| 2-(2-苯并咪唑基)吡啶双核镉(Ⅱ)配合物的水热合成、晶体结构及荧光性质 |
| Hydrothermal Synthesis, Crystal Structure and Photoluminescence Property of Cadmium(Ⅱ) Complex of 2-(2-Benzimidazolyl)pyridine |
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| 摘要: 通过水热反应，合成了2-(2-苯并咪唑基)吡啶(BMPY)镉(Ⅱ)配合物[Cd2Cl4(BMPY)2]。对它进行了元素分析、热重、红外光谱及电子光谱表征，并用X-射线单晶衍射测定了配合物的晶体结构。配体2-(2-苯并咪唑基)吡啶中的2个氮原子与3个氯原子与镉(Ⅱ)配位，形成五配位的畸变四角锥构型，2个配位镉(Ⅱ)离子通过双氯桥键结合成双核镉的配合物。该配合物通过分子间N-H…Cl，C-H…Cl氢键和π-π作用形成一维链状结构。热重-微分热重(TG-DTG)分析结果表明，[Cd2Cl4(BMPY)2]在320 ℃以下无分解反应，耐热性好。室温固态荧光测试显示，配合物在408.9 nm(λmax)处具有较强的荧光发射。 |
| 关键词: 2-(2-苯并咪唑基)吡啶 镉(Ⅱ)配合物 晶体结构 荧光性质 |
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| Abstract: A cadmium complex, [Cd2Cl4(BMPY)2] (BMPY: 2-(2-benzimidazolyl)pyridine), was synthesized by hydrothermal synthesis techniques and characterized by elemental analysis, thermogravimetric analysis, IR spectrum analysis and spectrofluorimetry. The single crystal structure was determined by the X-ray single crystal diffraction. The cadmium(Ⅱ) is coordinated with three chlorine atoms and two nitrogen atoms of one 2-(2-benzimidazolyl)pyridine molecule, generating a distorted quadrangular pyramid coordination geometry, and the dinuclear complex is formed with two chlorine bridge bonds. One-dimensional chain structure is constructed by hydrogen bonds of N-H…Cl, C-H…Cl and π-π interactions. TG-DTG and fluorescence analysis indicate that the complex has good thermal stability without decomposition reaction below 320 ℃ and exhibits a strong fluorescence-emission (λmax=408.9 nm) in the solid state at room temperature. CCDC: 856775. |
| Keywords: 2-(2-benzimidazolyl)pyridine cadmium(Ⅱ) crystal structure photoluminescence |
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| 郭应臣,王雷博,尚华奇,史 雪,杨 慧.2-(2-苯并咪唑基)吡啶双核镉(Ⅱ)配合物的水热合成、晶体结构及荧光性质[J].无机化学学报,2012,28(9):1904-1908. |
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