Patent ID: 6939981

Claim:
A ruthenium complex compound comprising a ruthenium compound having formula 1: [(R 3 ) 3 P] 3 RuX 2 1 and a chiral substantially enantiomerically pure ligand having formula 2: (R) 2 P—L—N(R 2 )P(R 1 ) 2 2 wherein R, R 2 , and R 3 are, independently, substituted or unsubstituted, branched- or straight-chain C 1 –C 20 alkyl, substituted or unsubstituted C 3 –C 8 cycloalkyl, substituted or unsubstituted C 6 –C 20 carbocyclic aryl, or substituted or unsubstituted C 4 –C 20 heteroaryl having one to three heteroatoms wherein the heteroatoms are selected from sulfur, nitrogen, and oxygen; R 1 is substituted or unsubstituted, branched- or straight-chain C 1 –C 20 alkyl, substituted or unsubstituted, branched- or straight-chain C 1 –C 20 alkoxy, substituted or unsubstituted C 3 –C 8 cycloalkyl, substituted or unsubstituted C 3 –C 8 cycloalkoxy, substituted or unsubstituted C 6 –C 20 carbocyclic aryl, substituted or unsubstituted C 6 –C 20 carbocyclic aryloxy; X is fluoride, chloride, bromide, or iodide; and L is a divalent chiral radical selected from substituted or unsubstituted, branched- or straight-chain C 1 –C 20 alkylene, substituted or unsubstituted C 3 –C 8 cycloalkylene, substituted or unsubstituted C 6 –C 20 carbocyclic arylene, substituted or unsubstituted C 4 –C 20 heteroarylene having one to three heteroatoms wherein the heteroatoms are selected from sulfur, nitrogen, and oxygen, or substituted or unsubstituted metallocenylmethylene wherein L is substantially enantiomerically pure.