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Determination of 207Pb2+ chemical shift tensors from precise powder lineshape analysis

✍ Scribed by Günther Neue; Cecil Dybowski; Matthew L. Smith; Mark A. Hepp; Dale L. Perry

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
812 KB
Volume
6
Category
Article
ISSN
0926-2040

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✦ Synopsis

207Pb solid state NMR powder spectra at 296 K are presented for PbSO4, PbMoO4, PbCrO4, PbCO3, PbTiO3, PbZrO3, Pb(NO3)2, Pb(SCN)2, and PbS. Analysis for principal values of the anisotropic chemical shift tensors of the generally very broad spectra included the frequency dependent excitation of the pulse sequence used. Commonly used solid and liquid secondary shift standards for lead were studied with high precision as a function of temperature between 295 K and 315 K to establish a clean 207Pb shift scale. Errors in the existing literature are discussed.

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