摘要:
The mononuclear cationic complexes [(eta(6)-C6H6)RuCl(L)](+) (1), [(eta(6)-p-(PrC6H4Me)-Pr-i)RuCl(L)](+) (2), [(eta(5)-C5H5)Ru(PPh3)(L)](+) (3), [(eta(5)-C5Me5)Ru(PPh3)(L)](+) (4), [(eta(5)-C5Me5)RhCl(L)](+) (5), [(eta(5)-C5Me5)IrCl(L)](+) (6) as well as the dinuclear dicationic complexes [{(eta(6)-C6H6)RuCl}(2)(L)](2+) (7), [{(eta(6)-p-(PrC6H4Me)-Pr-i)RuCl}(2)(L)](2+) (8), [{(eta(5)-C5H5)Ru(PPh3)}(2)(L)](2+) (9), [{(eta(5)-C5Me5)Ru(PPh3)}(2)(L)](2+) (10), [{(eta(5)-C5Me5)RhCl}(2)(L)](2+) (11) and [{(eta(5)-C5Me5)IrCl}(2)(L)](2+) (12) have been synthesized from 4,4'-bis(2-pyridyl-4-thiazole) (L) and the corresponding complexes [(eta(6)-C6H6)Ru(mu-Cl)Cl](2), [(eta(6)-p-(PrC6H4Me)-Pr-i)Ru(mu-Cl)Cl]2, [(eta(5)-C5H5)Ru(PPh3)(2)Cl)], [(eta(5)-C5Me5)Ru(PPh3)(2)Cl], [(eta(5)-C5Me5)Rh(mu-Cl)Cl](2) and [(eta(5)-C5Me5)Ir(mu-Cl)Cl](2), respectively. All complexes were isolated as hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV-vis spectroscopy. The X-ray crystal structure analyses of [3]PF6, [5]PF6, [8](PF6)(2) and [12](PF6)(2) reveal a typical piano-stool geometry around the metal centers with a five-membered metallo-cycle in which 4,4'-bis(2-pyridyl-4-thiazole) acts as a N, N'-chelating ligand. (C) 2009 Elsevier B.V. All rights reserved.