Efficient and Selective Photochemical Labilization of a Given Bidentate Ligand in Mixed Ruthenium(II) Complexes of the Ru(phen)2L2+ and Ru(bipy)2L2+ Family (L = Sterically Hindering Chelate)
✍ Scribed by Anne-Chantal Laemmel; Jean-Paul Collin; Jean-Pierre Sauvage
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 179 KB
- Volume
- 1999
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Mixed ruthenium(II) complexes containing 1,10-phen-converted to Ru(phen) 2 (CH 3 CN) 2 2+ in a photochemical reaction accompanied by expulsion of the sterically anthroline (or 2,2Ј-bipyridine) and a sterically congested bidentate ligand such as 2,9-diphenyl-1,10-phenanthroline, hindering chelate dmbp (phen = 1,10-phenanthroline; dmbp = 6,6Ј-dimethyl-2,2Ј-bipyridine). Interestingly, 2,2Ј-6,6Ј-dimethyl-or 6,6Ј-diphenyl-2,2Ј-bipyridine, or 1-(2Јpyridyl)-3,5-dimethylpyrazole undergo clean and selective bipyridine was found to be photochemically ejected in one case, probably as a consequence of its greater flexibility. ligand substitution under irradiation with visible light. For instance, Ru(phen) 2 (dmbp) 2+ in CH 3 CN is quantitatively