| Synthesis, Structure and Properties of a Strontium（Ⅱ） Complex with 2, 3-Pyrazinedicarboxylic Acid |
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| 作者姓名： | LI Hui-Hui WU Ganga GUO Lia |
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| 作者单位： | [1]College of Material and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239012, China [2]State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China |
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| 基金项目： | The project was supporled by the University Science Foundation of Anhui Province，Anhui Province Natural Science Foundation，the Applied Chemistry Key Constructing Subject of Anhui Province |
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| 摘 要： | Complex Sr2(pdc)2(H2O)7]·H2O(1, H2 pdc=2,3-pyrazinedicarboxylic acid) has been synthesized and characterized by single-crystal X-ray diffraction studies and FT-IR. Structural determination reveals that there are two crystallographically independent strontium ions in 1. The coordination geometry of Sr(1) is a nine-coordinated distorted monocapped tetragonal antiprism, while Sr(2) is a nine-coordinated distorted monocapped tetragonal prism. The ligand pdc 2- takes two different connecting modes and links Sr(Ⅱ) centers to generate a 2D layer structure. The 2D layers are linked through O-H···O and O-H···N hydrogen bonds to form a 3D framework structure. Thermal stability and luminescent properties of complex 1 are investigated. 1 belongs to the monoclinic system, space group P21/n with a=10.7182(10), b=7.0377(6), c=29.225(3) , β=95.7170(10)o, Z=4, V=2193.5(3) 3 , M r=651.56, D c=1.973 g/cm 3 , F(000)=1296, μ=4.951 mm -1 , the final R=0.0318 and wR=0.0726 for 3938 observed reflections with I > 2σ(I).
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| 关 键 词： | 结构测定 发光性能 配合物 锶离子 合成 吡嗪 单晶X-射线衍射 FT-IR |
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