Thermal stability of meso-substituted metal corroles in inert and oxidative media


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

The thermal stability of 5,10,15-triphenylcorrole as the simplest representative of meso-substituted corroles and its complexes with d-metals (Cu3+, Mn3+, Mn4+, Co3+, Co4+, and Zn2+) is studied for the first time via thermogravimetry in oxidizing and inert atmospheres. It is shown that corroles, both as free ligands and in the form of metal complexes, are less thermally stable than porphyrins with a similar structure. It is found that if the free ligands of porphyrins are thermally more stable with respect to thermal oxidation than d-metal complexes, the thermal stability of metal corroles can be both lower and higher than those of free ligands. It is concluded that the order of thermal stability of compounds MnCor < CoCor < H3Cor < ZnCorH < CuCor is reversed upon moving from an oxidizing to an inert medium. It is shown that corroles complexes with many d-metals (Co, Mn, and others) readily participate in extracoordination reactions with electron-donating solvents, e.g., DMF, as is indicated by spectrophotometry and thermogravimetry.

Sobre autores

Vu Thao

Research Institute of Macroheterocyclic Compounds

Email: berezin@isuct.ru
Rússia, Ivanovo, 153000

D. Karimov

G. A. Krestov Institute of Solution Chemistry; Ivanovo State Medical Academy

Email: berezin@isuct.ru
Rússia, Ivanovo, 153045; Ivanovo, 153012

S. Guseinov

G. A. Krestov Institute of Solution Chemistry

Email: berezin@isuct.ru
Rússia, Ivanovo, 153045

E. Balantseva

G. A. Krestov Institute of Solution Chemistry

Email: berezin@isuct.ru
Rússia, Ivanovo, 153045

D. Berezin

Research Institute of Macroheterocyclic Compounds

Autor responsável pela correspondência
Email: berezin@isuct.ru
Rússia, Ivanovo, 153000

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Pleiades Publishing, Ltd., 2016