Kinetic Stability of Corrole Complexes with Manganese, Copper,
and Zinc in Environments Based on Acetic and Sulfuric Acids¹

D. B. Berezin^a, O. V. Shukhto^a, Vu Thi Thao^a, D. R. Karimov^{b, c}, and B. D. Berezin^{a, b, †}

^a Ivanovo State University of Chemical Technology, Research Institute of Macroheterocyclic Compounds, Ivanovo, Russia

^b Krestov Institute of Chemistry of Solutions, Russian Academy of Sciences, Ivanovo, Russia

^c Ivanovo State Medical Academy, Federal Agency for Public Health and Welfare of the Russian Federation, Russia

e-mail: berezin@isuct.ru

Received March 19, 2014

Abstract—Complexes of some meso- and undeca-substituted corroles with manganese, copper, and zinc are
synthesized. Their stability in protolytic dissociation processes studied using spectroscopy methods increases
for meso-triphenylcorrole (I) complexes in the following series of metals: Zn < Mn < Cu. The stability of copper
complexes in the HOAc–H₂SO₄ environment increases after electron–donor substitution of molecules in the
series: Cu(ms-Ph)₃Cor (Ib) > Cu(ms-4-OCH₃Ph)₃Cor (IIb) Cu(-Br)₈(ms-Ph)₃Cor (IVb) > Cu(ms-4-NO₂Ph)₃Cor
(IIIb). Contrariwise, the dissociation rates of manganese corroles increase with increasing electron-donating
properties of the substituents in the macrocycle: IVb < IIIb < Ia < IIa. Dissociation of metallocorroles is
accompanied by donor-acceptor and acid–base interactions, as well as by intramolecular redox processes, to
result in low selectivity of dissociation and formation of side products. The dissociation scheme of corrole com-
plexes with mixed-valence d metals was proposed for the first time.

DOI: 10.1134/S0036023614120067

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.