V.I. Porhun, V.A. Navrotskii, L.N. Rygalov

Now it is proved, that semiquinone radicals of a various structure are formed in processes of transport electron in vegetative and animal fabrics, and also in microorganisms. In view of presence in these bio-logical systems of ions of metals, finding-out of interaction semiquinone radicals with these ions is represented especially interesting. Data obtained in the present work allow to explain stabilization about- a benzoguinon radical due to formation of a complex with an ion of copper. In the present work it is investigated kinetics destructions p- benzoguinon radicals at presence of salts of iron (II) and (III). Formation of complexes between radicals ВН and ions Cu2 + is revealed. Have been received-kinetic characteristics of such complexes, constants Complex to form, constants of speeds of formation and disinte-grations of complexes are received. Formation of complexes stabilizes an initial radical. Kinetic and thermodynamic characteristics of oxidation-reduction reactions, reactions of carry electron between pair-benzoguinon radicals and ions of iron are received. The constant of speed of reaction of oxida-tion a radical-anion is calculated by ions Cu2.