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首页> 外文期刊>Crystal growth & design >Structural Variation and Preference in Lanthanide-pyridine-2,6-dicarboxylate Coordination Polymers
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Structural Variation and Preference in Lanthanide-pyridine-2,6-dicarboxylate Coordination Polymers

机译:镧系元素 - 吡啶-2,6-二羧酸盐配位聚合物中的结构变异和偏好

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Ten lanthanide coordination polymers were designed and synthesized using pyridine-2,6-dicarboxylic acid (H(2)pdc) and two different heating techniques (conventional and microwave): [Ln(pdc)(H2O)(4)](3).3Cl {PO (3) over bar; Ln = Pr (I), Nd (II), Sm (III), Eu (IV), and Gd [Ln(pdc)(Hpdc)-(H2O)(2)1-3H(2)O. {P2(1)/c; Ln = Pr (VI), Nd (VII), and Sm (VIII)} and [Ln(pdc)(H2O)(3).3Cl (Ia (3) over bar; Ln = Sm (IX), and Eu (X)}. These complexes show variation in structures depending on the heating technique and the lanthanide ions. They can be classified into the cubic Pa (3) over bar (I -V) and Ia (3) over bar (IX, X), and the monoclinic P2(1)/c (VI-VIII) complexes. The cubic complexes exhibit supramolecular isomerism and a tubular three-dimensional structure of interpenetrated ks and pcu net topologies, while the monoclinic complexes are the supra molecular assemblies of the one-dimensional chains. As the cubic Pa (3) over bar structures are favored by the use of the microwave, there is variation in structures as conventional heating was employed, although the cubic Pa (3) over bar structures are still the most favored except for the VI case. The title complexes showed moderate thermal stabilities. The organic ligand is revealed to be a modest sensitizer to initiate the photoluminescence in the title complexes.
机译:使用吡啶-2,6-二羧酸(H(2)PDC)和两种不同的加热技术(常规和微波)设计和合成10镧系元素配位聚合物:[LN(PDC)(H2O)(4)](3) .3CL {PO(3)在酒吧; LN = Pr(I),Nd(II),SM(III),EU(IV)和GD [LN(PDC)(HPDC) - (H2O)(2)1-3H(2)O。 {P2(1)/ c; ln = pr(vi),nd(vii)和sm(viii)}和[ln(pdc)(h2o)(3).3cl(ia(3)上方; ln = sm(ix)和欧盟( X)}。这些复合物根据加热技术和镧系元素显示结构的变化。它们可以在Bar(I-I-IV)和IA(IX,x)上分类为立方PA(3)和IA(3) ,单斜晶型P2(1)/ c(VI-VIII)配合物。立方体复合物表现出超分子异构体和渗透性Ks和PCU网拓扑的管状三维结构,而单斜晶络合物是其中的同型分子组件 - 尺寸链。由于通过使用微波炉的立方Pa(3),由于采用常规加热,结构的变化,但是除了条形结构上的立方Pa(3)仍然是最有利的对于VI案例。标题复合物显示出中等的热稳定性。有机配体被揭示为一种适度的敏化剂,以引发标题中的光致发光复合物。

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