Knör, Günther (2003) Investigations on the redox-photochromism of rhodium acetonitrile complexes. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 58 (8). pp. 741-744. ISSN 0932-0776
Full text not available from this repository.Abstract
The spectroscopic and photochrornic properties of the dinuclear rhodium complex Rh2L10X4 (L = CH3CN, X- = BF4-) have been studied in acetonitrile solution. A reversible wavelength-dependent photoredox disproportionation of the dark-equilibrated dirhodium(II) compound occurs upon irradiation with quantum yields of phi = 0.04 at 254 nm and phi = 0.60 at 436 nm, respectively. While the photolysis products show conspicuous aggregation phenomena at higher concentrations, a straightforward pseudo-bimolecular recombination of the metastable fragments following second-order kinetics was observed in 5 x 10(-5) M solution with k = 0.18 l mol(-1) s(-1) at 295 K. Both spectroscopic and kinetic results are consistent with the heterolytic formation of mononuclear rhodium(l) and rhodium(III) acetonitrile complexes in the course of the photochemical reaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHOTOCHEMISTRY; STATES; CATION; photochemistry; rhodiub complexes; electronic spectra; redox reactions; photochromism |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Aug 2021 09:32 |
| Last Modified: | 05 Aug 2021 09:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38806 |
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