Studies on the Interaction between Long Chain Alcohols and Alkyl Sulf ates. II. Molecular Association between Dodecyl Alcohol and Dodecyl Sulfate of Divalent Metals
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概要
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Molecular interaction between dodecyl alcohol and dodecyl sulfate of divalent metal cations such as Mg<SUP>2+</SUP>, Ca<SUP>2+</SUP>, Sr<SUP>2+</SUP>, Ba<SUP>2+</SUP>, Mn<SUP>2+</SUP>, Co<SUP>2+</SUP>, Ni<SUP>2+</SUP>, and Cu<SUP>2+</SUP> was studied by measurement of heat of complex formation, differential thermal analysis and infrared spectroscopy. It was found that magnesium, manganese, cobalt, nickel, and copper dodecyl sulfates formed two or three kinds of complexes with dodecyl alcohol, differing in composition depending on temperature. On the other hand, no evidence of complex formation could be found by these experimental techniques for calcium, strontium and barium dodecyl sulfates, all of which are very small in solubility into water. For the former class of metal dodecyl sulfates the composition of complex was 3.5–4.0 in molar ratio of alcohol to sulfate at temperature below the melting point of alcohol, while it was 5.0–6.0 at temperature above it. The heat of complex formation above the melting point of alcohol was −40–−44 kcal/mol-sulfate. Two or three characteristic absorption bands could be found over the range 3200–3500 cm<SUP>−1</SUP>, suggesting that the complex formation is due to hydrogen bonding between two components.
- 公益社団法人 日本化学会の論文
著者
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Matuura Ryohei
Department of Chemistry Faculty of Science Kyushu University
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Moroi Yoshikiyo
Department of Chemistry, Faculty of Science, Kyushu University
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Motomura Kinshi
Department of Chemistry, Faculty of Science, Kyushu University
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