Kinetics of inclusion reactions of beta-cyclodextrin with several dihydroxycholate ions studied by NMR spectroscopy

Article Abstract:

The exchange between complexed and free dihydroxycholate ions in some aqueous dihydroxycholate-beta-cyclodextrin was investigated using nuclear magnetic resonance spectroscopy. Results showed that the complexed and free ions display separate 18-CH3 signals. The dominant exchange mechanism was observed to follow a unimolecular decomplexation step. The formation of the decomplexation reactions was found to be greatly influenced by dehydration.

Molecular structure, Ions, Cyclodextrins, Complex compounds, Coordination compounds

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Prediction of partition coefficients of fluorous and nonfluorous solutes in fluorous biphasic solvent systems by mobile order and disorder theory

Article Abstract:

The present partition model predicts that grafting more and /or longer perfluoroalkyl tails on a given substance does not automatically result in higher partition coefficients. A general relationship aimed at predicting the partition coefficients of solutes in fluorous biphasic systems has been derived from the universal log P model(super 6) based on the mobile order and disorder (MOD) theory.

Science & research, Chemistry, Physical and theoretical, Physical chemistry, Ligands, Ligands (Chemistry), Chemical properties, Alkyl groups, Coefficients

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