Patent ID: 6268444
Filing Date: 2001-07-31
Classification: C07F,C08F,Y10S

Abstract:
A metal complex corresponding to the formula: ##STR90##whereinM is Ti, Zr, or Hf;j is 1 or 2;when j is 1, T is O or S, when j is 2, T is N or P;R.sup.B is independently a group having from 1 to 80 nonhydrogen atoms which is hydrocarbyl, hydrocarbylsilyl, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, hydrocarbylamino-substituted hydrocarbyl, or hydrocarbylsilylhydrocarbyl, each R.sup.B optionally being substituted with one or more groups which are independently hydrocarbyloxy, hydrocarbylsiloxy, hydrocarbylsilylamino, di(hydrocarbylsilyl)amino, hydrocarbylamino, di(hydrocarbyl)amino, di(hydrocarbyl)phosphino, or hydrocarbylsulfido, having from 1 to 20 nonhydrogen atoms; or, optionally, two R.sup.B are covalently linked with each other to form one or more fused rings or ring systems;R.sup.A, R.sup.W, R.sup.X, R.sup.Y and R.sup.Z are independently hydrogen, or a group having from 1 to 80 nonhydrogen atoms which is hydrocarbyl, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, hydrocarbylamino-substituted hydrocarbyl, hydrocarbylsilyl, or hydrocarbylsilylhydrocarbyl, or, optionally, two or more of R.sup.W, R.sup.X, R.sup.Y, R.sup.Z, R.sup.A and R.sup.B are covalently linked with each other to form one or more fused rings or ring systems;Z is a divalent moiety bound to both Cp and M via .sigma.-bonds, where Z comprises boron, or a member of Group 14 of the Periodic Table of the Elements, and also comprises nitrogen, phosphorus, sulfur or oxygen;X is an anionic or dianionic ligand group having up to 60 atoms exclusive of the class of ligands that are cyclic, delocalized, .pi.-bound ligand groups;X' independently each occurrence is a neutral Lewis base ligating compound having up to 20 atoms;p is zero, 1 or 2, and is two less than the formal oxidation state of M, when X is an anionic ligand; when X is a dianionic ligand group, p is 1; andq is zero, 1 or 2.