Ruthenium(III) and rhodium(I) chelates of azomethines derived from 1-(2-naphthenyl)ethanone

Abstract

Ru(III) and Rh(I) complexes of some biologically active azomethines with NX (X = S or O) donor system have been <i>described. </i> The products of type Ru(NX)₃ and (PPh₃)₂Rh(NX) were obtained by 1:3 and 1:1 molar reactions of RuCI₃.3H₂O and (PPh₃)₃RhCI with monofunctional <i>bidentate. </i> azomethines and have been characterised by elemental analyses, molecular weight determinations, conductance measurements, X-ray powder diffraction and spectroscopic techniques such as electronic, IR, ¹H NMR, ¹³C NMR and ³¹P NMR. From the analysis of above studies the donor sites of ligand have been located and geometries of the donor environment around the Ru(III)/Rh(I) acceptor centre proposed. The ligands and their metal complexes have been tested on a number of pathogenic fungi and bacteria in order to assess their growth inhibiting potency at different concentrations.