Results of 13 C, 17 O-rotational-echo, double-resonance NMR (REDOR) and 13 C, 17 O-rotational-echo, adiabatic-passage, double-resonance NMR (REAPDOR) experiments on asparagine monohydrate are reported. The measurement of carbon−oxygen distances in a solid sample with magic-angle spinning NMR and 17 O-enriched water is illustrated. These results show that determining the relative location of bound water in solids is possible and suggest that measuring distances between spin- 1 / 2 nuclei and other chemical types of oxygen is feasible.
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Chopin et al. (1998) studied this question.
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