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Crystals 2016, 6(1), 2; doi:10.3390/cryst6010002

Structural Elucidation of α-Cyclodextrin-Succinic Acid Pseudo Dodecahydrate: Expanding the Packing Types of α-Cyclodextrin Inclusion Complexes

Georg-August-Universität Göttingen, GZG, Abt. Kristallographie, Goldschmidtstr. 1, 37077 Göttingen, Germany
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Academic Editor: Sławomir J. Grabowski
Received: 16 November 2015 / Revised: 14 December 2015 / Accepted: 16 December 2015 / Published: 24 December 2015
(This article belongs to the Special Issue Analysis of Hydrogen Bonds in Crystals)
View Full-Text   |   Download PDF [2460 KB, uploaded 24 December 2015]   |  

Abstract

This paper reports a new packing type of α-cyclodextrin inclusion complexes, obtained here with succinic acid under low-temperature crystallization conditions. The structure of the 1:1 complex is characterized by heavy disorder of the guest, the solvent, and part of the host. The crystal packing belongs to the known channel-type structure; the basic structural unit is composed of cyclodextrin trimers, as opposed to the known isolated molecular or dimeric constructs, packed along the c-axis. Each trimer is made of crystallographically independent molecules assembled in a stacked vase-like cluster. A multi-temperature single-crystal X-ray diffraction analysis reveals the presence of dynamic disorder. View Full-Text
Keywords: cyclodextrins; inclusion complexes; crystallization; structural disorder cyclodextrins; inclusion complexes; crystallization; structural disorder
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Saouane, S.; Fabbiani, F.P.A. Structural Elucidation of α-Cyclodextrin-Succinic Acid Pseudo Dodecahydrate: Expanding the Packing Types of α-Cyclodextrin Inclusion Complexes. Crystals 2016, 6, 2.

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