A hexagonal columnar packing structure of C7 symmetric supramolecules: a superstructure of a 2:3 complex of heptakis-(6-O-tert-butyldimethylsilyl)-β-cyclodextrin and ethyl acetate by M. Katoh, S. Kohmoto, and K. Kishikawa

Crystal Research and Technology

Cryst. Res. Technol. 41, 1242 (2006) - Abstract -

A hexagonal columnar packing structure of C₇ symmetric supramolecules: a superstructure of a 2:3 complex of heptakis-(6-O-tert-butyldimethylsilyl)-β-cyclodextrin and ethyl acetate

M. Katoh, S. Kohmoto*, and K. Kishikawa*

Quality Materials Science, Graduate School of Science and Technology, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
*Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan

Keywords	cyclodextrin, molecular capsule, clathrate compound, supramolecule, hexagonal columnar structure
PACS	61.66.-f
DOI	10.1002/crat.200610757

The recrystallization of Heptakis[6-O-tert-butyldimethylsilyl)]-β-cyclodextrin (1) from ethyl acetate gave single crystals of 12(ethyl acetate)3 complex. The superstructure of 12(ethyl acetate)3 complex was investigated by 1H NMR spectroscopy, molecular modeling, and single crystal/powder X-ray diffractions. Encapsulation of ethyl acetate molecules with 1 and a unique hexagonal columnar superstructure in its crystal were found.

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