3919866 Ru-PZn ruthenium(II) (5-(4'-ethynyl-(2,2';6',2' '-terpyridinyl))-10,20-bis(2',6'-bis(3,3-dimethyl-1-butyloxy)phenyl)porphinato)zinc(II)-(2,2';6',2' '-terpyridine)2+ bis-hexafluorophosphate 2