Patent ID: 7375242

Claim:
A compound of the formula wherein: R 2 is hydrocarbyl or substituted hydrocarbyl, provided that R 2 is attached to said nitrogen atom in (II) by a carbon atom that has at least 2 other atoms that are not hydrogen attached to it; and R 3 , R 4 , R 5 , R 6 and R 7 are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, provided that any two of R 3 , R 4 , R 5 , R 6 and R 7 vicinal to one another taken together may form a ring; L 1 is a monodentate monoanionic ligand and L 2 is a monodentate neutral ligand or an empty coordination site, or L 1 and L 2 taken together are a monoanionic bidentate ligand.