Intra- and Intermolecular Interactions in and between Water Molecules in Calcium Sulfate Dihydrate

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Abstract
A study of the infrared spectra of varyingly deuterated thin films of gypsum has afforded information on the relative importance of intra- and intermolecular interactions in determining the stretching bands of water in the spectrum. This study has indicated that the internal forces in water are different for water in gypsum than they are for water in the vapor. It is further indicated that the water molecule in gypsum is much like the average molecule expected to exist in the liquid state.