TY - JOUR
T1 - 2-[1-(2,6-Dibenzhydryl-4-methylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridylnickel(II) halides: Synthesis, characterization and ethylene oligomerization behavior
AU - Lai, Jingjuan
AU - Hou, Xiaohua
AU - Liu, Yongwen
AU - Redshaw, Carl
AU - Sun, Wen-Hua
PY - 2012/4/1
Y1 - 2012/4/1
N2 - A series of nickel(II) halide complexes ligated by 2-[1-(2,6-dibenzhydryl-4-methyl-phenylimino)ethyl]-6-[1-(arylimino)-ethyl]pyridines was synthesized and characterized by FT–IR spectroscopy and elemental analysis. Single-crystal X-ray crystallographic studies revealed that the nickel halide complexes possess pseudo square-pyramidal geometry at nickel. Following screening with the co-catalysts Et2AlCl, MAO, MMAO and ethylaluminum sesquichloride (EASC, Et3Al2Cl3), EASC was chosen as the co-catalyst of choice, and activities as high as 2.5 × 106 g mol-1 (Ni) h-1 were observed for ethylene oligomerization. The influence of the ligands and of the reaction parameters on the catalytic behavior of the nickel pre-catalysts was investigated.
AB - A series of nickel(II) halide complexes ligated by 2-[1-(2,6-dibenzhydryl-4-methyl-phenylimino)ethyl]-6-[1-(arylimino)-ethyl]pyridines was synthesized and characterized by FT–IR spectroscopy and elemental analysis. Single-crystal X-ray crystallographic studies revealed that the nickel halide complexes possess pseudo square-pyramidal geometry at nickel. Following screening with the co-catalysts Et2AlCl, MAO, MMAO and ethylaluminum sesquichloride (EASC, Et3Al2Cl3), EASC was chosen as the co-catalyst of choice, and activities as high as 2.5 × 106 g mol-1 (Ni) h-1 were observed for ethylene oligomerization. The influence of the ligands and of the reaction parameters on the catalytic behavior of the nickel pre-catalysts was investigated.
U2 - 10.1016/j.jorganchem.2011.12.031
DO - 10.1016/j.jorganchem.2011.12.031
M3 - Article
VL - 702
SP - 52
EP - 58
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
SN - 0022-328X
ER -