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A new sequence for the MQMAS/HETCOR experiment.

S Steuernagel
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Abstract

Two-dimensional (2D) multiple quantum MAS (magic angle spinning) spectroscopy has been combined with cross-polarisation to obtain a heteronuclear correlation spectrum between a quadrupolar spin-3/2 and a spin-1/2 nucleus. The advantage over the conventional correlation experiment is the increased resolution obtained in the multiple quantum dimension. Pure absorption 2D spectra can be obtained by implementing a zero quantum filter between the evolution of multiple quanta and the subsequent cross-polarisation step. The current experiment shows a considerable improvement in sensitivity compared to a previously introduced sequence.

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S Steuernagel. 1998. A new sequence for the MQMAS/HETCOR experiment.. https://doi.org/10.1016/s0926-2040(98)00034-4

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