2D five quantum MAS NMR using rotationally induced coherence transfer

Rotation-induced 5Q↔1Q coherence transfer (RIACT) for 5Q MAS NMR experiments is shown unequivocally for 17 O ( I=5/2) for compounds with quadrupolar interactions in the range ∼3–7.3 MHz. 5Q RIACT has distinct advantages over the methods used to excite 5Q MAS NMR hitherto through much reduced sensiti...

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Bibliographic Details
Published inChemical physics letters Vol. 306; no. 5; pp. 297 - 302
Main Authors Mildner, T, Smith, M.E, Dupree, R
Format Journal Article
LanguageEnglish
Published Elsevier B.V 18.06.1999
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Summary:Rotation-induced 5Q↔1Q coherence transfer (RIACT) for 5Q MAS NMR experiments is shown unequivocally for 17 O ( I=5/2) for compounds with quadrupolar interactions in the range ∼3–7.3 MHz. 5Q RIACT has distinct advantages over the methods used to excite 5Q MAS NMR hitherto through much reduced sensitivity to the electric field gradient. It is also less sensitive to spinning speed than 3Q RIACT on an I=5/2 nucleus whilst producing similar signal intensity. The 2D 5Q RIACT 17 O spectrum of zeolite Na–A is better resolved than the previously published higher field 3Q spectrum with all three sites being clearly visible.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(99)00457-1