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

Toshiyuki Moriuchi; Lisheng Mao; Hsyueh Liang Wu; Satoshi D. Ohmura; Masami Watanabe; Toshikazu Hirao

doi:10.1039/c2dt12309f

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

Toshiyuki Moriuchi, Lisheng Mao, Hsyueh Liang Wu, Satoshi D. Ohmura, Masami Watanabe, Toshikazu Hirao

Department of Chemistry

Research output: Contribution to journal › Article

4 Citations (Scopus)

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 IrCl ₃·nH ₂O 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.

Original language	English
Pages (from-to)	9519-9525
Number of pages	7
Journal	Dalton Transactions
Volume	41
Issue number	31
DOIs	https://doi.org/10.1039/c2dt12309f
Publication status	Published - 2012 Aug 21

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ASJC Scopus subject areas

Inorganic Chemistry

Cite this

Moriuchi, T., Mao, L., Wu, H. L., Ohmura, S. D., Watanabe, M., & Hirao, T. (2012). Synthesis of facial cyclometalated iridium(iii) complexes triggered by tripodal ligands. Dalton Transactions, 41(31), 9519-9525. https://doi.org/10.1039/c2dt12309f

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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 IrCl 3·nH 2O 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.",

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AU - Watanabe, Masami

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10.1039/c2dt12309f