ISSN:
1572-8927
Keywords:
ion solvation
;
lithium isotopes
;
lithium halides
;
Raman spectra
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The Raman spectra of saturated solutions of6LiCl and7LiCl have been decomposed into Gaussian components, one of which is a polarized band that occurs at 360 cm−1 when the ion is6Li+ and shifts to 335 cm−1 when the ion is7Li+. Equivalent bands occur in the spectra of saturated solutions of6LiBr and7LiBr at 343 and 320 cm−1, respectively. These bands are assigned to solvent-separated ion aggregates. The Raman spectra of 8.0 and 3.5 m solutions of the isotopic lithium chlorides have been decomposed into five Gaussian components, three of which are assigned to water librations. In addition, there is a polarized band at 440 cm−1 independent of the lithium isotope used, and a depolarized band which occurs at 385 cm−1 in the6LiCl solutions and 360 cm−1 in the7LiCl solutions. We interpret these two additional bands as theA 1 andF 2 stretching modes of Li+ tetrahedrally solvated by water molecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00645883
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