Aggregation of p-Acetanisidide Molecules in the Under- and Super-saturated Solution and Its Effect on Crystallization
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概要
- 論文の詳細を見る
The aggregation behavior of solute molecules in under- and supersaturated solutions was investigated using an organic compound p-acetanisidide (PAC) as a model compound and NMR method. The aggregation behavior was discussed by comparing the structure of aggregates with that of a single crystal determined by X-ray crystallographic analysis. And also, the relationship between the aggregation and the nucleation was discussed. PAC molecules were found in aggregates before nucleation, not only in the super-saturated solution but also in the under-saturated solution. The growth of aggregates in the under-saturated solution was slower than that in the super-saturated solution. The local structures observed in the aggregates were intermolecular hydrogen bonding between N-H hydrogen and C=O oxygen, and the intra- and intermolecular access of methoxy group hydrogen to (orto-) hydrogen on a benzene ring within a distance of 4 Å. These interactions were also observed between adjacent PAC molecules in crystal. The whole structure of aggregates, however, was not the same as that of the crystal. The formation of aggregates before nucleation in the under-saturation condition suppressed the nucleation, and the formation of aggregates in the super-saturation condition accelerated the nucleation.
- 社団法人 化学工学会の論文
- 2002-11-01
著者
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SAITO AKIRA
Department of Pediatrics, Hirosaki University School of Medicine
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Azuma Masayuki
Department of Agricultural Chemistry, Faculty of Agriculture, The University of Tokyo
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Ooshima Hiroshi
Dep. Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univ.
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Ooshima H
Osaka City Univ. Osaka Jpn
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Ooshima Hiroshi
Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers
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Ooshima Hiroshi
Department Of Applied And Bioapplied Chemistry Graduate School Of Engineering Osaka City University
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Igarashi K
Dep. Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univ.
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Igarashi Koichi
Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers
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Igarashi Koichi
Department Of Applied And Bioapplied Chemistry Graduate School Of Engineering Osaka City University
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Igarashi Koichi
Biology Research Laboratories:research And Development Division:tekada Chemical Industries Ltd.
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Igarashi K
Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers
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Azuma M
Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers
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Azuma Masayuki
Second Department Of Oral And Maxillofacial Surgery Tokushima University School Of Dentistry
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Igarashi Koichi
Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers
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Saito A
Department Of Applied And Bioapplied Chemistry Graduate School Of Engineering Osaka City University
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Saito Akira
Department Of Pathology Juntendo University Urayasu Hospital
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Saito Akira
Department of Biological Chemistry, Yamaguchi University
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Saito Akira
Department of Applied and Bioapplied Chemistry, Graduate School of Engineering, Osaka City University
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