Patent ID: 8680289

Claim:
A ruthenium compound represented by Structure A: wherein R 1 can be same or different selected from group consisting of linear or branched C 1-10 alkyls, C 1-10 alkoxyalkyl, and C 1-10 aminoalkyl; R 2-3 are same or different selected from group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, and isomers of pentyl; when R 2 is hydrogen, R 1 and R 3 can not be both C1 alkyl; when R 3 is hydrogen, R 1 and R 2 can not be both C1 alkyl; and R 4-8 can be same or different selected from group consisting of hydrogen, linear or branched C 1-10 alkyls, C 1-10 alkoxyalkyl, and C 1-10 aminoalkyl.