Study of intermolecular interactions in aqueous solutions by millimeter spectroscopy |
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Authors: | Yu. I. Khurgin V. A. Kudryashova V. A. Zavizion |
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Affiliation: | (1) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913 Moscow, Russian Federation;(2) Institute of Radioengineering and Electronics, Russian Academy of Sciences, 1 pl. Vvedenskogo, 141120 Fryazino, Moscow Region, Russian Federation |
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Abstract: | The absorption of millimeter electromagnetic radiation (v=1.4, 1.71, and 5 cm−1) by aqueous solutions of glycine (pH 6.1–6.2) in the concentration range of 0.5–2.5 mol L−1 was measured. It was found that the absorbing ability of the water present in the solutions, is higher than that of pure water. This phenomenon is explained by the presence of a center of negative hydration in the structure of the glycine zwitterion, which results in an increase in the rotational mobility of water molecules immobilized in the hydrate shell of the glycine zwitterion. For Part 5, see Ref. 1. Deceased. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1305–1307, July, 1997. |
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Keywords: | glycine zwitterion negative and positive hydration aqueous solution absorption of millimeter radiation |
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