High-resolution solid-state NMR for spin 3/2 and 9/2: the multi-quantum transitions method.
A new method of high-resolution NMR for spin 3/2 and 9/2 in the solid-state is proposed: the multi-quantum transitions technique. This method uses MAS (or VAS) in commercially available probeheads. For spin I = 3/2 the observation at 3v0 of samples rotating at 70.12 degrees completely eliminates 1st and 2nd order quadrupolar interactions and scales the shielding anisotropy by a factor of 0.98. For spin I = 9/2, lines observed at 7v0 in the MAS condition are clearly narrower and more separated than the corresponding ones observed at v0.
Amoureux
J P
JP
Laboratoire de Dynamique et Structure des Matériaux Moléculaires, URA 801, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France.
D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics