6533b851fe1ef96bd12aa2d1
RESEARCH PRODUCT
Crystallographic and (spectro)electrochemical characterizations of cobalt(II) 10-phenyl-5,15-di-p-tolylporphyrin
Abdou K. D. DimeCharles H. DevillersDominique LucasHélène Catteysubject
Absorption spectroscopyStackingchemistry.chemical_elementCo(II)•••pi interactions010402 general chemistryElectrochemistryElectrosynthesis01 natural sciencesAnalytical Chemistrylaw.inventionInorganic ChemistryPorphyrinchemistry.chemical_compoundlaw[CHIM.ANAL]Chemical Sciences/Analytical chemistry[CHIM.COOR]Chemical Sciences/Coordination chemistryRotating disk electrodeSpectroscopyX-ray crystallographic structureElectrolysis010405 organic chemistry[CHIM.ORGA]Chemical Sciences/Organic chemistryOrganic ChemistryCobalt[CHIM.MATE]Chemical Sciences/Material chemistryPorphyrin0104 chemical sciencesCrystallographychemistrystacked aromatics dimersElectrosynthesisC-H•••pi interactionsCobaltdescription
International audience; The synthesis, cyclic and rotating disk electrode voltammograms, UV-visible absorption and Xray diffraction analyses of cobalt(II) 10-phenyl-5,15-dip -tolylporphyrin (1-Co) are described. 1-Co was crystallized by slow diffusion of n-hexane into a concentrated CH2Cl2 solution. X-ray diffraction analyses reveals porphyrin aromatic cycle stacking in the crystal, C-H•••π interactions of the CH2Cl2 solvent with the π-system of one tolyl group and Co(II)•••π (porphyrin ring) interactions. The abstraction of 1.0 F/mol during the electrolysis at the first oxidation potential was followed by spectroelectrochemistry. It leads to the Co(II) → Co(III) transformation rather than the formation of the cation radical of the porphyrin ligand. These results were supported by comparison of the cyclic and rotating disc electrode voltammograms, of the UV-Visible absorption spectra, before and after electrolysis of 1-Co.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-02-01 |