High magnetic field consequences on the NMR hyperfine shifts in solution
Pseudocontact shifts arise from the isotropic reorientational average of the dipolar coupling between unpaired electron and nuclei, in the presence of magnetic susceptibility anisotropy. The effect of residual orientation due to high magnetic fields on pseudocontact shifts is evaluated here. The effect is found to be smaller and of opposite sign with respect to another novel effect of high magnetic fields on hyperfine shifts due to saturation of the electron spin magnetic moment as described by the Brillouin equation. Copyright 1998 Academic Press.
Bertini
I
Department of Chemistry, University of Florence, Florence, Italy.
Felli
IC
Luchinat
C