A structural and thermal investigation of the inclusion of parabens in heptakis(2,6-di-O-methyl)cyclomaltoheptaose

被引：10
|
作者：
de Vries, Elise J. C. [1 ]
Caira, Mino R. [1 ]
机构：
[1] Univ Cape Town, Dept Chem, ZA-7701 Rondebosch, South Africa
来源：
CARBOHYDRATE RESEARCH | 2008年 / 343卷 / 14期
关键词：
inclusion complex; heptakis(2,6-di-O-methyl)cyclomaltoheptaose; parabens; crystal structure;
D O I：
10.1016/j.carres.2008.06.014
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：
The structures of the inclusion complexes formed by heptakis(2,6-di-O-methyl)cyclomaltoheptaose and methyl-, ethyl-, propyl- and butyl parabens have been solved and analysed by X-ray diffraction. Each inclusion complex crystallises in the space group P2(1)2(1)2(1) with Z = 4 and a host-to-guest ratio of 1:1. However the packing arrangements and modes of guest inclusion are not equivalent for the four structures. The analytical data indicated that two isostructural pairs, the methyl- and ethyl-paraben complexes, have similar cell parameters that differ from those of the propyl- and butyl paraben complexes. The results of thermogravimetric analysis and differential scanning calorimetry of the complexes are also reported. (C) 2008 Elsevier Ltd. All rights reserved.
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页码：2433 / 2438
页数：6
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