Solid-state NMR studies of 17O-enriched pyrophosphates

For the first time, 17O NMR studies were performed on 17O-enriched crystalline pyrophosphates (magnesium-, sodium- and barium-pyrophosphate) by means of triple-quantum magic-angle spinning (3QMAS) and double-rotation (DOR) in the high external field of 17.6 T. Oxygen atoms in bridging positions (P–O...

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Bibliographic Details
Published inSolid state nuclear magnetic resonance Vol. 30; no. 2; pp. 69 - 74
Main Authors Prochnow, Daniel, Grimmer, Arnd-Rüdiger, Freude, Dieter
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier Inc 01.09.2006
Subjects
17O
Crystalline pyrophosphates
Double-rotation
Inorganic phosphates
Multiple quantum MAS
NMR
Double-rotation
Crystalline pyrophosphates
17O
NMR
Inorganic phosphates
Multiple quantum MAS
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Summary:For the first time, 17O NMR studies were performed on 17O-enriched crystalline pyrophosphates (magnesium-, sodium- and barium-pyrophosphate) by means of triple-quantum magic-angle spinning (3QMAS) and double-rotation (DOR) in the high external field of 17.6 T. Oxygen atoms in bridging positions (P–O B–P) exhibit a significant higher quadrupole coupling constant compared to oxygen atoms in terminal positions (P–O T). With increasing cationic radius a higher value of the chemical shift of the terminal oxygen atoms is observed.
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ISSN:0926-2040
1527-3326
DOI:10.1016/j.ssnmr.2006.02.004