Studies on the aqueous solutions of guanidinium salts. XIII. NMR study of the interactions between guanidinium salt and tetraalkylammonium salts in water.

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概要

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• The quadrupole relaxation of <SUP>14</SUP>N nucleus of guanidinium bromide has been measured in aqueous ternary solutions containing symmetrical tetraalkylammonium salts by the <SUP>1</SUP>H NMR method. By means of Pople's line shape analysis and the Debye-Einstein equation, it has been confirmed that no complex formation takes place in the aqueous ternary solution containing symmetrical tetraalkylammonium salts. The rotational correlation time of the guanidinium ion is linearly related to the absolute viscosity of the solutions containing the homologous series of alkylammonium salts. A similar relationship was obtained for the ternary solutions with sugars or polyethylene glycols. This suggests that the correlation time depends on the microviscosity around the guanidinium ion.

• 公益社団法人 日本化学会の論文

著者

• Kuroda Yoshihiro

  Faculty Of Pharmaceutical Sciences Kyoto University

• NAKAGAKI MASAYUKI

  Faculty of Pharmaceutical Sciences, Kyoto University

• Miyajima Koichiro

  Faculty Of Pharmaceutical Science Kyoto University

• Nakagaki Masayuki

  Faculty of Living Science Osaka City University

• Yoshida Hiromitsu

  Faculty of Pharmaceutical Sciences, Kyoto University

• Yoshida Hiromitsu

  Faculty of Pharmaceutical Sciences of Kyoto University

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