2 9-dimethyl-4 7-diphenyl-1 10-phenanthroline July 8, 2019 16 32 64 128 2 9-dimethyl-1 10-phenanthroline 4 7-dimethyl-1 10-phenanthroline 9 9-dimethyl-4 5-bis(diphenylphosphino)xanthene
