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Triple-quantum correlation NMR experiments in solids using J-couplings.

Franck Fayon·Claire Roiland·Lyndon Emsley·Dominique Massiot
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Abstract

We show that triple-quantum-single-quantum (TQ-SQ) correlation spectra of crystalline and disordered solids can be obtained under MAS using pulse sequences based on through-bond J-couplings. The feasibility of the experiments in coupled spin-1/2 systems is demonstrated for fully 13C-labelled L-alanine and Pb3P4O13 crystalline compounds, considered as model three-spin and four-spin systems, respectively. In the case of phosphate glasses, we show that the obtained TQ-SQ correlation spectra provide an improved description of the glass forming network connectivities and of the chain length distribution in the disordered network.

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Franck Fayon, Claire Roiland, Lyndon Emsley, Dominique Massiot. 2005-11-22. Triple-quantum correlation NMR experiments in solids using J-couplings.. https://doi.org/10.1016/j.jmr.2005.11.002

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