title: Iridium(III) complexes with polypyridine ligands coordinated as N-heterocyclic carbenes. Synthesis, structure and photophysical properties.
abstract: Unsaturated [Tp(Me2)Ir(III)] fragments, readily generated from compounds [Tp(Me2)Ir(C(6)H(5))(2)(N(2))], (1a) and [Tp(Me2)Ir(η(4)-CH(2)=C(Me)C(Me)=CH(2)] (1b) (Tp(Me2) = 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.
authors.affiliation: Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC and Universidad de Sevilla, Avda. Américo Vespucio 49, Isla de la Cartuja, Sevilla, 41092, Spain.
authors.forename: Salvador
authors.initials: S
authors.lastname: Conejero
authors.forename: Celia
authors.initials: C
authors.lastname: Maya
authors.forename: Margarita
authors.initials: M
authors.lastname: Paneque
authors.forename: Ana
authors.initials: A
authors.lastname: Petronilho
authors.forename: Manuel L
authors.initials: ML
authors.lastname: Poveda
authors.forename: Florencia
authors.initials: F
authors.lastname: Vattier
authors.forename: Eleuterio
authors.initials: E
authors.lastname: Álvarez
authors.forename: Ernesto
authors.initials: E
authors.lastname: Carmona
authors.forename: Antonio
authors.initials: A
authors.lastname: Laguna
authors.forename: Olga
authors.initials: O
authors.lastname: Crespo