| abstract |
(57) [Summary] The following formula (I) or (I ′) Wherein M is a subgroup VIII metal of the periodic table, E is a main group V element of the periodic table, R 1 -R 11 and R 15 are hydrogen, a C 1 -C 30 organic carbon group. and C 3 -C 30 substituents selected from an organic silicon group, R 12 -R 14 are, mean a substituent selected from C 1 -C 30 organic carbon group and C 3 -C 30 organosilicon group, respectively The metal complex is preferably used for oligomerization or polymerization of an olefinic saturated compound or copolymerization of an olefinically unsaturated compound with carbon monoxide. |