PHOTOCHEMISTRY AND PHOTOPHYSICS OF ANTIMONY(III) HYPER PORPHYRINS - ACTIVATION OF DIOXYGEN INDUCED BY A REACTIVE SP EXCITED-STATE

KNOR, G and VOGLER, A (1994) PHOTOCHEMISTRY AND PHOTOPHYSICS OF ANTIMONY(III) HYPER PORPHYRINS - ACTIVATION OF DIOXYGEN INDUCED BY A REACTIVE SP EXCITED-STATE. INORGANIC CHEMISTRY, 33 (2). pp. 314-318. ISSN 0020-1669,

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Abstract

Observations of the photoredox reactivity of antimony(III) porphyrin complexes are reported. Upon irradiation with visible light under ambient conditions, a photooxidation to the corresponding dihydroxoantimony(V) porphyrins occurs. At the same time a two-electron or four-electron reduction of molecular oxygen takes place, depending on the experimental conditions. In the absence of suitable electron accepters, a photoinduced disproportionation reaction occurs. The photolysis of antimony(III) porphyrins shows a pronounced wavelength dependence. The reactive excited state is concluded to be of the metal-centered sp type. An extended model for the electronic structure of p-type hyper metalloporphyrins is suggested.

Item Type: Article
Uncontrolled Keywords: MAIN GROUP-METALS; COORDINATION-COMPOUNDS; COMPLEXES; MANGANESE;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:41
URI: https://pred.uni-regensburg.de/id/eprint/53508

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