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首页> 外文期刊>Crystal growth & design >Synthesis, Crystal Structures, and Properties of Novel Heterometallic La/Pr-Cu-K and Sm/Eu/Tb-Cu Coordination Polymers
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Synthesis, Crystal Structures, and Properties of Novel Heterometallic La/Pr-Cu-K and Sm/Eu/Tb-Cu Coordination Polymers

机译:新型杂金属La / Pr-Cu-K和Sm / Eu / Tb-Cu配位聚合物的合成,晶体结构和性能

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摘要

Five new heterometallic coordination polymers, {[LnCu(2)K(pydc)(4)(H2O)(9)]center dot H2O}(n) [Ln = La (1), Ln = Pr (2), H(2)pydc = pyridine-2,5-dicarboxylic acid], {[Ln(2)Cu(pydc)(4)(H2O)(8)]center dot H2O}n [Ln = Sm (3), Ln = Eu (4), Ln = Tb (5)], have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, thermogravimetric analysis, and single-crystal X-ray diffraction. X-ray structural analysis revealed that complexes 1 and 2 are the first Ln/Cu/K structures containing Cu(II) sandwiched in the interlayer regions of the two La/K planes alternately arranged along the b-axis. In complexes 3-5, two distinct types of building blocks, Ln(pydc)(H2O)(4) and Cu(pydc)(2), are linked together by pydc ligands to form a two-dimensional net structure. The magnetic properties of 1 and 2 and the luminescence properties of 3-5 have been investigated.
机译:五个新的杂金属配位聚合物,{[LnCu(2)K(pydc)(4)(H2O)(9)]中心点H2O}(n)[Ln = La(1),Ln = Pr(2),H( 2)pydc =吡啶-2,5-二羧酸],{[Ln(2)Cu(pydc)(4)(H2O)(8)]中心点H2O} n [Ln = Sm(3),Ln = Eu (4),Ln = Tb(5)],是在水热条件下合成的,并通过元素分析,IR,热重分析和单晶X射线衍射进行了表征。 X射线结构分析显示,配合物1和2是第一个包含Cu(II)的Ln / Cu / K结构,该结构夹在沿b轴交替排列的两个La / K平面的夹层区域中。在配合物3-5中,两种不同类型的构造单元Ln(pydc)(H2O)(4)和Cu(pydc)(2)通过pydc配体连接在一起,形成二维网状结构。已经研究了1和2的磁性能以及3-5的发光性能。

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