Synthesis, Structure and Photoluminescence of a New Ir Complex Based on Pyridine-2,3-dicarboxylic Acid

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摘要

A new complex Ir(ppy)2(Hpda) (Hppy = 2-phenylpyridine, H2pda = pyridine-2,3- dicarboxylic acid) has been synthesized and characterized. According to single-crystal X-ray diffraction analyses, the title complex crystallizes in the monoclinic system, space group P21/n with a = 8.5708(10), b = 22.685(2), c = 12.5722(15) Å, β = 96.19(1)°, V = 2430.2(5) Å3, C29H20N3O4Ir, Mr = 666.22, Z = 4, Dc = 1.833 g/cm3, F(000) = 1304, μ = 5.54 mm-1, λ(MoKα) = 0.71073 Å, GOOF = 1.02, the final R = 0.049 and wR = 0.119 for 4680 independent reflections with Rint = 0.069. The title complex is of mononuclear structure. Intermolecular C–H•••O hydrogen bonds and - stacking interactions result in the formation of a 3D supramolecular network. Photoluminescent spectra show that one intense emission band with the maximum of 516 nm can be observed in the title complex.

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	孙长艳
	关俊卿
	何翔
	李文军
	常志东

关键词 ： pyridine-2,3-dicarboxylic acid, iridium(III) ion, phosphorescent property, crystal structure

Abstract：

本文合成了一个新的铱配合物Ir(ppy)2(Hpda)（其中，Hppy =2-苯基吡啶，H2pda = 吡啶2,3-二甲酸），并且用元素分析、红外光谱、核磁共振及单晶X-射线衍射等各种手段对该配合物进行了表征。单晶X-射线衍射结果显示该配合物属于单斜晶系，P21/n空间群，a = 8.5708(10), b = 22.685(2), c = 12.5722(15) Å, β = 96.19(1)°, V = 2430.2(5) Å3, C29H20N3O4Ir, Mr = 666.22, Z = 4, Dc = 1.833 g/cm3, F(000) = 1304, μ = 5.54 mm-1, λ(MoKα) = 0.71073 Å, GOOF = 1.02, R = 0.049， wR = 0.119，针对4680个独立衍射点Rint = 0.069。标题配合物具有单核结构，由分子间的C–H···O氢键和-堆积作用连成3D超分子网络。荧光光谱表明标题配合物的发射峰位于516 nm处。

Key words： pyridine-2,3-dicarboxylic acid iridium(III) ion phosphorescent property crystal structure

收稿日期: 2016-05-20 出版日期: 2017-02-13

基金资助:

This work was supported by the National Natural Science Foundation of China (21101013, 21276022) and Beijing Higher Education Young Elite Teacher Project (YETP0393)

通讯作者: cysun@ustb.edu.cn E-mail: cysun@ustb.edu.cn

引用本文:

孙长艳;关俊卿;何翔;李文军;常志东. Synthesis, Structure and Photoluminescence of a New Ir Complex Based on Pyridine-2,3-dicarboxylic Acid[J]. 结构化学, 2017, 36(2): 280-285.
SUN Chang-Yan;GUAN Jun-Qing;HE Xiang;LI Wen-Jun;CHANG Zhi-Dong. 一个基于2,3-吡啶二甲酸的铱配合物的合成、结构与发光性质研究. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2017, 36(2): 280-285.

链接本文:

http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2017/V36/I2/280

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