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Spectroscopic studies of ionic solvation. XVIII. Solvation of the lithium ion in acetone and acetone-nitromethane mixtures

Spectroscopic studies of ionic solvation. XVIII. Solvation of the lithium ion in acetone and... Solvation of the lithium ion by acetone was studied in acetone-nitromethane solutions by Raman, infrared, and7Li and35Cl NMR spectroscopic techniques. It was confirmed that the 390-cm−1 IR acetone band is split by the lithium ion and that a 369-cm−1 IR band, attributed by other authors to Li+-nitromethane vibration, is due to the vibration of acetone in the lithium inner solvation shell. The frequency of the Li+-nitromethane vibrational band is strongly anion dependent due to contact-ion-pair formation. Several different techniques indicate that Li+ is solvated by four acetone molecules, and approximate equilibrium-constant values for the stepwise solvation reaction were calculated. The influence of weak complexing agents on Li+ ClO 4 − ion-pair formation was investigated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Solution Chemistry Springer Journals

Spectroscopic studies of ionic solvation. XVIII. Solvation of the lithium ion in acetone and acetone-nitromethane mixtures

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References (13)

Publisher
Springer Journals
Copyright
Copyright
Subject
Chemistry; Physical Chemistry; Industrial Chemistry/Chemical Engineering; Geochemistry; Oceanography; Inorganic Chemistry; Condensed Matter Physics
ISSN
0095-9782
eISSN
1572-8927
DOI
10.1007/BF00645576
Publisher site
See Article on Publisher Site

Abstract

Solvation of the lithium ion by acetone was studied in acetone-nitromethane solutions by Raman, infrared, and7Li and35Cl NMR spectroscopic techniques. It was confirmed that the 390-cm−1 IR acetone band is split by the lithium ion and that a 369-cm−1 IR band, attributed by other authors to Li+-nitromethane vibration, is due to the vibration of acetone in the lithium inner solvation shell. The frequency of the Li+-nitromethane vibrational band is strongly anion dependent due to contact-ion-pair formation. Several different techniques indicate that Li+ is solvated by four acetone molecules, and approximate equilibrium-constant values for the stepwise solvation reaction were calculated. The influence of weak complexing agents on Li+ ClO 4 − ion-pair formation was investigated.

Journal

Journal of Solution Chemistry – Springer Journals

Published: Oct 29, 2004

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