Selective Oligomerization of Ethylene to Linear α-Olefins by Tetrahedral Cobalt(II) Complexes with 6-(Organyl)-2-(imino)pyridyl Ligands: Influence of the Heteroatom in the Organyl Group on the Catalytic Activity
作者:Claudio Bianchini、Giuseppe Mantovani、Andrea Meli、Fabio Migliacci、Franco Laschi
DOI:10.1021/om030227d
日期:2003.6.1
The oligomerization of ethylene to alpha-olefins has been obtained by MAO activation of tetrahedral Co-II complexes of iminopyridines substituted in the 6-position of the pyridine ring by thiophen-2-yl, furan-2-yl, or phenyl groups. An intriguing heteroatom effect has been noticed on both activity and selectivity, together with a change in the Co-II spin state upon activation of the dichloride precursors with MAO.