Pb Chemical Shifts and Structure

1 Correlations between Pb chemical shifts and structure. On the basis of the Pb NMR spectra of a number of lead oxides and silicates, Fayon et al. (1997) have deduced empirical relationships between 8iso and structural parameters. Provided 

For more covalent compounds, the best empirical correlation was obtained by taking into account the degree of oxygen s-p hybridization p, given by 

Attempts to establish relationships between the ° Pb CSA values of lead compounds and the average deviation of the bond angles or bond lengths from those of an ideal polyhedron have proved less successful (Fayon et al. 1997). 

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