COMPLEXES OF TREPYRIDINE AND THEIR DERIVATIVES AS LIVING SYSTEM ACTIVE COMPOUNDS

Ruthenium (II) mixed ligand mononuclear metal complexes containing 4'-(thiophene-2-yl)-2,2':6',2''-terpyridine (a tridentate ligand) and various bidentate ligands (1,10-phenanthroline, 1,10-phenanthroline-5,6-dione, 6,6'-dimethylbipyridyl, 4,4'-bipyridine-dicarboxylic acid, 4,4'-dimethyl-bipyridyl, bipyridyl, 1,10-phenanthroline-pyrazinephenanthrene fused planar ligand (L1)), and a chloride ligand and a binuclear ruthenium complex having 1,10phenanthroline-pyrazine-1,10-phenanthroline fused planar ligand (L2) and 4'-(thiophene-2-yl)-2,2':6',2''-terpyridine ligands have been synthesized with fairly good yield using a modified literature procedure. All the eight complexes were precipitated as hexafluorophosphate salt from aqueous solution. These complexes were completely soluble in acetonitrile and sparingly soluble in water.