AN NMR STUDY OF THE POLARIZATION OF WATER MOLECULES BY DIAMAGNETIC IONS
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Date
1963
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Ohio State University
Abstract
“Shoolery and $Alder,^{1}$ and $Hindman^{2}$ have investigated the effects of diamagnetic salts on the proton magnetic resonance of water and have interpreted their chemical shift data in terms of two counteracting effects: the breakdown of the hydrogen-bonded structure of water and the ability of the ions to polarize the water molecules. In order to understand the polarization effect more quantitatively, the proton magnetic resonance of water has now been examined under conditions where the hydrogen-bonded structure of water is essentially broken down in the absence of salt. It is suggested that the addition of salts then produces predominantly a polarization effect. Observed chemical shift variations of the water resonance with concentration of univalent ions in dilute solutions of water in acetone are consistent with the picture. These results will be discussed in the light of a quantitative treatment recently developed to a compute these field $effects.^{3}$”
Description
$^{1}$ J.N. Shoolery and B.J. Alder, J. Chem. Phys. 23, 805(1955) $^{2}$ J.C. Hindman, J. Chem. Phys, 36, 1000 (1962) $^{3}$ S.I. Chan, R.T. Iwarnasa and T.P. Das, Bull, Am. Phys, Soc. 8, 329 (1963)
Author Institution: Department of Chemistry, University of California
Author Institution: Department of Chemistry, University of California