Pb NMR of Crystalline Lead Compounds

Pb NMR spectra of PbZi03 obtained under MAS conditions (upper) and from a two-rotor-cycle 2D PASS experiment (lower) showing the simpliheation obtained by this method giving essentially an isotropic spectrum with no sidebands. From Vogt et al. (2000), by permission of the copyright owner. 

The location of the lead cations in a series of lead-containing A, X and Y-zeolites and their mobility on exposure to water have been studied by a combination of ° Pb NMR and Al- ° Pb double resonance (SEDOR) experiments (Niessen et al. 2001). Systematic changes in the ° Pb relaxation time and the average chemical shift with water content suggest that the chemical environment of the lead cations is strongly affected by the sorption of water and supports a 2-site exchange model for the formation of Pb OH entities (Niessen et al. 2001). 

The ° Pb NMR chemical shifts for a number of lead compounds are collected in Table 9.12. 

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Pb NMR of Crystalline Lead Compounds Pb NMR of Lead-Containing Glasses ° Pb in Sol-Gel Prepared Ceramics... 

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