Solubilities and dissolution states of a series of symmetrical tetraalkylammonium salts in Water.
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概要
- 論文の詳細を見る
The solubilities of a series of symmetrical tetraalkylammonium salts, R<SUB>4</SUB>NX (R=CH<SUB>3</SUB>–<I>n</I>-C<SUB>8</SUB>H<SUB>17</SUB>, including <I>i</I>-C<SUB>4</SUB>H<SUB>9</SUB> and <I>i</I>-C<SUB>5</SUB>H<SUB>11</SUB>; X=Cl, Br, I, NO<SUB>3</SUB>, and ClO<SUB>4</SUB>), in water have been determined over the temperature range between 5 and 45 °C. The solubilities of these salts were found to be strongly dependent upon both the chain length of R of the R<SUB>4</SUB>N<SUP>+</SUP> cation and upon the partial molar volume of the X<SUP>−</SUP> anion. It has been concluded that these solubilities are closely related with the stability of a "cage-like" water structure, which is presumably formed around the R<SUB>4</SUB>N<SUP>+</SUP> cation in the solution. A thermodynamic interpretation of the solubility of the R<SUB>4</SUB>NX salts was made by using some thermodynamic properties obtained by a differential scanning calorimetry, together with the enthalpy of the solution calculated from the temperature dependence of the solubility.
- 公益社団法人 日本化学会の論文
著者
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Nakayama Haruo
Division Of Materials Science And Chemical Engineering Faculty Of Engineering Yokohama National Univ
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Kuwata Hiromi
Division of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University
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Yamamoto Norikazu
Division of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University
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Akagi Yutaka
Division of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University
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Matsui Hiroshi
The Radio Isotope Center, Yokohama National University
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