Syntheses, reactivity, structures and photocatalytic properties of mononuclear ruthenium(II) complexes supported by 1,4,7-trimethyl-1,4,7-triazacyclononane (Me3tacn) ligands

摘要: Abstract Treatment of ruthenium(II) precursor [(Me3tacn)Ru(dmso)Cl2] (Me3tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane, dmso = dimethylsulfoxide) (1) with concentrated HCl in the presence air afforded a ruthenium(III) complex [(Me3tacn)RuCl3·H2O] (2). Reaction 2, 2,2′-bipyridine or substituted 2,2′-bipyridine, and zinc metal powder sodium perchlorate gave corresponding cationic aquaruthenium(II) [(Me3tacn)Ru(R-bpy)(H2O)](ClO4)2 (bpy = 2,2′-bipyridine, R = H, 3; 4,4′-Me2, 4; 5,5′-Me2, 5; 4,4′-di-tBu, 6). The hydrate ligand complexes 3 5 could be by acetonitrile pyridine forming [(Me3tacn)Ru(5,5′-Me2-bpy)(CH3CN)](ClO4)2 (7) [(Me3tacn)Ru(R-bpy)(py)](ClO4)2 (py = pyridine, R = H (8), R = 5,5′-Me2 (9), respectively. Interaction [(Me3tacn)Ru(bpy)(H2O)](PF6)2 phenylacetylene methanol ruthenium-carbene [(Me3tacn)(bpy)Ru=C(OMe)CH2Ph](PF6)2 (10). All are well characterized infrared, UV/Vis, NMR spectroscopies. molecular structures 1, 1·2H2O, 4·2H2O, 7, 8, 9, 10 have been also established single-crystal X-ray diffraction. photocatalysis properties 3, 5, 6 for H2 evolution water splitting were investigated paper.