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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Threefold Interpenetrated Cadmium(II) Organic Framework based on 3-(5-(Pyridin-4-yl)-1H-1,2,4-triazol-3-yl)pyridine and 1,1′-Biphenyl-4,4′-dicarboxylate
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Threefold Interpenetrated Cadmium(II) Organic Framework based on 3-(5-(Pyridin-4-yl)-1H-1,2,4-triazol-3-yl)pyridine and 1,1′-Biphenyl-4,4′-dicarboxylate

机译:基于3-(5-(吡啶-4-基)-1H-1,2,4-三唑-3-基)吡啶和1,1'-联苯-4,4'的三重互穿镉(II)有机骨架-二羧酸盐

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摘要

The coordination polymer [Cd(HL)(BPDA)]_n·nH_2O (1) based on 3-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)pyridine (HL) and 1,1′-biphenyl-4,4′-dicarboxylic acid (H_2BPDA) was hydrothermally synthesized and characterized by single-crystal X-ray diffraction, XRPD, IR spectroscopy, and elemental analysis. The asymmetric unit of compound 1 consists of one crystallographically independent CdII ion, one HL ligand, “two half” BPDA~(2–) ligand, and one lattice water molecule. There are two crystallographically different BDPA~(2–) moieties, but each of them is placed in a symmetry element. The BPDA~(2–) ligands and Cd~(II) ions connected to2D sheet, and the 2D sheets are connected to a 3D MOF by the HL ligands. Each dimeric Cd~(II) unit links six nearest neighbors through the BPDA~(2–) and HL ligands, and the dimeric CdII units are centrosymmetric. Two parallel HL ligands connect two dimeric CdII units, generating long Cd2–HL–Cd2–HL rings, also centrosymmetric. So we can define the dimeric Cd~(II) unit as a 6-connected node. Thus, the 3D structure can be described as a threefold parallel interpenetrated bsn beta-Sn topology. In addition, the optical properties of compound 1 and the free ligand HL were investigated.
机译:基于3-(5-(吡啶-4-基)-1H-1,2,4-三唑-3-基)吡啶(HL的配位聚合物[Cd(HL)(BPDA)] _ n·nH_2O(1) )和1,1'-联苯-4,4'-二羧酸(H_2BPDA)水热合成,并通过单晶X射线衍射,XRPD,IR光谱和元素分析进行​​表征。化合物1的不对称单元由一个晶体学上独立的CdII离子,一个HL配体,“两半” BPDA〜(2-)配体和一个晶格水分子组成。晶体学上有两个不同的BDPA〜(2-)部分,但每个部分都位于一个对称元素中。 BPDA〜(2-)配体和Cd〜(II)离子连接到2D薄板,而2D薄板通过HL配体连接到3D MOF。每个二聚Cd〜(II)单元通过BPDA〜(2-)和HL配体连接六个最近的邻居,并且二聚CdII单元是中心对称的。两个平行的HL配体连接两个二聚体CdII单元,生成长的Cd2-HL-Cd2-HL环,也是中心对称的。因此,我们可以将二聚体Cd〜(II)单元定义为6个连接的节点。因此,可以将3D结构描述为三重并行互穿的bsn beta-Sn拓扑。另外,研究了化合物1和游离配体HL的光学性质。

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