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Resolution enhancement in solid‐state MQ‐MAS experiments achieved by composite decoupling
Author(s) -
Lacassagne Vincent,
Florian Pierre,
Montouillout Valérie,
Gervais Christel,
Babonneau Florence,
Massiot Dominique
Publication year - 1998
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199812)36:12<956::aid-omr424>3.0.co;2-7
Subject(s) - heteronuclear molecule , chemistry , solid state nuclear magnetic resonance , decoupling (probability) , composite number , magnetic dipole–dipole interaction , magic angle , spinning , dipole , magic angle spinning , solid state , molecular physics , quantum , analytical chemistry (journal) , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , quantum mechanics , physics , stereochemistry , composite material , chromatography , polymer chemistry , organic chemistry , materials science , control engineering , engineering
It is shown that, in the presence of strong heteronucleardipolar couplings, resolution can be significantly improved insolid‐state multiple quantum magic angle spinning NMRexperiments on half integer quadrupolar nuclei by applying compositedecoupling schemes during triple quantum evolution and acquisition.Reduction of the effects of heteronuclear dipolar coupling during themultiple quantum evolution period is shown to lead to improvedresolution of 27 Al sites in crystalline chiolite(Na 5 Al 3 F 14 ) and 11 B sites in a polyborazilene sample. © John Wiley& Sons, Ltd.