Email this article Ion pairing in H2O and D2O solutions of lead nitrate, as determined with 207Pb NMR spectroscopy
- Authors: Alkan F.1, Small T.1, Bai S.1, Dominowski A.1, Dybowski C.1
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Affiliations:
- Department of Chemistry and Biochemistry
- Issue: Vol 57, No 2 (2016)
- Pages: 369-375
- Section: Article
- URL: https://journal-vniispk.ru/0022-4766/article/view/159507
- DOI: https://doi.org/10.1134/S0022476616020189
- ID: 159507
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Abstract
The temperature and concentration dependences of 207Pb NMR chemical shifts of Pb(NO3)2 in D2O are reported. The results are analyzed in terms of exchange between a solvated lead ion and the Pb(NO3)+ contact-ion pair. Predictions of the chemical shift difference between the aquated ion and contact-ion pair are carried out for the gas-phase entities and for the solvated species with a DFT calculation. Previously reported data on 207Pb NMR chemical shifts of Pb(NO3)2 in H2O are reevaluated. From the analysis, the enthalpy of dissociation of the contact-ion pair is found to be–42.3±1.0 kJ/mol.
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About the authors
F. Alkan
Department of Chemistry and Biochemistry
Email: dybowski@udel.edu
United States, Newark, Delaware, 19716
T. Small
Department of Chemistry and Biochemistry
Email: dybowski@udel.edu
United States, Newark, Delaware, 19716
S. Bai
Department of Chemistry and Biochemistry
Email: dybowski@udel.edu
United States, Newark, Delaware, 19716
A. Dominowski
Department of Chemistry and Biochemistry
Email: dybowski@udel.edu
United States, Newark, Delaware, 19716
C. Dybowski
Department of Chemistry and Biochemistry
Author for correspondence.
Email: dybowski@udel.edu
United States, Newark, Delaware, 19716
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