3,3'-(吡啶-3,5)二苯甲酸构筑的Co(Ⅱ)/Ni(Ⅱ)配合物的合成、晶体结构及性质 |
Synthesis, Crystal Structure, Magnetic Properties and Catalytic Activity of Co(Ⅱ)/Ni(Ⅱ) Complexes with 3,3'-(Pyridine-3,5-diyl) Dibenzoic Acid |
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摘要: 设计、合成了2个配合物:{[Co2(pddb)2(μ2-H2O)(H2O)2]·2DMA·5H2O}n(1)和{[Ni2(pddb)2(μ2-H2O)(H2O)2]·2DMA·5H2O}n(2)(H2pddb=3,3'-(吡啶-3,5)二苯甲酸,DMA=N,N-二甲基乙酰胺),并通过红外光谱(IR),元素分析,热重分析(TG)和单晶X射线衍射确定它们的结构。结构分析表明1和2是异质同构的,其空间构型可简化成(3,6)连接的拓扑结构,其符号为(42·6)·(44·62·88·10)。进一步研究了配合物1和2的固体紫外、磁性及其催化性能。研究表明1和2中的中心金属离子之间存在反铁磁耦合作用,并且1可以作为C-H活化的高效非均相催化剂。 |
关键词: 3,3'-(吡啶-3,5)二苯甲酸 配合物 晶体结构 磁性 非均相催化 |
基金项目: 国家自然科学基金(No.21671174,21803016),中原千人计划,河北省高等学校科学技术研究重点项目(No.ZD2019309)和邯郸学院"育苗工程"(2018305)资助 |
Abstract: Two complexes 1~2 (1={[Co2(pddb)2(μ2-H2O)(H2O)2]·2DMA·5H2O}n and 2={[Ni2(pddb)2(μ2-H2O)(H2O)2]·2DMA·5H2O}n, H2pddb=3,3'-(pyridine-3,5-diyl) dibenzoic acid, DMA=N,N-dimethylacetamide) have been synth-esized and identified by Infrared spectroscopy (IR), elemental analysis, thermogravimetric analysis (TG) and single crystal X-ray diffraction. Structural analyses show that 1 and 2 are isostructural, and display a 3D (3,6)-connected net with the point symbol (42·6)·(44·62·88·10). Besides, the UV-Vis absorption spectra in solid state, the magnetic properties and catalytic activity of 1~2 were investigated. Between the proximal Co(Ⅱ)/Ni(Ⅱ) ions, the variable-temperature (2~300 K) magnetic susceptibilities of 1~2 display antiferromagnetic coupling. Furthermore, 1 have been verified to be effectual catalysts for the oxidation of arylacycloalkanes in aqueous medium. |
Keywords: 3,3'-(pyridine-3,5-diyl) dibenzoic acid complex crystal structure magnetic property heterogeneous catalyst |
投稿时间:2019-09-11 修订日期:2019-10-02 |
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韩晓,邵志超,赵蓓,任宁,孟祥茹,丁洁,侯红卫.3,3'-(吡啶-3,5)二苯甲酸构筑的Co(Ⅱ)/Ni(Ⅱ)配合物的合成、晶体结构及性质[J].无机化学学报,2019,35(11):2159-2167. |
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Support information: 相关附件: file190457_Supporting_Information_-_190457.doc |
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