Anion-dependent formation of four coordination polymers based on N,N '-di(3-pyridine) oxamide (DPOM): Crystal structures and luminescence
Anion-dependent formation of four coordination polymers based on N,N '-di(3-pyridine) oxamide (DPOM): Crystal structures and luminescence
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DOI：
10.1016/j.jssc.2017.06.001
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发表时间：
2017
影响因子：
3.3
通讯作者：
Zhong Di-Chang
中科院分区：
文献类型：
--
作者：
Deng Ji-Hua;Wen Ya-Qiong;Luo Xu-Zhong;Zhong Di-Chang
本文介绍了 N,N'-二(3-吡啶)草酰胺 (DPOM) 四种配位聚合物的阴离子调节形成、晶体结构和发光性能，包括两种一维 (1D) 链/梯形聚合物 [Ni(DPOM)(H2O)4]SO4·2H2O (1) 和 [Cd4(DPOM)6(NO3)8] (2)，以及两种 3D 配位聚合物， [Zn2(DPOM)(H2O)4(SO4)2] (3) 和 [Cd2(DPOM)(H2O)4(SO4)2] (4)。单晶X射线衍射分析结果表明，在这些配位聚合物中，DPOM配体作为桥梁，通过两个末端吡啶N原子连接金属离子。1是由DPOM桥形成的一维链结构。2是由DPOM配体桥接的Cd(NO3)2结构单元组成的一维梯状结构。 3和4都是3D柱层结构，其中2D无机层ZnSO4/CdSO4由DPOM配体支撑。光致发光测量结果表明，在激发下，2–4 可以在固态下分别发出 408、416 和 422 nm 的荧光。
Presented in this article are the anion-tuning formation, crystal structures and luminescent properties of four coordination polymers of N,N′-di(3-pyridine) oxamide (DPOM), including two one-dimensional (1D) chain/ladder polymers, [Ni(DPOM)(H2O)4]SO4·2H2O (1) and [Cd4(DPOM)6(NO3)8] (2), as well as two 3D coordination polymers, [Zn2(DPOM)(H2O)4(SO4)2] (3) and [Cd2(DPOM)(H2O)4(SO4)2] (4). The results of single crystal X–ray diffraction analyses indicate that in these coordination polymers, DPOM ligand serves as a bridge, connecting metal ions by both terminal pyridine N atoms.1is a 1D chain structure formed by the bridge of DPOM.2is a 1D ladder-like structure featuring Cd(NO3)2structural units bridged by DPOM ligands. Both3and4are 3D pillar-layer structures with the 2D inorganic layer ZnSO4/CdSO4pillared by DPOM ligands. The results of photoluminescent measurements illustrate that upon excitation,2–4can emit fluorescence in 408, 416, and 422 nm in the solid state, respectively.