n1-arene complexes as intermediates in the preparation of molecular phosphorescent iridium(III) complexes
Resumen: Molecular phosphorescent heteroleptic bis-tridentate iridium(III) emitters have been prepared via n1-arene intermediates. In the presence of 4.0 mol of AgOTf, the complex [(IrCl{k3-N, C, N-(pyC6HMe2py)})(µ-Cl)]2 (1; pyC6H2Me2py=1, 3-di(2-pyridyl)-4, 6-dimethylbenzene) reacted with 9-(6-phenylpyridin-2-yl)-9H-carbazole (PhpyCzH) and 2-phenoxy-6-phenylpyridine (PhpyOPh) to give [Ir{k3-N, C, N-(pyC6HMe2py)}{k3-C, N, C'-(C6H4pyCzH)}]OTf (2) and [Ir{k3-N, C, N-(pyC6HMe2py)}{k3-C, N, C'-(C6H4pyOPh)}]OTf (3). The X-ray diffraction structures of 2 and 3 reveal that the carbazolyl and phenoxy substituents of the C, N, C' ligand coordinate to the metal center to form an n1-arene p bond. Treatment of 2 and 3 with KOtBu led to the deprotonation of the coordinated carbon atom of the n1-arene group to afford the molecular phosphorescent [5t+4t'] heteroleptic iridium(III) complexes [Ir{k3-N, C, N-(pyC6HMe2py)}{k3-C, N, C'-(C6H4pyCz)}] (4) and [Ir{k3-N, C, N-(pyC6HMe2py)}{k3-C, N, C'-(C6H4pyOC6H4)}] (5). These complexes are green emitters that display short lifetimes and high quantum yields of 0.73 (4) and 0.87 (5) in the solid state.
Idioma: Inglés
DOI: 10.1002/chem.201703252
Año: 2017
Publicado en: Chemistry - A European Journal 23, 62 (2017), 15729-15737
ISSN: 0947-6539

Factor impacto JCR: 5.16 (2017)
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 37 / 171 = 0.216 (2017) - Q1 - T1
Factor impacto SCIMAGO: 2.265 - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E35
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2014-52799-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-81797-REDC
Tipo y forma: Article (Published version)
Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)

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