Molecular recognition in the formation of conglomerate crystal. 2. The role of arenesulfonic acid in the conglomerate crystals of amino acid salts.
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概要
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The structures of conglomerate crystals, <I>p</I>-chlorobenzenesulfonic acid salt of L-alanine, <I>p</I>-toluenesulfonic acid salt of L-serine, and benzenesulfonic acid salt of L-leucine, were determined by X-ray analysis. The crystals are built up of repeating units consisting of two amine components and two acid components to form a helical column by hydrogen bonds. The arrangements of the arenesulfonic acids are found to be similar to each other in these systems. Moreover, the arrangements have similarity to those of cinnamic acid in the crystals of cinnamic acid salts of (<I>R</I>)-1-phenylethylamine and of (<I>R</I>)-1-(4-isopropylphenyl)ethylamine, which are also conglomerates. These results suggest that our proposed criteria for the choice of an achiral derivatizing agent in the transformation of a racemic compound into a conglomerate crystal is appropriate.
- 公益社団法人 日本化学会の論文
著者
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OHASHI Yuji
Department of Chemistry and Materials Science Tokyo Institute of Technology
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Saigo Kazuhiko
Department Of Chemistry And Biotechnology Faculty Of Engineering The University Of Tokyo
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Kimoto Hiroki
Department Of Applied Chemistry National Defense Academy
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Hasegawa Masaki
Department Of Materials Science And Technology Faculty Of Engineering Toin University Of Yokohama
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Saigo Kazuhiko
Department of Applied Chemistry, Faculty of Engineering Saitama University
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