Deuterium-substitution effects on relaxation times and interligand nuclear Overhauser effects for assignment of ligand resonances and isomer identification in cobalt(III) complexes

Relaxation time, T/sub 1/, and nuclear Overhauser effects are reported for nine imidazole complexes and one histidine complex of Co(III). From these values unequivocal resonance and isomer assignments can be made. The deuterium substitution effect of T/sub 1/'s has been used to determine intranuclear distances and molecular configurations.