Catalyst Compositions and Use Thereof

A catalyst compound represented by the formula:

• wherein
• the dotted line indicates a dative bond;
• M is a group 4 metal;
• each J is, independently, Si or Ge, provided that when z is 2 or more one JR*s may be CR*2;
• z is a number from 1 to 12, provided that when z is 2, the two JR*2 groups may be connected by a heteroatom, X*, to form a group represented by the formula R*2J-X*-JR*2;
• each of R1*, R2*, R3*, R4*, and R* is, independently, hydrogen, a substituted C1 to C40 hydrocarbyl group, a C1 to C40 unsubstituted hydrocarbyl group, or a heteroatom, provided that any adjacent R* groups may form a fused ring or multicenter fused ring system where the rings may be aromatic, partially saturated or saturated;
• and
• each X is, independently, a substituted C1 to C40 hydrocarbyl group, a C1 to C40 unsubstituted hydrocarbyl group, a hydride, an amide, an alkoxide, a sulfide, a phosphide, a halide, an amine, a phosphine, an ether, a combination thereof, or two X's may form a part of a fused ring or a ring system.