Patent ID: 6444818
Filing Date: 2002-09-03
Classification: C23C

Abstract:
A precursor composition comprising one or more complexes of the formula: wherein: M is a transition metal; each R group is independently H, a hydrocarbyl group, a halogenated hydrocarbyl group, a halide, or a silylated hydrocarbyl group, with the proviso that R3 and R4 are not both H, optionally any of the R groups are joined together to form a ring or rings, and optionally the R groups are replaced by multiple bonds between atoms; each L group is independently H, a hydrocarbyl group, a halogenated hydrocarbyl group, a silylated hydrocarbyl group, or a halide; x=1 to 3; n=0 to 4; y=0 to 4; and further wherein the precursor composition includes at least two complexes containing different metals.