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Three new coordination polymers based on one reduced symmetry tripodal Linker

机译:基于一种简化的对称三脚架连接子的三种新型配位聚合物

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Three novel metal-organic frameworks, namely, {[(Zn_4O) _(1/2)(Zn_3-OH)_(1/2)L_(3/2)O 1/4(H_2O)_(5/2)(NO_2)_(1/2)] ·(H_2O)_4}_n (1), {[Cd_3L _2(H_2O)_4]· (H_2O) 9·DMA}_n (2), and {[Co(HL)(4,4′-bibp)]} _n (3; H_3L = 5′-carboxyl-[1,1′:3′, 1″-terphenyl]-4,4″-dicarboxylic acid, 4,4′-bibp = 4,4′-bisimidazolylbiphenyl, DMA = N,N-dimethylacetamide), have been synthesized under hydrothermal conditions. These compounds were characterized by elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction. Compound 1 reveals an unusual 3D structure with {4·5~2} {4·6~2}{4~2·5~2·6 ~8·8~3}{5~2·6}{5~3· 6~5·8~2} topology based on Zn_4O and Zn_3-OH clusters. In compound 2, the H_3L ligand assembles with Cd(NO_3)_2 to a 3D framework with sqc27 {4·6~2}_2{4~2·6~(10)· 8~3} topology. They are both three-dimensional frameworks containing one-dimensional channels. In compound 3, the HL2- anion and 4,4′-bibp both act as bidentate ligands and coordinate to Co cations to form a three-dimensional 4-connected uninodal network. In addition, the thermal stabilities for 1-3 and luminescent properties for 1 and 2 are also discussed in detail.
机译:三种新颖的金属有机骨架,即{[((Zn_4O)_(1/2)(Zn_3-OH)_(1/2)L_(3/2)O 1/4(H_2O)_(5/2) (NO_2)_(1/2)]·(H_2O)_4} _n(1),{[Cd_3L _2(H_2O)_4]·(H_2O)9·DMA} _n(2)和{[Co(HL) (4,4'-bibp)]} _n(3; H_3L = 5'-羧基-[1,1':3',1“-三联苯基] -4,4”-二羧酸,4,4'-bibp在水热条件下合成了4,4′-双咪唑基联苯,DMA = N,N-二甲基乙酰胺。这些化合物通过元素分析,红外光谱和X射线单晶衍射进行表征。化合物1揭示了一个异常的3D结构,其中{4·5〜2} {4·6〜2} {4〜2·5〜2·6〜8·8〜3} {5〜2·6} {5〜3 ·6〜5·8〜2}拓扑基于Zn_4O和Zn_3-OH簇。在化合物2中,H_3L配体与Cd(NO_3)_2组装成具有sqc27 {4·6〜2} _2 {4〜2·6〜(10)·8〜3}拓扑的3D骨架。它们都是包含一维通道的三维框架。在化合物3中,HL2-阴离子和4,4'-bibp均充当双齿配体并与Co阳离子配位,形成三维4连接的单节点网络。此外,还详细讨论了1-3的热稳定性以及1和2的发光特性。

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