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Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands

Jozef Šima ; Department of Inorganic Chemistry, Slovak Technical University, Radlinskeho 9, SK-812 37 Bratislava, Slovakia

Puni tekst: engleski, pdf (77 KB) str. 593-600 preuzimanja: 743* citiraj
APA 6th Edition
Šima, J. (2001). Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands. Croatica Chemica Acta, 74 (3), 593-600. Preuzeto s https://hrcak.srce.hr/131868
MLA 8th Edition
Šima, Jozef. "Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands." Croatica Chemica Acta, vol. 74, br. 3, 2001, str. 593-600. https://hrcak.srce.hr/131868. Citirano 06.03.2021.
Chicago 17th Edition
Šima, Jozef. "Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands." Croatica Chemica Acta 74, br. 3 (2001): 593-600. https://hrcak.srce.hr/131868
Harvard
Šima, J. (2001). 'Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands', Croatica Chemica Acta, 74(3), str. 593-600. Preuzeto s: https://hrcak.srce.hr/131868 (Datum pristupa: 06.03.2021.)
Vancouver
Šima J. Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands. Croatica Chemica Acta [Internet]. 2001 [pristupljeno 06.03.2021.];74(3):593-600. Dostupno na: https://hrcak.srce.hr/131868
IEEE
J. Šima, "Mechanism of Photoredox Reactions of Iron(III) Complexes Containing Salen-type Ligands", Croatica Chemica Acta, vol.74, br. 3, str. 593-600, 2001. [Online]. Dostupno na: https://hrcak.srce.hr/131868. [Citirano: 06.03.2021.]

Sažetak
A mechanism of photoredox processes occurring in irradiated methanolic Solutions of trans-[Fe(R-salen)(CH3OH)F], where (R-salen)2- are tetradentate open-chain Schiff base N,N'-ethylenebis(5-R-salicyl-ideneiminato) N2O2-ligands (R = F, I, CH3, CF3, OCH3, NO2), has been investigated and proposed. The complexes are redox stable in the dark. The photoreduction of FeIII to FeII induced by ultraviolet irradiation of the complexes is associated with the radical CH2OH formation, which is subsequently transformed to formaldehyde CH2O, the mole ratio of FeII and CH2O approaching 2:1. The efficiency of the photoredox process is strongly wavelength dependent and influenced by the peripheral R groups of the tetradentate ligands. Electrode potentials E1/2(FeIII/II) correlate with Hammett constants of the R substituents. When compared with analogous halogeno trans-[Fe(R-salen)(CH3OH)X] complexes, significant stabilization of FeIII by F- ligands in the photochemical reduction is observed.

Ključne riječi
iron(III) complexes; fluoro complexes; Schiff base ligands; photoredox processes; electrode potentials; mechanism of photo-processes

Hrčak ID: 131868

URI
https://hrcak.srce.hr/131868

Posjeta: 931 *