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      Perturbations of water by alkali halide ions measured using multivariate Raman curve resolution.

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          Abstract

          Polarized Raman spectroscopy, combined with multivariate curve resolution (MCR), is used to measure the influence of dilute alkali halide ions on the OH stretch vibrational band of water. The frequency and integrated intensity of the resulting hydration shell OH bands are found to increase with increasing anion size. Comparisons of results obtained from salt solutions in H(2)O and HOD/D(2)O imply that ion-water interactions reduce the influence of resonance coupling on the OH stretch band of H(2)O. Polarized Raman results indicate that the hydration shell of F(-) gives rise to a nearly perfectly polarized OH stretch band, while large anions produce larger depolarization.

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          Author and article information

          Journal
          J Phys Chem B
          The journal of physical chemistry. B
          American Chemical Society (ACS)
          1520-6106
          1520-5207
          Feb 19 2009
          : 113
          : 7
          Affiliations
          [1 ] Purdue University, West Lafayette, Indiana.
          Article
          10.1021/jp808732s
          10.1021/jp808732s
          19199691
          24ef3d96-a790-4a1d-93eb-e6aa394146e9
          History

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