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Syntheses, Structures, Magnetic Properties and Luminescence of Four Coordination Polymers Based on an Asymmetric Semirigid Tricarboxylate Ligand
Journal of Solid State Chemistry ( IF 3.3 ) Pub Date : 2018-09-08 , DOI: 10.1016/j.jssc.2018.09.007
Shaodong Li , Liping Lu , Sisi Feng , Miaoli Zhu

In this work, four new complexes, [Mn(μ3-Hcpoia)(phen)(H2O)]n1, [Mn2(μ4-Hcpoia)2(μ2-bib)(H2O)2]n2, [Zn(μ2-Hcpoia)(phen)(H2O)]n3, and [Zn2(μ2-Hcpoia)2(μ2–4,4ʹ-bpy)(H2O)2]n·2nH2O 4 (H3cpoia = 4-(4-carboxyphenoxy)isophthalic acid, phen = phenanthroline, bib = 1,4-di(1H-imidazol-1-yl)benzene, 4,4′-bpy = 4,4′-bipyridine) have been synthesized by solvothermal reactions. Complexes 14 were fully characterized by IR spectroscopy, elemental analyses, thermogravimetric analyses, powder and single-crystal X-ray diffraction. Complexes 1 and 2 present two-dimensional (2D) structures based on the dinuclear Mn(II) secondary building units with the vertex symbols of (4.82) and (32.44)(34.46.64.7), respectively. Complex 3 possesses one-dimensional (1D) structure and reveals a uninodal 2-connected chain with the 2C1 topology. Complex 4 exhibits a 1D ladder-like double chain, containing a 1D metal–organic chain interconnected by the 4,4ʹ-bpy ligand with the vertex symbol of (42.6). Such a rich structural diversity of 14 is driven by various factors, including the type of the metal(II) ions and the ancillary ligands, as well as the coordination mode of ligand. Complexes 1 and 2 show antiferromagnetic interactions (J = –0.719 cm−1 for 1, and J = –6.981 cm−1 for 2) in dimeric units with the Mn-Mn distances of 4.451(1) and 3.151(5) Å, respectively that are related to double syn−anti carboxylate bridges and four bis-bidentate carboxylate groups with syn−syn and μ−oxo modes. The solid-state luminescent behaviors of 3, 4 were also investigated systematically.



中文翻译:

基于不对称半刚性三羧酸酯配体的四种配位聚合物的合成,结构,磁性和发光

在这项工作中,四个新的配合物,[锰(μ 3 -Hcpoia)(phen)的(H 2 O)] Ñ 1,[锰2μ 4 -Hcpoia)2μ 2 -bib)(H 2 O)2 ] ñ 2,[锌(μ 2 -Hcpoia)(phen)的(H 2 O)] ñ 3,并且,[Zn 2μ 2 -Hcpoia)2μ 2 -4,4'-联吡啶)(H 2 O)2 ] n ·2nH 2 O4(H 3 cpoia = 4-(4-羧苯氧基)间苯二甲酸,phen =菲咯啉,bib = 1,4-二(1H-咪唑-1-基)苯,4,4'-bpy = 4,4'-联吡啶已通过溶剂热反应合成。配合物1 - 4进行了充分表征通过IR光谱,元素分析,热重分析,粉末和单晶X射线衍射。配合物12呈现基于双核Mn(II)二级构造单元的二维(2D)结构,其顶点符号为(4.8 2)和(3 2 .4 4)(3 4 .4 6 .6 4)。 7)。复杂的图3具有一维(1D)结构,并显示具有2C1拓扑的单节点2连接链。配合物4具有一维梯形双链,其中包含一维金属-有机链,该链由4,4ʹ-bpy配体相互连接,其顶点符号为(4 2 .6)。这种丰富的结构多样性1 - 4是由多种因素,包括金属(II)离子和辅助配体的种类,以及作为配体的配位模式驱动。络合物12示出了反铁磁交互(Ĵ = -0.719 厘米-11,和Ĵ= -6.981 厘米-12)在与4.451(1)和3.151(5),分别使Mn-Mn系的距离使用有关双二聚单元顺-反羧酸桥和四个双-双齿羧酸酯基团与顺-synμ-oxo模式。的固态发光行为34进行了系统的研究。

更新日期:2018-09-09
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