61324-11-6Relevant academic research and scientific papers
Nickel complexes incorporating pyrazole-based ligands for ethylene dimerization to 1-butylene
Wang, Tao,Dong, Bo,Chen, Yan-Hui,Mao, Guo-Liang,Jiang, Tao
, p. 388 - 392 (2015)
In this study we synthesized and characterized bis(3,5-dimethylpyrazolyl)dimethylsilane (L1) and bis(3,5-dimethylpyrazolyl)phenylphosphine (L2) and then prepared bidentate (NN) nickel complexes by reacting L1 or L2 with NiBr2(DME). In combination with methylaluminoxane, diethylchloroaluminum or ethyldichloroaluminum (EADC) as co-catalyst, L1/Ni and L2/Ni complexes exhibited moderate catalytic activities (240-1310 kg/molNi h) and high selectivities (up to 93.2%) for ethylene dimerization toward 1-butylene. The catalytic performance was substantially affected by the co-catalyst type and ligand environment, especially the bridge atom.
