β Scribed by V. G. K. M. Pisipati; N. V. S. Rao; V. Muralikrishna; Premchand
No coin nor oath required. For personal study only.
ESR and optical absorption studies are described for a number of ternary copper(I1) compounds formed with substituted amino acids and different aliphatic polyamines, giving rise to two different immediate environments around copper(II), [3N, OJ and [ZN, 201. The ESR measurements were carried out in different solvents such as dmethyl sulphoxide, dimethylformamide and pyridme at room and liquid nitrogen temperatures. Molecular orbital coefficients were estimated assuming an axial symmetry. The parameter x, proportional to the hyperfine constants, was estimated and shows a variation with solvent. The x values in a solvent were found to be lower than the corresponding average values reported in the solid state for a particular type of environment. The solvent effect and the influence of the 4s character in the ground state are discussed. The hyperfine line widths in solution are estimated using Wvelson's theory. The disagreement between theoretical and experimental line widths are discussed.
π SIMILAR VOLUMES
The liie widths of the hyperfine components of the ESR spectra of a number of binary and ternary copper(I1) compounds formed with ligands such as acetylacetone, 8-hydroxyquinoline, salicylic acid and diethyldithiocarbamate, in dimethylformamide solution at room temperature, were analysed using the t