The isotropic hyperfine interaction in some aliphatic polyamine copper II complexes

✍ Scribed by V. G. K. M. Pisipati; G. Satyanandam; N. V. S. Rao

• Publisher: John Wiley and Sons
• Year: 1981
• Tongue: English
• Weight: 341 KB
• Volume: 17
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1270170402

✦ Synopsis

Abstract

ESR and optical absorption studies have been carried out on bis[N‐(2‐hydroxyethyl)ethylenediamine] copper II‐chloride, ‐bromide, ‐nitrate, ‐sulphate, bis(N‐methylethylenediamine) copper II thiocyanate and bis(N,N′‐dimethylethylenediamine) copper II thiocyanate, in non‐interacting solvents at room and liquid nitrogen temperatures. The molecular orbital coefficients are estimated assuming axial symmetry and indicate that the in‐plane π bond is as strong as the σ bond. The consistency in the value of the χ parameter, which is proportional to the hyperfine constants, indicates that it is quite independent of the ligand substitution and depends upon the immediate environment of the copper II ion.