Iridium(III) complexes with polypyridine ligands coordinated as N-heterocyclic carbenes. Synthesis, structure and photophysical properties
Unsaturated [TpMe2Ir(III)] fragments, readily generated from compounds [TpMe2Ir(C6H5)2(N2)], (1a) and [TpMe2Ir(¿4-CH2vC(Me)C(Me)vCH2] (1b) (TpMe2 = hydrotris(3,5-dimethylpyrazolyl)borate), induce the isomerisation of the polypyridines, 2,2¿-bipyridine, 1,10-phenanthroline and 2,2¿:6¿2¿¿-terpyridine,...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | otro |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/96237 |
| Acceso en línea: | http://hdl.handle.net/10261/96237 |
| Access Level: | acceso abierto |
| Sumario: | Unsaturated [TpMe2Ir(III)] fragments, readily generated from compounds [TpMe2Ir(C6H5)2(N2)], (1a) and [TpMe2Ir(¿4-CH2vC(Me)C(Me)vCH2] (1b) (TpMe2 = hydrotris(3,5-dimethylpyrazolyl)borate), induce the isomerisation of the polypyridines, 2,2¿-bipyridine, 1,10-phenanthroline and 2,2¿:6¿2¿¿-terpyridine, to form complexes that contain the carbene tautomer of these ligands. For terpy, a binuclear compound has also been isolated, in which this molecule bridges two Ir(III) centres, thanks to its coordination as a bidentate N-heterocyclic carbene. The new compounds have been structurally authenticated by X-ray crystallography and their photophysical properties have been investigated. |
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