Patent ID: 6906155
Filing Date: 2005-06-14
Classification: C07F,C08F,C08J,C08L,Y10S

Abstract:
1. A compound of a Group 3 to Group 10 transition metal or lanthanoid represented by Formula (VIII): wherein each of A 3 and A 4 denotes a linking group consisting of a Group XIV element selected from the group consisting of Si, Ge, and Sn and may be the same as or different from each other, X 4 denotes a σ-binding or π-binding ligand, and when two or more X 4 are present they may be the same or different, Y 5 is a Lewis base and when two or more Y 5 are present they may be the same or different, and each Y 5 may be linked with another Y 5 or X 4 , q is an integer of 1 to 5 and represents (valency of M 3 )−2, r is an integer of 0 to 3, each of R 21 to R 30 denotes a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, a silicon-containing group having 1 to 20 carbon atoms and a heteroatom-containing group having 1 to 20 atoms, and M 3 denotes a metal element of Group 3 to Group 10 or of lanthanoids in the periodic table.