Role of Hydrogen-Bond Network in the Formation of a Conglomerate.
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- KINBARA Kazushi
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo
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- SAIGO Kazuhiko
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo
Bibliographic Information
- Other Title
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- ラセミ混合物(コングロメレート)結晶生成における水素結合ネットワークの役割
- ラセミ コンゴウブツ コングロメレート ケッショウ セイセイ ニ オケル スイ
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Abstract
X-ray crystallographic studies were carried out for conglomerate salts, racemic-compound salts, and enantiomerically pure salts of chiral primary amines with achiral mono-carboxylic acids. The crystal structures of the conglomerate salts revealed that these crystals can be regarded as being a supramolecular assembly of a characteristic columnar hydrogen-bond network, in which the ammonium cations and the carboxylate anions are aligned around a twofold screw axis (21-column) . On the other hand, the crystal structures of the racemic-compound salts could be roughly classified into two types. One type is a crystal consisting of 21columns; the other type is a crystal consisting of a different type of columnar hydrogen-bond network, in which the ammonium cations and the carboxylate anions are related by inversion centers (i-column) .These results suggest that both the formation and the assembly of 21columns are essential in the formation of conglomerates for these salts.
Journal
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- Nihon Kessho Gakkaishi
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Nihon Kessho Gakkaishi 38 (6), 414-420, 1996
The Crystallographic Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204087768832
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- NII Article ID
- 10002025502
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- NII Book ID
- AN00188364
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- ISSN
- 18845576
- 03694585
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- NDL BIB ID
- 4170866
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed