The librational spectra of water and heavy water in crystalline salt hydrates

https://doi.org/10.1016/0371-1951(61)80048-9Get rights and content

Abstract

Infrared spectra are reported of nine mono- and dihydrates of alkali halides and alkaline earth halides. These spectra in the 300–600 cm−1 region are interpreted as arising from the librational modes of the bound water molecules as shown unambiguously by the frequency changes on substitution of deuterium oxide. Potential constants for this motion are given. Samples were prepared by evaporation of salt films in situ, and the method is seen to be of value for studying the limits of phase stability of unknown hydrates and related compounds. The number of bands observed in this region indicates for all cases studied the number of water molecules with different crystalline environments.

References (20)

  • F.A. Miller et al.

    Spectrochim. Acta

    (1960)
  • G.C. Pimentel et al.
    (1960)
  • J.W. McGrath et al.

    J. Chem. Phys.

    (1961)
  • P.J. Lucchesi et al.

    J. Am. Chem. Soc.

    (1956)
  • W. Lyon et al.

    Phys. Rev.

    (1942)
  • E. Hartert et al.

    Z. Electrochem.

    (1956)
  • C. Duval et al.

    J. Chim. Phys.

    (1953)
  • P.A. Giguère et al.

    Can. J. Chem.

    (1956)
  • (1930)
  • J. Lecomte

    J. chim. phys.

    (1953)
There are more references available in the full text version of this article.

Cited by (82)

  • Spectral comparison of heavily hydrated salts with disrupted terrains on Europa

    2005, Icarus
    Citation Excerpt :

    These include features of moderate strength near 1.65, 1.8, and 2.2 μm. An additional absorption common to the hydrates at 1.35 μm arises from the combination of low frequency lattice modes with the asymmetric OH stretching mode (Van der Elsken and Robinson, 1961; Hunt et al., 1971a, 1971b; Crowley, 1991; Dalton and Clark, 1999). This is manifested as a gentle indentation on the short-wavelength shoulder of the 1.5-μm absorption feature in the spectra of Figs. 7–14.

  • X-ray and photo-luminophors based on SiO<inf>2</inf>UO<inf>2</inf><sup>2+</sup> adsorption systems

    1995, Colloids and Surfaces A: Physicochemical and Engineering Aspects
View all citing articles on Scopus
1

Present address: Laboratorium voor Fysische Chemie, Der Universiteit van Amsterdam, The Netherlands.

View full text