Structural Study of C-undecylcalix[4]resorcinarene Solvate with Dioxane |
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Authors: | Teresa Borowia Marek M?czyński Marek Pietraszkiewicz Oksana Pietraszkiewicz |
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Institution: | (1) Faculty of Chemistry, Adam Mickiewicz University, ul, Grunwaldzka 6, 60-780 Pozna, Poland |
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Abstract: | The crystal structure of the molecular complex of C-undecylcalix4]resorcinarene with dioxane has been determined by X-ray analysis. The asymmetric unit contains one host and four guest molecules. The calix4]resorcinarene moiety adopts a bowl conformation with C4v
symmetry. Four undecyl chains are axially oriented. Calix molecules are packed in a bowl-to-bowl fashion with alternating hydrophilic and hydrophobic layers. One of the hydrophilic dioxane molecules is located at the rim of the calix moiety and is hydrogen bonded to the other one. There is no interaction to attract, or direct the dioxane molecule into the interior of the cavity. There is an exo complex formed. The dioxane molecules – located in the hydrophobic part – are highly disordered. |
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Keywords: | C-undecylcalix[4]resorcinarene crystal structure dioxane solvation exo molecular complex |
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