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Issue 31, 2012
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Synthesis of facial cyclometalated iridium(III) complexes triggered by tripodal ligands

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Abstract

The tripodal ligands composed of the 1,3,5-trisubstituted cyclohexyl moiety as a molecular scaffold and 2-phenylpyridyl moieties as a coordination site were designed. The homoleptic cyclometalated fac-Ir(C^N)3 complexes could be obtained by the reaction of IrCl3·nH2O with the designed tripodal ligands. The single crystal X-ray structure determination confirmed the fac configuration and a distorted octahedral geometry with three intramolecular cyclometalated 2-phenylpyridyl ligands surrounding the iridium metal center. Also, the cyclohexyl scaffold was found to serve as a flexible scaffold to induce the fac configuration. The thus-obtained homoleptic cyclometalated fac-Ir(C^N)3 complexes exhibited a broad emission band in the emission spectra at 298 K.

Graphical abstract: Synthesis of facial cyclometalated iridium(iii) complexes triggered by tripodal ligands

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Publication details

The article was received on 01 Dec 2011, accepted on 30 May 2012 and first published on 02 Jul 2012


Article type: Paper
DOI: 10.1039/C2DT12309F
Citation: Dalton Trans., 2012,41, 9519-9525

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    Synthesis of facial cyclometalated iridium(III) complexes triggered by tripodal ligands

    T. Moriuchi, L. Mao, H. Wu, S. D. Ohmura, M. Watanabe and T. Hirao, Dalton Trans., 2012, 41, 9519
    DOI: 10.1039/C2DT12309F

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