Synthesis and spectroscopic characterization of some novel Ru(II) and Ru(III) dimeric sulphoxide complexes containing the Schiff base N,N′-bis(2-chlorobenzylidene)-1,2-ethylenediamine as spacer

We report the synthesis and characterization of anionic and neutral dimers of three general formulations viz. [{cis-RuCl2(SO)(3)}(2)(2-ClBENEN)]; [{trans-RuCl2(SO)(3)}(2)(2-ClBENEN)] and [image omitted][{RuCl4(SO)}(2)(2-ClBENEN)](2-); where SO = dimethylsulphoxide/tetramethylenesulphoxide; X = [(dmso)(2)H](+); Na+; [(tmso)H](+); and 2-ClBENEN = N,N'-bis(2-chlorobenzylidene)-1,2-ethylenediamine. These complexes were characterized on the basis of elemental analysis, magnetic susceptibility, electronic, FTIR, H-1-NMR and C-13{H-1}NMR spectroscopy. These complexes are rare examples where a Schiff-base ligand serves as a spacer group.