A general synthetic methodology is reported for tris(bidentate)ruthenium(II) complexes containing three different polypyridyl ligands, based on the sequential addition of the ligands to the oligomer [Ru(CO)(2)Cl-2](n). The tris(heteroleptic) complexes were characterized by FAB mass spectrometry and NMR spectroscopy. An X-ray crystal structure determination was made for the complex, [Ru(Me(2)bpy)(phen)(bpa)](PF6)(2) . C6H14 [C40H43F12N7P2Ru, M = 1062.8; Me(2)bpy = 4,4'-dimethyl-2,2'-bipyridine, phen = 1,10-phenanthroline, bpa = bis(2-pyridyl)amine]: triclinic, space group , a = 14.57(3) Angstrom, b = 13.50(3) Angstrom, c = 12.73(3) Angstrom, alpha = 68.6(2)degrees, beta = 63.5(1)degrees, gamma = 79.8(2)degrees, V = 2082 Angstrom(3), Z = 2. Aspects of the electrochemistry, spectroscopy, and photophysics of the tris(heteroleptic) species are discussed.
Anderson, P. A., Deacon, G. B., Haarmann, K. H., Keene, F. R., Meyer, T. J., Reitsma, D. A., ... White, A. (1995). Designed synthesis of mononuclear tris(heteroleptic) ruthenium complexes containing bidentate polypyridyl ligands. Inorganic Chemistry, 34, 6145-6157. https://doi.org/10.1021/ic00128a028