Detecting proximities between quadrupolar nuclei by double-quantum NMR.
A robust, easy to optimize, and efficient homonuclear correlation NMR experiment for half-integer quadrupolar nuclei in solids is described and has been experimentally tested on anhydrous Na2HPO4-(23Na, S= 3/2 nucleus) and as-synthesized AlPO4-14 (27Al, S= 5/2 nucleus), an aluminophosphate molecular sieve.
Mali
Gregor
G
National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia. gregor.mali@ki.si
Taulelle
Francis
F