Two one-dimensional d¹⁰-metal coordination polymers based on polydentate Schiff-base ligand: Synthesis, crystal structure and luminescent properties

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• 作者：Wei-Jia Niu ; Jun-Li Wang ; Yan Bai ; Dong-Bin Dang ; ^{dangdb@henu.edu.cn}
• 关键词：Coordination polymer ; Crystal structure ; Luminescent properties
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2012
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：June, 2012
• 卷：91
• 期：Complete
• 页码：61-66
• 文件大小：875 K

摘要

Two one-dimensional d¹⁰-metal coordination polymers {[AgL(H₂O)]₂[AgL(NO₃)]₂(NO₃)₂L(H₂O)₂}_n (1) and [ZnLCl₂]_n (2) (L = N,N鈥?bis-(1-pyridin-4-yl-ethylidene)-hydrazine) have been synthesized and characterized by IR, elemental analysis, TG technique, XRPD and X-ray crystallography. Polymer 1 contains two types of 1D Ag-double-chain units. Ag(1)-double-chain unit is formed by linking two adjacent Ag(1)-L-chains through face-to-face 蟺鈰€ interactions, while Ag(2)-double-chain unit is formed through the combination of coordinating NO₃^{鈭?/sup> anions bridging interactions and 蟺鈰€ interactions between two adjacent Ag(2)-L-chains. Free ligands interact with the adjacent Ag(1)-double-chain units and Ag(2)-double-chain units to form a 3D supramolecular structure through multiform hydrogen bonds. For polymer 2, each ligand acts as a bis-monodentate bridging ligand to bind adjacent Zn(II) centers forming a one-dimensional chain structure. Furthermore, 1D chain is held together with its neighboring ones via CH鈰€ interactions. The luminescent properties of the polymers 1 and 2 were investigated in the solid state at room temperature.}