Imazalil-cyclomaltoheptaose (beta-cyclodextrin) inclusion complex: preparation by supercritical carbon dioxide and 13C CPMAS and 1H NMR characterization.
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 1H NMR spectroscopy in aqueous solution and 13C 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(1rho) (1H).
Lai
Simona
S
Dipartimento di Scienze Chimiche, Università di Cagliari, Cittadella Universitaria di Monserrato, Strada Statale 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
Locci
Emanuela
E
Piras
Alessandra
A
Porcedda
Silvia
S
Lai
Adolfo
A
Marongiu
Bruno
B
D002245:Carbon Dioxide / Q000737:chemistry; D002247:Carbon Isotopes / Q000737:chemistry; D003505:Cyclodextrins / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011522:Protons; D047392:beta-Cyclodextrins
D002247:Carbon Isotopes; D003505:Cyclodextrins; D007093:Imidazoles; D011522:Protons; D047392:beta-Cyclodextrins; D002245:Carbon Dioxide; C017435:enilconazole; C031215:betadex