Patent ID: 6160065
Filing Date: 2000-12-12
Classification: C07F,C08F,Y10S

Abstract:
A metal complex corresponding to the formula: ##STR7## wherein Y is yttrium;R independently in each occurrence is selected from the group consisting of hydrogen, hydrocarbyl, silyl, and germyl, said R having up to 20 non-hydrogen atoms, or adjacent R groups are linked together thereby forming a fused ring system; andZ is a divalent substituent of up to 50 non-hydrogen atoms having the formula, -(ER'.sub.2).sub.m-, wherein E independently each occurrence is carbon, silicon or germanium, R' independently each occurrence is selected from the group consisting of hydrocarbyl, hydrocarbyloxy, silyl, and germyl of up to 20 atoms other than hydrogen, and m is an integer from 1 to 3,or a dimeric derivative, solvated adduct or chelated derivative thereof.