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RESEARCH PRODUCT
Solvent, anion and structural effects on the redox potentials and UV-visible spectral properties of mononuclear manganese corroles
Mohammed ChkoundaJing ShenMaya El OjaimiRoger GuilardJean-michel BarbeKarl M. KadishClaude P. GrosJianguo Shaosubject
Inorganic chemistrychemistry.chemical_elementManganese010402 general chemistryPhotochemistryElectrochemistry01 natural sciencesRedoxSpectral lineIonInorganic Chemistrychemistry.chemical_compoundcorrole[CHIM.COOR]Chemical Sciences/Coordination chemistryPhysical and Theoretical ChemistryCorroleComputingMilieux_MISCELLANEOUS010405 organic chemistrySpectral properties[ CHIM.COOR ] Chemical Sciences/Coordination chemistryspectroelectrochemistry0104 chemical sciencesSolventchemistryelectrochemistrymanganesedescription
A series of manganese(III) corroles were investigated as to their electrochemistry and spectroelectrochemistry in nonaqueous solvents. Up to three oxidations and one reduction were obtained for each complex depending on the solvents. The main compound discussed in this paper is the meso-substituted manganese corrole, (Mes 2PhCor)Mn, and the main points are how changes in axially coordinated anion and solvent will affect the redox potentials and UV-vis spectra of each electrogenerated species in oxidation states of Mn(III), Mn(IV), or Mn(II). The anions OAc (-), Cl (-), CN (-), and SCN (-) were found to form five-coordinate complexes with the neutral Mn(III) corrole while two OH (-) or F (-) anions were shown to bind axially in a stepwise addition to give the five- and six-coordinate complexes in nonaqueous media. In each case, complexation with one or two anionic axial ligands led to an easier oxidation and a harder reduction as compared to the uncomplexed four-coordinate species.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 |