两个基于柔性双苯并咪唑配体的锌配位聚合物的合成、晶体结构和荧光性质 |
Syntheses, Crystal Structures and Luminescence Properties of Two Zn(Ⅱ) Coordination Polymers Based on Flexible Bisbenzimidazole Ligand |
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摘要: 以1,4-双(2-甲基苯并咪唑-1-亚甲基)苯(bmb)和2个芳香多羧酸1,2,4,5-均苯四酸(H4btec)、4-(3,4-二羧基苯甲酰)邻苯二甲酸(H4dcbp)为配体,在水热条件下合成了2个锌配位聚合物{[Zn(bmb)0.5(btec)0.5(H2O)]·H2O}n(1)和{[Zn2(bmb)2(dcbp)]·5H2O}n(2),并用X射线单晶衍射、红外光谱、元素分析和粉末衍射对其结构进行了表征。晶体结构测试表明2个聚合物均为复杂的三维框架结构,配体bmb在2个配合物中均为μ2-η1∶η1的配位模式。此外还研究了2个配合物的荧光性质和热稳定性。 |
关键词: 配位聚合物 锌 晶体结构 荧光 |
基金项目: 河南省高等学校重点科研项目(No.19B150011)资助项目。 |
Abstract: Two new coordination polymers, {[Zn(bmb)0.5(btec)0.5(H2O)]·H2O}n (1) and {[Zn2(bmb)2(dcbp)]·5H2O}n (2) were synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffractions, IR spectra, elemental analyses and powder X-ray diffractions (bmb=1,4-bis(2-methylbenzimidazol-1-ylmethyl) benzene, H4btec=1,2,4,5-benzenetetracarboxylic acid, H4dcbp=4-(3,4-dicarboxybenzoyl)phthalic acid). Structural analyses reveal that both polymers 1 and 2 exhibit complicated 3D frameworks in which bmb acts as linker with μ2-η1:η1 coordination mode. Thermal stabilities and solid-state luminescence at room temperature of 1 and 2 also were investigated. |
Keywords: coordination polymers zinc crystal structure luminescence |
投稿时间:2019-06-11 修订日期:2019-07-12 |
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兰红红,李小童,楚文娟,许春莺,吉保明.两个基于柔性双苯并咪唑配体的锌配位聚合物的合成、晶体结构和荧光性质[J].无机化学学报,2019,35(10):1896-1902. |
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