Diversity in photoredox chemistry of oxo or hydroxo complexes of s(2) metal ions

Oldenburg, Karin and Vogler, Arnd and Horvath, Otto (1997) Diversity in photoredox chemistry of oxo or hydroxo complexes of s(2) metal ions. INORGANICA CHIMICA ACTA, 257 (2). pp. 149-151. ISSN 0020-1693, 1873-3255

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Abstract

The electronic spectra of hydroxo or oxo complexes of the s(2) metal ions Tl+, Sn2+, Sb3+, Bi3+ and Te4+ in alkaline solutions display absorption bands in the UV region which are assigned to metal-centered sp transitions. In the case of Tl+ and Sn2+ + these sp-excited states are also luminescent. TlOH is photooxidized to Tl2O3 by molecular oxygen while the photooxidation of Sn(OH)(3)(-) to Sn(OH)(6)(2-) is even achieved by water which is reduced to hydrogen. Both complexes produce hydrated electrons upon 266 nm laser excitation. No electron ejection can be observed for the hydroxo or oxo metalates of Sb3+, Bi3+ and Te4+, which undergo a photoreduction to the metallic state with a concomitant oxidation of hydroxide to hydrogen peroxide and/or oxygen.

Item Type: Article
Uncontrolled Keywords: MAIN-GROUP-METALS; CHLORIDE COMPLEXES; PHOTOCHEMISTRY; ANTIMONY(III); LEAD(II); PHOTOLUMINESCENCE; PHOTOPHYSICS; ELECTRON; TIN(II); photoredox chemistry; main group metal complexes; oxo complexes; hydroxo complexes
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Arnd Vogler
Depositing User: Dr. Gernot Deinzer
Date Deposited: 09 May 2023 07:47
Last Modified: 09 May 2023 07:47
URI: https://pred.uni-regensburg.de/id/eprint/50872

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