New lanthanide complexes of 1,1`-bis[(2-thienylmethylidene)hydrazono-1-ethyl]-ferrocene and 1,1`-bis(2,3-dihydro-2-methylbenzo[d]thiazol-2-yl)ferrocene: Synthesis, characterization and antimicrobial properties

Abstract

In this paper; synthesis, characterization and biocidal properties of new prepared Sc(III), Y(III), La(III) and Ce(III) complexes with the two ferrocenyl ligands of 1,1`-bis[(2-thienylmethylidene)hydrazono-1-ethyl]ferrocene and 1,1`-bis(2,3-dihydro-2-methylbenzo[d] thiazol-2-yl)ferrocene are reported. These organometallic compounds are potential ligands for lanthanide metal ions. The composition of these complexes is discussed on the basis of elemental analysis, IR, NMR, magnetic moments, electronic absorption spectra and conductivity measurements. In vitro antimicrobial activity of the prepared complexes was screened. All complexes showed remarkable antibiotic activity. Scandium complexes are very effective towards Salmonella spp. Sc-L² complex found to have inhibition activity against B. subtilis more than the standard drugs.