Hydrogen Bond ‘Triple Hooks’ in an Inclusion Crystal of Cholanamide with Aniline. Structural Difference of Inclusion Crystals of Cholic Acid and Cholanamide with Same Guest

Kazuki Sada Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-11, Japan

Yoshiaki Matsuura Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-11, Japan

Mikiji Miyata Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-11, Japan; Material and Life Science, Faculty of Engineering, Osaka University, Yamadaoka, Suita, Osaka, 565, Japan

Abstract

Crystal structure of an inclusion crystal of cholanamide with aniline is described. Comparison of the crystal structure with that of the cholic acid clathrate reveals both hosts have quite similar assembly mode. However, the most smking difference is hydrogen bonding. Aniline is included in host lattice of cholanamide by triple hydrogen bonds, whereas in that of cholic acid by double weak hydrogen bonds. Difference of the molecular structure between them gives raise to change the host-guest hydrogen bonding.

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Hydrogen Bond ‘Triple Hooks’ in an Inclusion Crystal of Cholanamide with Aniline. Structural Difference of Inclusion Crystals of Cholic Acid and Cholanamide with Same Guest

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Hydrogen Bond ‘Triple Hooks’ in an Inclusion Crystal of Cholanamide with Aniline. Structural Difference of Inclusion Crystals of Cholic Acid and Cholanamide with Same Guest

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