ESR and ENDOR of copper(II) complexes with nitrogen donors: probing parameters for prosthetic group modeling of superoxide dismutase

摘要: The coordination properties of square-planar complexes Cu(II) with N 4 or 2 O ligation using imidazole, pyridine, glycine, ethylenediamine, diethylenetriamineimidazole, and ammonia as ligands were investigated by electron spin resonance (ESR) nuclear double (ENDOR) spectroscopies at 77 K about 5 K, resistively. Combining isotopic substitution in metal, ligand, solvent ESR measurements X- (9.5 GHz) Q-band (34 second-order spectra simulation, a comprehensive set parameters was obtained