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A Lithium‐6 CP/MAS Standard
Author(s) -
Penner Glenn H.,
Hutzal Jennifer
Publication year - 1997
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(199704)35:4<222::aid-omr70>3.0.co;2-0
Subject(s) - chemistry , asymmetry , spinning , lithium (medication) , isotopes of lithium , anisotropy , magic angle , analytical chemistry (journal) , magic angle spinning , coupling constant , spectral line , hydrate , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , optics , ion , stereochemistry , chromatography , physics , medicine , organic chemistry , quantum mechanics , particle physics , astronomy , ion exchange , polymer chemistry , endocrinology
The 6 Li cross polarization magic angle spinning (CP/MAS) spectra of several commercially available lithium‐containing solids were obtained. Lithium acetate hydrate is evidently the sample of choice for setting up the 6 Li{ 1 H} CP/MAS experiment. A 6 Li spectrum of the sample without spinning yields a Pake doublet that can be best simulated with a 6 Li quadrupolar coupling constant, χ( 6 Li), of 2.5±0.2 kHz and an asymmetry parameter, η, of less than 0.2. A noticeable asymmetry in the intensities of the two halves of the powder line shape, enhanced by increasing the static magnetic field by a factor of 2.5, is probably due to the effects of chemical shift anisotropy. © 1997 by John Wiley & Sons, Ltd.