Patent ID: 7087774

Claim:
A 1,3-diimine copper complex, (II), wherein R 5 and R 8 are dimethylamino; and R 6 and R 7 are independently selected from the group consisting of H, C 1 –C 5 alkyl, phenyl, benzyl, and 4-pyridinyl, with the proviso that the total number of carbons in R 5 –R 8 is 4–14; or R 5 and R 8 are independently selected from the group consisting of H, C 1 –C 5 alkyl, and dimethylamino; and R 6 and R 7 are selected from the group consisting of H, C 1 –C 5 alkyl, phenyl, benzyl, and 4-pyridinyl, with the proviso that either R 6 or R 7 is 4-pyridinyl, and the proviso that the total number of carbons in R 5 –R 8 is 4–14.