title: Crystal structures of cyclomaltohexaose (alpha-cyclodextrin) complexes with p-bromophenol and m-bromophenol.
abstract: Crystal structures of cyclomaltohexose (alpha-cyclodextrin) complexes with p-bromophenol and m-bromophenol have been determined by single-crystal X-ray diffraction. The space group of the alpha-cyclodextrin-p-bromophenol complex is P2(1)2(1)2(1) with unit cell dimensions of a = 15.318(3), b = 24.733(3), c = 13.457(2) A, and that of the alpha-cyclodextrin-m-bromophenol complex is P2(1)2(1)2 with unit cell dimensions of a = 25.858(7), b = 27.263(8), c = 8.145(3) A. In crystals, the alpha-cyclodextrin-p-bromophenol complex and the alpha-cyclodextrin-m-bromophenol complex form a layer-type and a channel-type molecular packing structure, respectively. The intermolecular hydrogen-bond interactions of the hydroxyl groups of bromophenols are closely related to the molecular packing structure.
authors: Department of Biotechnology and Life Science, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Japan. kamitori@cc.tuat.ac.jp
authors: S
authors: S
authors: Kamitori
authors: Y
authors: Y
authors: Toyama
authors: O
authors: O
authors: Matsuzaka
mesh_terms: D002236:Carbohydrate Conformation; D003460:Crystallization; D018360:Crystallography, X-Ray; D003505:Cyclodextrins / Q000737:chemistry*; D006860:Hydrogen Bonding; D046911:Macromolecular Substances; D008958:Models, Molecular; D010636:Phenols / Q000737:chemistry*; D047391:alpha-Cyclodextrins
chemical_list: D003505:Cyclodextrins; D046911:Macromolecular Substances; D010636:Phenols; D047391:alpha-Cyclodextrins; C032037:4-bromophenol; C040659:3-bromophenol; C032613:alpha-cyclodextrin