| abstract |
This invention relates to a metathesis catalyst comprising a Group 8 metal complex represented by the formula: (I) wherein: M is a Group 8 metal; each X is independently an anionic ligand; R 1 and R 2 are independently selected from the group consisting of hydrogen, a C 1 to C 30 hydrocarbyl, and a C 1 to C 30 substituted hydrocarbyl; R 3 and R 4 are independently selected from the group consisting of hydrogen, C 1 to C 12 hydrocarbyl groups, substituted C 1 to C 12 hydrocarbyl groups, and halides; and L is a neutral donor ligand. This invention also relates to processes for performing a metathesis reaction, in particular ring opening cross metathesis reactions and ring opening metathesis polymerization reactions, using the Group 8 metal complexes. |