Pentafluoroaryl Transfer from Tris(pentafluorophenyl)boron Hydrate to Nickel. Synthesis and X-ray Crystal Structure of (PPh<sub>2</sub>CH<sub>2</sub>C(O)Ph)Ni(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>
作者:Heather A. Kalamarides、Suri Iyer、John Lipian、Larry F. Rhodes、Cynthia Day
DOI:10.1021/om000606w
日期:2000.9.1
chelating ligand, forming the dimer [(PPh2CHC(O)Ph)Ni(C6F5)]2 (5). Compounds 4 and 5 were characterized by NMR and MS techniques. Compound 4 was independently synthesized by the reaction of PPh2CH2C(O)Ph and (η6-toluene)Ni(C6F5)2. The crystal structure of 4 was determined using single-crystal X-ray diffraction methods. Details concerning the synthesis and characterization of 1−3 are also given.
三(五氟苯基)硼三水合物B(C 6 F 5)3 ·3H 2 O(1)与镍二聚体[[PPh 2 CH C(O)Ph)Ni(Ph)] 2(3)的反应(通过从(PPh 2 CH C(O)Ph)Ni(Ph)(PPh 3)(2)中提取膦来合成)产生(PPh 2 CH 2 C(O)Ph)Ni(C 6 F 5)2(4)。在该反应中,发生了许多过程:二聚体3的片段化,两个质子的转移1,并且将两个C 6 F 5基团从硼转移到镍。在溶液中,由于质子从螯合配体转移,4失去了一个作为五氟苯的C 6 F 5配体,从而形成了二聚体[(PPh 2 CH C(O)Ph)Ni(C 6 F 5)] 2(5)。通过NMR和MS技术表征化合物4和5。化合物4是独立地通过的PPH反应,合成2 CH 2 C(O)h和(η 6 -甲苯)的Ni(C 6 ˚F5)2。使用单晶X射线衍射法确定4的晶体结构。有关的合成和表征详情1 - 3也给出。