The activation of C-H bonds in terminal olefins by cyclopentadienylnickel species
作者:S. Pasynkiewicz、W. Buchowicz、A. Pietrzykowski、T. Głowiak
DOI:10.1016/s0022-328x(96)06777-0
日期:1997.5
The alkylidynetrinickel clusters (NiCp)(3)C(CH2)(8)CH3 1, (NiCp)(3)CCH3 2 and tetrakis(eta(5)-cyclopentadienyl)dihydrido (NiCp)(4)H-2 3 were isolated from the reaction mixture of nickelocene with phenyllithium in the presence of 1-decene. (NiCp)(3)C(CH2)(4)CH3 and the clusters 2 and 3 were obtained in reaction with 1-hexene. In the presence of 2,4,4-trimethyl-1-pentene, cluster 3 was obtained as the main product of the reaction.In the reaction with 1-decene, organic products (olefins, biphenyl, o-terphenyl, quartephenyl) were identified by GC/MS analyses. The structure of 3 has been determined by X-ray diffraction and characterized by H-1 and C-13 NMR, MS and LR. On the basis of organonickel and organic products formed, the mechanism of the sp(2)-hybridized C-H bond activation by cyclopentadienylnickel species has been discussed. (C) 1997 Elsevier Science S.A.