One methylene too far: The solid state structure of the para-sulfonatomethylcalix[4]arene

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• 作者：Florent Perret ; Sté ; phanie Gué ; ret ; Kinga Suwinska ; Anthony W. Coleman
• 关键词：para-Sulfonatomethylcalix[4]arene ; Calixarene ; Crystal structure ; X-ray crystallography
• 刊名：Journal of Molecular Structure
• 出版年：2007
• 出版时间：30 March 2007
• 年：2007
• 卷：830
• 期：1-3
• 页码：35-39
• 全文大小：1916 K

文摘

We report here, the first crystallographic structure of the new water soluble calixarene, para-sulfonatomethylcalix[4]arene. Anchoring a methylene group between the aromatic core of the calixarene and sulfonate groups extended the hydrophobic cavity but led to a more flexible macromolecule allowing formation of hydrogen bonds between vicinal sulfonate groups, causing the groups to point towards the cavity and effectively close it, with S S distances of 9.7 Å × 7.9 Å. The packing motif consists of bilayers of para-sulfonatomethylcalix[4]arene along both the a and b axis.