Synthesis of Facial Cyclometalated Iridium(III) Complexes Triggered by Tripodal Ligands
Synthesis of Facial Cyclometalated Iridium(III) Complexes Triggered by Tripodal Ligands
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三足配体触发面部环金属化铱(III)配合物的合成
DOI：
10.1039/c2dt12309f
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发表时间：
2012
影响因子：
4
通讯作者：
Toshiyuki Moriuchi
中科院分区：
文献类型：
--
作者：
Takashi Tanaka;Yuki Fujita;Masaki Ueno;Leonard D. Shultz;Toshihide Yamashita;Takashi Tanaka;田中貴士;田中貴士;田中貴士;Satoshi D. Omura;Toshiyuki Moriuchi
设计了以1，3，5-三取代环己基为骨架，2-苯基吡啶基为配位点的三脚架型配体。通过IrCl 3·nH 2 O与所设计的三脚架配体反应，可以得到均配的环化fac-Ir（C^N）3配合物。单晶X-射线结构测定证实了fac配置和扭曲的八面体几何形状与三个分子内环化的2-苯基吡啶配体周围的铱金属中心。此外，环己基支架被发现充当柔性支架以诱导fac构型。由此得到的均配环化fac-Ir（C^N）3配合物在298 K的发射光谱中显示出宽的发射带。
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.