Abstract

Abstract Ruthenium(II) complexes containing nine pyrimidine-2-thione [Ru(L-N,S)(bpy)2]+ (HL = pyrimidine-2-thione; bpy = 2,2′-bipyridine) are prepared and characterized. Two linkage isomers exist for most of the complexes with unsymmetrical ligands. The isomeric ratios are interpreted by CH/π attractive interaction between the 4- or 6-alkyl group of the thione ligands and the π-system of bpy.

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