IJSRP, Volume 5, Issue 2, February 2015 Edition [ISSN 2250-3153]
Kamalika Banerjee, Pramod Kumar Singh, Sangeeta Singla
Coordination complexes of Chromium(III), Manganese(II), Iron(III) and Zinc(II) with two new novel ligands N-2-hydroxybenzaldehyde- -isonicotinoylhydrazones (hbihH2=H2L1) and N-2-hydroxy-4-methylbenzaldehyde- -isonicotinoylhydrazone (hmihH2= H2L2) have been prepared and characterized by elemental analysis, electrical conductance, IR spectra, 1H NMR spectra, EPR spectra, Magnetic susceptibility, and TGA analysis. Aroylhydrazones act as dibasic tridentate ligand in the chelates, coordinating through the deprotonated naphtholic oxygen atom, azomethine nitrogen atom and enolic oxygen atom, based on the nature of metal salts used and the reactions conditions. The magnetic and spectral data indicates the chelates to be in octahedral environment and analytical data indicate 1:1 stoichiometries for all the complexes.