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PubMed · 4505671

Relaxation study of complex formation between monovalent cations and cyclic polyethers.

P B Chock
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Abstract

Equilibrium quotients for the 1:1 complexes of dibenzo-30-crown-10 with Na(+), K(+), Rb(+), Cs(+), NH(4) (+), and T1(+) in methanol solution have been determined spectrophotometrically. The observed selectivity pattern is discussed in terms of the hydration energy of the cations and the cation-ligand binding energy. The rate of complex formation is diffusion-controlled. Relaxation amplitude data are consistent with a mechanism that involves conformational change of the crown compound.

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Ammonium ChlorideBenzene DerivativesCesiumChemical PhenomenaChemistryCrown EthersEthers, CyclicKineticsLithiumMathematicsModels, ChemicalModels, StructuralPotassiumRubidiumSodiumSpectrophotometryTemperatureThalliumThermodynamicsUltraviolet RaysJournal Article

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BibTeXRIS

P B Chock. 1972. Relaxation study of complex formation between monovalent cations and cyclic polyethers.. https://doi.org/10.1073/pnas.69.7.1939

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