Accession Number : AD0694244

Title :   ON THE SOLVATION OF IONS IN DIPOLAR APROTIC SOLVENTS. CHLORINE-35 NUCLEAR MAGNETIC RESONANCE STUDIES OF CHLORIDE ION IN MIXED SOLVENTS,

Corporate Author : MASSACHUSETTS UNIV AMHERST DEPT OF CHEMISTRY

Personal Author(s) : Stengle,Thomas R. ; Langford,Cooper H.

Report Date : 10 APR 1969

Pagination or Media Count : 4

Abstract : The chemical shift of the Cl-35 NMR signal was used as a probe for the investigation of the solvation of the chloride ion in solvent mixtures of water-acetonitrile and water-dimethyl sulfoxide. First it was shown that the chemical shift is independent of the nature of the cation and the salt concentration; that is, the counter ion has no effect on the experimental parameter. The chemical shift then should reflect the composition of the solvation sphere. In acetonitrile-water mixtures, chloride ion shows a strong preference for water; presumably the result of hydrogen bonding between H2O and Cl(-). In DMSO-water mixtures however, there appears to be nearly equal competition for Cl(-) solvation sites. A possible explanation of this unexpected behavior is advanced. (Author)

Descriptors :   (*CHLORINE COMPOUNDS, *NUCLEAR MAGNETIC RESONANCE), IONS, SOLVENTS, ORGANIC SOLVENTS, WATER, ACETONITRILE

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE