Preparation, characterization and structure of ruthenium phosphine complexes containing non-innocent ligands

Abstract Phosphine ruthenate complexes containing the non-innocent ligands 4-chloro-1,2-phenylenediamine (opda-Cl) and 3,3′,4,4′-tetraamminebiphenyl (diopda) were synthesized and characterized by means of X-ray diffraction, electrochemistry, 31 P{ 1 H} NMR and electronic spectroscopies. Crystals of cis -[RuCl 2 (dppb)(bqdi-Cl)] complex were isolated as a mixture of two conformational isomers due to different positions of the chlorine atoms of the o -phenylene ligand in relation to the P1 atom of the phosphine moiety.