title: 207Pb NMR of Solid Solutions of Divalent Metal Nitrates.
abstract: 207Pb NMR spectra of mixed crystals of anhydrous lead and strontium nitrate show up to 13 lines, arising from lead ions with 0-12 Pb(2+) nearest-neighbor cations replaced by Sr(2+). The shifted lines are further split by the multiplicity of inequivalent nearest-neighbor replacements. The average shift per Sr(2+) ion is 21.8 ppm. Similar but somewhat smaller effects are seen in [Pb,Ba](NO(3))(2) mixed crystals. The intensities of the resonances can be fit to Monte Carlo models of Pb(2+) and Sr(2+) ion distributions and are consistent with like nearest-neighbor pairs being 120 J/mol lower in energy than unlike pairs.
authors.affiliation: Department of Chemistry, University of Nebraska at Lincoln, Lincoln, Nebraska 68588-0304.
authors.forename: Young-Sik
authors.initials: YS
authors.lastname: Kye
authors.forename: Gerard S.
authors.initials: GS
authors.lastname: Harbison