Abstract

Solvothermal condition reaction of Ln(NO₃)₃ ⋅ 6H₂O (Ln = Er, Eu) with 5-nitroisophthalate (Nipt^2–) and mononuclear macrocyclic oxamide complex ML (M = Ni or Cu) afforded two new 3d–4f heterometallic coordination polymers [Er₂(CuL)₂(Nipt)₃(H₂O)] ⋅ 0.75H₂O (I) and [Eu₂(NiL)₂(Nipt)₃(H₂O)] ⋅ H₂O (II) (ML, H₂L = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien; H₂Nipt = 5-nitroisophthalic acid). Their structures have been characterized by elemental analyses, FT-IR, UV, and single-crystal X-ray diffraction analyses (CIF files CCDC nos. 1880429 (I), 1880430 (II)). Both complexes I and II exhibit a 2D dimensional heterometallic framework with 3,3,4,5-connected (3.4.5)(3².4².5.6³.7²)(4².6³.8)(4².6) topology, and adjacent 2D structures are connect together with intermolecular O–H⋅⋅⋅O and C–H⋅⋅⋅O hydrogen bonds to form a 3D superamolecular architectures. Moreover, the visible and near-infrared luminescence properties of the compound I are also discussed.

中文翻译：

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3 d–4 f配位聚合物Cu 2 Er 2和Eu 2 Ni 2的合成，晶体结构，可见光和近红外发光特性

摘要

LN的溶剂热反应的条件（NO ₃）₃ ⋅6H ₂ O（LN =尔，Eu）的5-硝基间苯二甲酸（的NiPt ^2-）和大环的单核络合物草酰胺ML，得到（M = Ni或Cu）的新型3 d -4 f杂金属配位聚合物[Er ₂（CuL）₂（Nipt）₃（H ₂ O）]⋅0.75H ₂ O（I）和[Eu ₂（NiL）₂（Nipt）₃（H ₂ O）] ⋅H ₂ O（II）（ML，H ₂L ＝ 2，3-二氧代-5、6、14、15-二苯并-1、4、8、12-四氮杂环-戊烯-7、13-dien；H ₂ Nipt = 5-硝基间苯二甲酸）。它们的结构已通过元素分析，FT-IR，UV和单晶X射线衍射分析（CIF文件CCDC No. 1880429（I），1880430（II））进行了表征。配合物I和II均显示具有3,3,4,5-连接的（3.4.5）（3 ² .4 ² .5.6 ³ .7 ²）（4 ² .6 ³ .8）（4 ².6）拓扑，相邻的2D结构通过分子间的O–H⋅⋅⋅O和C–H⋅⋅⋅O氢键连接在一起，从而形成3D超分子结构。此外，还讨论了化合物I的可见和近红外发光性质。