title: Synthesis of facial cyclometalated iridium(III) complexes triggered by tripodal ligands.
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(2)O 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.
authors: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka 565-0871, Japan. moriuchi@chem.eng.osaka-u.ac.jp
authors: Toshiyuki
authors: T
authors: Moriuchi
authors: Lisheng
authors: L
authors: Mao
authors: Hsyueh-Liang
authors: HL
authors: Wu
authors: Satoshi D
authors: SD
authors: Ohmura
authors: Masami
authors: M
authors: Watanabe
authors: Toshikazu
authors: T
authors: Hirao