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Updated: Jan 28, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Ruthenium complex bearing pyrrolbipyridine and dimethyl sulfoxide ligands: syntheses, structures, substitution
Si-Dan Zhong1, Shan Zhao1, Chen Zhou1
1College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha, Hunan 410083, P. R. China. xyyi@csu.edu.cn.
Abstract:
Treatment of cis-[Ru(dmso)4Cl2], bipy and Hpbp (dmso = dimethyl sulfoxide, bipy = 2,2'-bipyridine, Hpbp = 6-(1H-pyrrol-2-yl)-2,2'-bipyridine) in the presence of Et3N affords the ruthenium complex [Ru(pbp)(bipy)(dmso)]PF6 (1). This complex demonstrates the S → O linkage isomerization of the dmso ligand upon Ru-center oxidation from +II to +III, as confirmed by thermodynamic and kinetic data obtained from cyclic voltammetry (CV) experiments. The photochemical S → O linkage isomerization of the dmso ligand in complex 1 is also observed. Taking advantage of the photoinduced linkage isomerization in complex 1, complexes [Ru(pbp)(bipy)(CH3CN)]PF6 (1-CH3CN) and [Ru(pbp)(bipy)(NH3)]PF6 (1-NH3) are synthesized with high yield upon irradiation of the DMSO ligand of complex 1 in the presence of CH3CN and NH3, respectively. These complexes are fully characterized via NMR, IR, EA, ESI-MS, and EA. X-ray diffraction analysis revealed that the CH3CN and NH3 ligands in 1-CH3CN and 1-NH3 in place of the dmso ligand in complex 1 coordinate with the Ru center at the axial position. Complex 1-NH3 demonstrates good electrocatalytic performance for the selective oxidation of ammonia to hydrazine.
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