Study of ruthenium complexes using chemical shifts of Ru x-ray Ksub(α1)-line and isomeric shifts of 99 Ru nuclear gamma resonance

Chemical shifts of the X-ray Ksub(α1) line for a number of Ru complexes have been measured. The results obtained have been studied in conjuction with the data on the isomer shifts of NMR of 99Ru. A dependence of the Ksub(α1) line shift for Ru on the valence has been obtained. The maximum total charge is attained in RuO4 (1.71e). In the complex compounds of Ru(2) and Ru(3) with various ligands one can observe an involved redistribution of the charges between the 5s-4d-states, the total charge in the case of K2[RuNO(CN)5] reaching 1.1e. The estimation of the charges thus obtained on the ruthenium and ligands makes it possible to arrange the latters according to their donor-acceptor activity: -0.46 NO2<CN approximately Cl<CO<Cl approximately Br<NO<NH3<H2O = 0.22