On the theory of pseudocontact N.M.R. shifts due to lanthanide complexes

Abstract

The pseudocontact N.M.R. shifts due to complexes of lanthanide ions are considered in a crystal field theoretical framework including all the states J, M of an L-S manifold and an arbitrary set of crystal field parameters. Deviations from Bleaney's earlier theory are shown to be of the order of 20 per cent when the higher crystal field parameters are added.