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双-[2,6-二甲基-3-(吡啶-2-基-κ)吡啶-4-基-κ](2,2,6,6-四甲基庚烷-3,5-二酮基-κ,')铱(III)乙酸乙酯单溶剂合物的晶体结构和发光性质

Crystal structure and luminescent properties of bis-[2,6-dimethyl-3-(pyridin-2-yl-κ)pyridin-4-yl-κ](2,2,6,6-tetra-methylhepta-ne-3,5-dionato-κ,')iridium(III) ethyl acetate monosolvate.

作者信息

Park Ki-Min, Moon Suk-Hee, Kang Youngjin

机构信息

Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Republic of Korea.

Department of Food and Nutrition, Kyungnam College of Information and Technology, Busan 47011, Republic of Korea.

出版信息

Acta Crystallogr E Crystallogr Commun. 2018 Aug 10;74(Pt 9):1206-1210. doi: 10.1107/S2056989018011076. eCollection 2018 Sep 1.

Abstract

In the solvated title compound, [Ir(CHN)(CHO)]·CHCOCH, the Ir ion adopts a distorted octa-hedral coordination environment resulting from its coordination by two ,-chelating 2,6-dimethyl-3-(pyridin-2-yl)pyridin-4-yl ligands and one ,-chelating 2,2,6,6-tetra-methylhepta-ne-3,5-dionate ligand. The ,-chelating ligands are perpendicular to each other [dihedral angle between the least-squares planes = 87.86 (5)°] and are arranged in a -, and -, fashion. In the crystal, pairwise C-H⋯π inter-actions between inversion-related Ir complexes are present, forming a dimeric structure. The title complex shows bright bluish-green emission with good quantum efficiency in solution at room temperature.

摘要

在溶剂化的标题化合物[Ir(CHN)(CHO)]·CHCOCH中,铱离子采用扭曲的八面体配位环境,这是由于它与两个η²-螯合的2,6-二甲基-3-(吡啶-2-基)吡啶-4-基配体和一个η²-螯合的2,2,6,6-四甲基庚烷-3,5-二酮配体配位所致。η²-螯合配体相互垂直[最小二乘平面之间的二面角 = 87.86 (5)°],并以η-和η-的方式排列。在晶体中,存在与反演相关的铱配合物之间的成对C-H⋯π相互作用,形成二聚体结构。标题配合物在室温下的溶液中显示出明亮的蓝绿色发射,具有良好的量子效率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1462/6127711/aa722eebb8ba/e-74-01206-fig1.jpg

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本文引用的文献

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Acta Crystallogr Sect E Struct Rep Online. 2013 Jul 10;69(Pt 8):m443. doi: 10.1107/S1600536813018394. eCollection 2013.
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Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22. doi: 10.1107/S0108767307043930. Epub 2007 Dec 21.

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