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27 Al{ 1 H} Cross Polarization Triple-Quantum Magic Angle Spinning NMR

1997; American Chemical Society; Volume: 119; Issue: 29 Linguagem: Inglês

10.1021/ja964440v

1943-2984

Christian Fernandéz, Laurent Delevoye, Jean‐Paul Amoureux, David P. Lang, Marek Pruski,

Solid-state spectroscopy and crystallography

An experiment is described that produces multiple-quantum magic angle spinning (MQMAS) NMR spectrum of 27Al via 1H cross polarization (CP). An application of this new technique to the study of a fully hydrated AlPO4-11 aluminophosphate is presented. It is shown that a combination of MQMAS and CPMQMAS provides new insight into the structure of this sample. While MQMAS alone can be used to obtain high-resolution spectra and quantitative information on the distribution of Al sites, CPMQMAS allows one to establish the positions of water molecules within the AlPO4-11 framework.