Journal
CARBOHYDRATE RESEARCH
Volume 338, Issue 21, Pages 2227-2232Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0008-6215(03)00358-6
Keywords
imazalil; cyclomaltoheptaose; beta-cyclodextrin; inclusion complexes; supercritical fluid carbon dioxide; H-1 NMR spectroscopy; C-13 CPMAS NMR spectroscopy
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An inclusion complex between imazalil (IMZ), a selected fungicide, and cyclomaltoheptaose (beta-cyclodextrin, betaCD) was obtained using supercritical fluid carbon dioxide. The best preparation conditions were determined, and the inclusion complex was investigated by means of H-1 NMR spectroscopy in aqueous solution and C-13 CPMAS NMR spectroscopy in the solid state. Information on the geometry of the betaCD/IMZ complex was obtained from ROESY spectroscopy, while the dynamics of the inclusion complex in the kilohertz range was obtained from the proton spin-lattice relaxation times in the rotating frame, T-1p (H-1). (C) 2003 Elsevier Ltd. All rights reserved.
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