Journal of Organic & Inorganic Chemistry

A Study of â??Spectral and magnetic studies of four, five and six coordinated complexes of substituted hydrazides and hydrazones with Ni(II), Co(II), Mn(II) and Cr(III) metalsâ?

The paper takes an in-depth look at the work of Metal-ligand interactions involving a large pH range and non-aqueous solvents which present many interesting points requiring further elucidation. In the former case, it has been claimed that the reaction product undergoes dimerization depending upon the pH of the medium. Attempt has been made in this thesis to investigate this aspect on the basis of magnetic and spectral data. Various physico-chemical techniques are employed for ascertaining the structure and geometry of the compounds. These are calorimetry, DTA, TGA, potentiometry, polarography, UV, IR, EPR, NMR, X-ray diffraction, electron and neutron diffraction etc. Relevant to the present investigations are UV and Vis, IR, magnetic susceptibility and elemental analysis.

The role of metal ions in the biological system is seen in connection with enzymes polypeptides and amino acids. These acts as energy reacting catalyst by coordinating through certain ligand atom.

In view of the importance of Schiff's base complexes in biological reaction, it was through worthwhile to carry out investigations with metal complexes of pyridine based hydrazides and hydrazones. This is because they are versatile and interesting ligands, for several reasons, viz. (a) these can function as tri-,tetra- or pentadentate ligands, (b) coordination can occur through dianionic, monoanionic or neutral forms of these ligands and (c) these can sometime bridge two metal ions through nitrogen to oxygen atoms. The antibacterial and antifungal activities of Co(II) complexes are well known. Therefore, the following ligands were synthesized and their complexes with Ni(II), Co(II), Cr(III) and Mn(II) were isolated both at low and high pH.

https://bluecruiseturkey.co
https://bestbluecruises.com
https://marmarisboatcharter.com
https://bodrumboatcharter.com
https://fethiyeboatcharter.com
https://gocekboatcharter.com
https://ssplusyachting.com

Author(s):

Saurabh Bhardwaj

Abstract | Full-Text | PDF

Share this