Three Generations of Cobalt Porphyrins as Catalysts in the Oxidation of Cycloalkanes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00512003" target="_blank" >RIV/61388955:_____/19:00512003 - isvavai.cz</a>

Result on the web

<a href="http://hdl.handle.net/11104/0302226" target="_blank" >http://hdl.handle.net/11104/0302226</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cssc.201802198" target="_blank" >10.1002/cssc.201802198</a>

Result language

angličtina

Original language name

Three Generations of Cobalt Porphyrins as Catalysts in the Oxidation of Cycloalkanes

Original language description

Three generations of cobalt porphyrins were synthesized, physicochemically characterized by FTIR and UV/Vis spectroscopy as well as cyclic voltammetry and applied as catalysts in the oxidation of cycloalkanes with atmospheric molecular oxygen under mild conditions. All examined catalysts were active in the tested reaction, and their catalytic activity varied with the nature and number of substituents on the porphyrin ring. Introduction of electron-withdrawing or electron-donating substituents at the porphyrin rings increases the activity of metalloporphyrin complexes. It was found, for the first time, that generation II cobalt porphyrins show higher activity in cycloalkane oxidation than cobalt porphyrins of generation III. The lower catalytic activity of generation III cobalt porphyrins can be attributed to the saddle-shaped deformation of the porphyrin macrocycle. DFT modeling of Co porphyrins and their interactions with molecular oxygen provided explanations for the observed effects. On the basis of prior reports and the obtained results, a reaction mechanism is proposed and discussed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ChemSusChem

ISSN

1864-5631

e-ISSN

—

Volume of the periodical

12

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

684-691

UT code for WoS article

000459739200013

EID of the result in the Scopus database

2-s2.0-85057978093