6533b831fe1ef96bd129874e
RESEARCH PRODUCT
Electrochemical determination of the stability of complexes formed by proton-ionizable ligands of 3,5-disubstituted 1H-pyrazole with phenethylamine
Enrique García-españaAntonio DoménechFelipe ReviriegoPilar Navarrosubject
chemistry.chemical_compoundchemistryStability constants of complexesLigandComputational chemistryInorganic chemistryRotating disk electrodePyrazoleElectrochemistryEquilibrium constantAnalytical ChemistryCyclophaneInclusion compounddescription
The application of two extreme models for diffusion in two-component systems to electrochemically determine equilibrium constants is discussed. The application of cyclic voltammetric, diferential pulse and rotating-disc electrode voltammetric data to elucidate the stoichiometry and formation constant of complex species by applying a generalization of the molar-ratio method is described. Molar-ratio experiments permit the distinction between the limiting diffusive regimes. The values of the equilibrium stability constants for complexation of phenethylamine and phenethylammonium ions by a 26-membered dioxotetraester crown of 3,5-disubstituted 1H-pyrazole as free ligand 1[L] and as dipyrazolate anion 1%[L 2 ]2Na, respectively, were determined. © 2000 Elsevier Science B.V. All rights
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-05-18 | Talanta |