Isolation, characterization and photophysical properties of a 2-(4,6-difluorophenyl)pyridyl Iridium(III) methoxide dimeric complex

A novel iridium(III) alkoxide dimeric complex containing 2-(4,6-difluorophenyl)pyridyl cyclometalating ligand was synthesized and characterized by IR, 1H-NMR and X-ray crystallographic methods. Aside from its novel structure and mechanistic implications as intermediate during the formation of homoleptic or heteroleptic Ir(III) complexes, it is interesting to note that this complex shows significant photoluminescence.

Graphical abstractAn iridium(III) alkoxide dimeric complex containing 2-(4,6-difluorophenyl)pyridyl cyclometalating ligand was synthesized and characterized, which is significant in view of its novel structure and mechanistic implications for the formation of Ir(III) complexes. Additionally, it is interesting to note that this complex shows significant photoluminescence, similar to those for related Ir(III) amidate complexes.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ir(III) 2-(4,6-difluorophenyl)pyridyl complexes. ► Ir(III) alkoxide complexes. ► Mechanistically relevant Ir(III) intermediates. ► Photoluminescence of Ir(III) alkoxide complexes.