Patent ID: 8163853

Claim:
A transition metal complex represented by the formula: wherein M 1 is a metal atom selected from the group consisting of Fe, Ru, and Co; Q is —CR 3 R 4 — or —SiR 3 R 4 —; Z is —NR 1 R 2 or —NR 2 and R 1 to R 16 are independently selected from the group consisting of hydrogen, alkyl, aryl, arylalkyl, halogen, alkoxy, aryloxy, amino, and silyl; and M 2 is a group 3 through group 6 metal with one to four additional donor and/or anionic ligands coordinated to M 2 , and two adjacent carbon atoms of at least one cyclopentadienyl moiety may be linked by a saturated or unsaturated cyclic moiety having from 3 to 6 carbon atoms, optionally containing a heteroatom, and R 1 and R 2 in —NR 1 R 2 and R 3 and R 4 in CR 3 R 4 — or —SiR 3 R 4 may form a chain of from 3 to 6 carbon atoms, optionally including a heteroatom.