| Abstract
| - Using 207Pb magic angle spinning and static NMR,we have resolved and assigned different lead sites incrystalline lead oxides and lead silicates to their isotropic chemicalshifts. Chemical shift anisotropies were alsoobtained for lead sites from the intensities of spinning sidebands.Empirical correlations between 207Pbisotropicchemical shifts and structural parameters are proposed. For ioniccompounds, we show good correlations betweenchemical shift and coordination number or mean bond length. Formore covalent compounds, the best empiricalcorrelation has been obtained by using the degree of oxygen s−phybridization and second neighbor electronegativitysimilar to that previously used to characterize 29Sishifts in aluminosilicates. The Pb2+ chemical shiftanisotropiesincrease with more positive chemical shifts. These correlations,established for simple crystalline compounds, shouldallow better characterization of lead environments in disorderedmaterials of complex composition.
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