Fluorine substitution effect in bis(imino)pyridine cobalt complex in propylene oligomerization
作者:Anna Paula Rodrigues Ehlert、Eduardo Miraglia Carvalho、Daniel Thiele、Cristiano Favero、Isabel Vicente、Katia Bernardo-Gusmão、Rafael Stieler、Roberto Fernando de Souza、Michèle Oberson de Souza
DOI:10.1016/j.cattod.2017.04.005
日期:2017.11
Two bis(imino)pyridinecobaltcomplexes have been synthesized, the dichlorido-(2,6-bis[1-(phenylimine)ethyl]pyridine)cobalt(II) ([Co-NNNPhH]) and the dichlorido-(2,6-bis[1-(2-trifluoromethyl-4-fluorophenylimine)ethyl]pyridine)cobalt(II) ([Co-NNNPhF]) and used as catalyst precursor in association with methylaluminoxane (MAO) as cocatalyst in propylene oligomerization. The presence of a fluorine group
Cobalt(II) complexes containing nitrogen donor tridentate ligands derived from 2,6-diacetylpyridine and aniline or 4-methoxyaniline
作者:Dennis A. Edwards、Suzanne D. Edwards、William R. Martin、Thomas J. Pringle、Peter Thornton
DOI:10.1016/s0277-5387(00)83708-0
日期:1992.1
Reactions of cobalt(II) chloride, bromide and isothiocyanate with the tridentateligands derived from the condensation of 2,6-diacetylpyridine with either aniline or 4-methoxyaniline afford the high-spin five-coordinatecomplexes of the type [CoX2L] (X = Cl, Br, or NCS; L = tridentateligand). Reactions of Co(ClO4)2·6H2O with an excess of these ligands give mer-octahedral complexes of the type [CoL2][ClO4]2