✍ Scribed by A. Samoson; T. Anupõld
No coin nor oath required. For personal study only.
Analytical expressions for multi-quantum signal generation of quadrupole nuclei have been derived. Combined with numerical simulation of the double rotor motion, a strategy is suggested for partial sideband suppression in multi-quantum NMR spectra. Synchronization of multi-quantum excitation and selective flip pulses with outer rotor motion increase outer rotor speed effectively two times. This is also demonstrated experimentally by triple-single quantum correlation spectra of 23 Na and 67 Rb.
📜 SIMILAR VOLUMES
The 27Al NMR spectra of calcium tungstate aluminate sodalite (CAW), Ca8[Al12O24](WO4)2, and the 23Na NMR spectra of sodium aluminosilicate sodalites of general composition Na9[Si6Al6O24]A2 with A = B(OH)4- (SBS), SCN- (SRS) and A2 = SO4(2-) (SSS), MoO4(2-) (SMS) have been measured using magic-angle
## REDOR is a magic-angle spinning experiment for measuring internuclear distances between heteronuclear spin pairs. The basic principles of the REDOR technique are presented. The experimental requirements necessary for quantitative REDOR measurements are also provided.