An electron spin resonance study of some copper(II) complexes of unsaturated carboxylic acids

Abstract

The electron spin resonance spectra of copper(II) complexes with acrylic, allylacetic, and vinylacetic acids are reported together with some of their adducts of the type Cu(O₂CR)₂L. The e.s.r. spectra can be interpreted in terms of a dimeric species in which the two copper atoms are exchange-coupled. Computer simulations of the e.s.r. spectra have been used to interpret the experimental spectra and to establish values of g_‖, g_⊥, and D.