel organonickel and organocobalt complexes via carbonechlorine bond activation
作者：Li, Junye ;Li, Xiaoyan ;Sun, Hongjian
作者机构：[Li, Junye ;Li, Xiaoyan ;Sun, Hongjian ] School of Chemistry and Chemical Engineering, Shandong University, 250100 Jinan, China
来源：Journal of Organometallic Chemistry
关键词：CeCl activation; Cobalt; Diimine; Nickel; Ortho-Metalation; Trimethyphosphine
摘要：The ortho-metalated nickel(II) complexes 3, 4, 7 and 8 were obtained by the reaction of ortho-halogeno aromatic bis-Schiff bases 1, 2, 5 and 6 with the stoichiometric amount of Ni(PM-3)4. The combination of 5 and 6 with two equivalents of Ni(PM-3)4 resulted in oxidative addition of the double CeCl bonds to afford ortho-bis-chelated nickel(II) complexes 9 and 10. The reaction of 6 with Co(PM-3)4 gave rise to dinuclear ortho-metalated cobalt(II) complex 12 through CeCl bond activation while the reaction of 5 with Co(PM-3)4 delivered bis-chelated cobalt(I) complex 11 through both CeCl and CeH bond activation. The structures of complexes 3, 4, 8, 9, 11 and 12 were determined by X-ray single crystal diffraction. The catalytic activity of bis-chelated cobalt(I) complex 11 as catalyst for C,C-coupling reaction was explored. © 2013 Elsevier B.V. All rights reserved.