| 2-(4-甲基苯甲酰基)苯甲酸构筑的锰(Ⅱ)配合物的晶体结构、电化学、荧光及磁性研究 |
| Crystal Structure, Electrochemical, Fluorescent and Magnetic Properties of a New Manganese (Ⅱ) Complex with 2-(4-Methylbenzoyl)benzoic Acid as a Ligand |
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| 摘要: 以2-(4-甲基苯甲酰基)苯甲酸(HL)为配体合成了一个新的锰((Ⅱ)配合物Mn(L)2(2，2’-bipy)2。该配合物晶体属单斜晶系，空间群P21/c，晶胞参数：a=1.719 8(2) nm，b=1.039 80(14) nm，c=2.346 3(3) nm，β=95.732(3)°，V=4.174 8(9) nm3，Dc=1.346 g·cm-3，Z=4， μ(Mo Kα)=0.373 mm-1，F(000)=1 756，最终偏离因子R1=0.042 3，wR2=0.094 9。标题配合物的中心锰(Ⅱ)离子处于变形的八面体配位环境中。测定了配合物的电化学、荧光和磁性。结果表明：在循环伏安过程中，配合物的电子转移是准可逆的，对应的电极反应是Mn(Ⅲ)/Mn(Ⅱ)；配合物在536~556 nm之间有一个较强的荧光发射峰；在300~2 K，配合物有反铁磁性。 |
| 关键词: 锰(Ⅱ)配合物 2-(4-甲基苯甲酰基)苯甲酸 晶体结构 电化学、荧光和磁性 |
| 基金项目: 湖南省科学技术厅科技计划项目(No.2012GK3030)，湖南省教育厅科学研究项目(No.11C0186)，衡阳市科技计划项目(No.2011kG28)，湖南 省重点建设学科资助项目。 |
| Abstract: A new complex Mn(L)2(2,2'-bipy)2 (1) with 2-(4-methylbenzoyl)benzoic acid (HL) as a ligand has been synthesized. Crystal data for 1 are as follows: monoclinic, space group P21/c, a=1.719 8(2) nm, b=1.039 80(14) nm, c=2.346 3(3) nm, β=95.732(3)°, V=4.174 8(9) nm3, Dc=1.346 g·cm-3, Z=4, μ(Mo Kα)=0.373 mm-1, F(000)=1 756, final discrepancy factors R1=0.042 3, wR2=0.094 9. In 1, Mn(Ⅱ) ion is coordinated by six atoms to give a distorted octahedral coordination geometry. The electrochemical, luminescence and magnetic properties of 1 are studied. The results show that the electron transfer of 1 is quasi reversible in the electrode reaction corresponding to Mn(Ⅲ)/Mn(Ⅱ), and 1 exhibits one relatively strong fluorescent emission band at around 536~556 nm. In addition, 1 displays antiferromagnetic property in temperatures range of 300~2 K. CCDC: 924900. |
| Keywords: manganese(Ⅱ) complex 2-(4-methylbenzoyl)benzoic acid crystal structure electrochemical fluorescent and magnetic properties |
| 投稿时间：2013-02-19 修订日期：2013-09-20 |
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| 陈志敏,杨颖群,易正戟.2-(4-甲基苯甲酰基)苯甲酸构筑的锰(Ⅱ)配合物的晶体结构、电化学、荧光及磁性研究[J].无机化学学报,2014,30(3):659-663. |
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