Crystal structure of cyclomaltoheptaose (β-cyclodextrin) complexes with p-aminobenzoic acid and o-aminobenzoic acid

被引：25

作者：

Zhang, Yimin ^{[1
]}

Yu, Shanbao ^{[1
]}

Bao, Feng ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

CARBOHYDRATE RESEARCH | 2008年 / 343卷 / 14期

关键词：

beta-cyclodextrin; crystal structures; inclusion complex; hydrogen bonds;

D O I：

10.1016/j.carres.2008.06.023

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Crystal structures of cyclomaltoheptaose (beta-cyclodextrin) complexes with p-aminobenzoic acid and o-aminobenzoic acid have been determined by single-crystal X-ray diffraction. The space group of the beta-cyclodextrin-p-aminobenzoic acid complex is P2(1) with a host:guest stoichiometry of 1:1, and that of the beta-cyclodexti-in-o-aminobenzoic acid complex is P1 with a stoichiometry of 2:3. The different structures of the guest molecules lead to the different molecular packing structures of the two complexes. Intermolecular hydrogen-bond interactions are the main force that stabilize the supramolecular systems. In both crystals, there are water molecules located near the cavity rims and in interstices between molecules of beta-cyclodextrin participating in formation of intermolecular hydrogen bonds. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2504 / 2508

页数：5

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