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RESEARCH PRODUCT
Electrochemistry of copper complexes with polyaza[n]paracyclophanes. Influence of ATP as an exogen ligand on the relative stability of the Cu(II) and Cu(I) oxidation states
Victor MarcelinoJuan F. MiravetEnrique García-españaAntonio DoménechSantiago V. Luissubject
ChemistryLigandInorganic chemistryPotentiometric titrationProtonationElectrochemistryAdductInorganic ChemistryCrystallographyMaterials ChemistryTitrationDifferential pulse voltammetryPhysical and Theoretical ChemistryCyclic voltammetrydescription
Abstract Interaction of Cu 2+ with the macrocycle 2,6,9,13-tetraaza[14]paracyclophane (L) and ATP has been followed by pH-metric titration, cyclic voltammetry and differential pulse voltammetry (DPV). Mixed adduct species with various degrees of protonation were found to be stable for pH>4. In neutral and alkaline media reduction of mixed complexes occurs in a two-electron quasi-reversible step in contrast with binary Cu 2+ L complexes which display two successive one-electron couples. The potentiometric and voltammetric data suggest that in ternary adducts ATP binds to Cu 2+ ions through the phosphate chain and one N-site of the adenine ring system.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-03-01 | Inorganica Chimica Acta |