Study of Crystal Field Parameters for Octahedral Crystal Field

Abstract

The crystal field environment variations give information about many thermodynamic, spectral and magnetic properties. Variation of crystal field affects the inter-electronic repulsion of central ion. In Physics, it forms a very effective tool for calculating the various crystal field parameters in metal complexes. Some complexes of Co(II) metal ion have been  synthesized with Glycine as the primary ligand and Pyridine,α- picoline, β-picoline and oxine as secondary ligand. The FTIR spectra of complexes have been compared with that of free ligand which unveils the coordination of the prime ligand through amino-nitrogen and carboxylic oxygen forming a five membered chelate ring. The electronic spectra of complexes were recorded. The values of different crystal-field parameters D_q, B and β are calculated with the help of Tanabe-Sugano diagram and A. B. P. Lever method.