Pevny, Florian and Di Piazza, Emmanuel and Norel, Lucie and Drescher, Malte and Winter, Rainer F. and Rigaut, Stephane (2010) Fully Delocalized (Ethynyl)(vinyl)phenylene-Bridged Diruthenium Radical Complexes. ORGANOMETALLICS, 29 (22). pp. 5912-5918. ISSN 0276-7333,
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Diruthenium complexes (X)(dppe)(2)Ru-C C-1,4-C6H4-CH=CH-RuCl(CO)((PPr3)-Pr-i)(2) (X = Cl, 1a; X = C CPh, 1b) containing an unsymmetrical (ethynyl)(vinyl)phenylene bridging ligand are compared to their symmetrical 1,4-bis(ethynyl)phenylene- and 1,4-divinylphenylene-bridged congeners and their mononuclear alkynyl precursors. Electrochemical and UV/vis/NIR, IR, and EPR spectroscopic studies on the neutral complexes and their various oxidized forms indicate bridging ligand-centered oxidation processes and uniform charge and spin delocalization over both dislike organoruthenium moieties despite differences in their intrinsic redox potentials. Comparison between the chloro and the phenylacetylide-terminated derivatives 1a,b suggests further that the conjugated organometallic pi-system extends over the entire unsaturated backbone including the terminal ligand at the alkynyl ruthenium site. This paves the way to even more extended pi-conjugated organoruthenium arrays for long-range electronic interactions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CARBON-RICH BRIDGES; X-RAY CRYSTAL; RUTHENIUM COMPLEXES; THEORETICAL INVESTIGATIONS; ELECTRONIC COMMUNICATION; ACETYLIDE COMPLEXES; OXIDATION-STATES; SIGMA-ACETYLIDES; IRON; METAL; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jul 2020 10:51 |
| Last Modified: | 06 Jul 2020 10:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/23857 |
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