EXPERIMENTAL DETECTION OF MULTIPLE-QUANTUM COHERENCE TRANSFER IN COUPLED SPIN SOLIDS BY MULTIDIMENSIONAL NMR EXPERIMENTS

Three-dimensional multiple-quantum coherence experiments in coupled 1/ 2 spin solids have been designed to directly detect coherence transfer s among all the accessible coherence orders during irradiation. The ex periments have been performed on the coupled four-spin polycrystalline sample rachloronaphthalene-bis(hexachlorocyclopentadiene) adduct. The experimental results reveal how the coherences transfer in this spin system, which support the theoretically deduced selection rules and ca n be used to assist more precise description of multiple-quantum coher ence dynamics.