Ruthenium(II) complexes of α-diimines: synthesis, spectral characterisation, electrochemical properties and single-crystal X-ray structure of bis(2,2′-bipyridine){1-benzyl-2-( p -tollylazo)imidazole}ruthenium(II) perchlorate
作者： Sanjib Pal , Tarun K. Misra , Chittaranjan Sinha , Alexander M.Z. Slawin , J.Derek Woollins
DOI: 10.1016/S0277-5387(00)00447-2
关键词: Perchlorate 、 Chemistry 、 Photochemistry 、 Imidazole 、 Crystallography 、 Acetonitrile 、 Redox 、 2,2'-Bipyridine 、 Ruthenium 、 Ligand 、 Electrochemistry
摘要: Abstract Mixed-ligand tris-chelates, [Ru(bpy)2(RaaiR′)](ClO4)2·H2O (bpy=2,2′-bipyridine; RaaiR′=1-alkyl-2-(arylazo)imidazole) have been synthesized by a silver-assisted route [Ru(bpy)2Cl2+RaaiR′+AgNO3+NaClO4/Ru(bpy)2Cl2+[Ag(RaaiR′)2](ClO4)]. The structures of the complexes supported single-crystal X-ray diffraction study and stereochemistry are assessed 1H NMR spectral data. All show two metal-to-ligand charge transfer (MLCT) transitions in visible region at ca. 400 500 nm their emission spectra also described here. Cyclic voltammetric studies exhibit high-potential RuIII/II (1.4 V vs. SCE) three successive ligand reductions negative to SCE acetonitrile solution. difference first metal redox potentials linearly correlated with νCT MLCT band.
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