Abstract : From two-dimensional multiquantum NMR spectra of quadrupolar nuclei, it is now possible to obtain much greater resolution than in a classical single-quantum magic-angle spinning or variable-angle spinning spectrum. We describe here a very simple pulse scheme which efficiently excites the desired multiquantum NMR coherence and a new acquisition procedure which yields to pure-absorption mode 2D spectra. Experimental spectra for 87Rb in polycrystalline rubidium nitrate illustrate the method.
https://hal-normandie-univ.archives-ouvertes.fr/hal-02280881
Contributor : Christian Fernandez <>
Submitted on : Friday, September 6, 2019 - 4:39:51 PM Last modification on : Monday, January 11, 2021 - 3:30:02 PM