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首页> 外文期刊>Crystal growth & design >Syntheses, structures, and photoluminescence of five new metal-organic frameworks based on flexible tetrapyridines and aromatic polycarboxylate acids
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Syntheses, structures, and photoluminescence of five new metal-organic frameworks based on flexible tetrapyridines and aromatic polycarboxylate acids

机译：五种基于柔性四吡啶和芳族多羧酸的新型金属有机骨架的合成，结构和光致发光

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摘要

Solvothermal reactions of tetrakis(4-pyridyloxymethylene)methane (TPOM) with deprotonated 1,4-benzenedicarboxylate (H_2bdc) or 5-hydroxyisophthalic acid (5-OH-H_2bdc) in the presence of nitrates of cadmium, zinc, and cobalt in H_2O or H_2O/DMF produced five new complexes, namely, {[Cd_2(TPOM)(bdc)_2]·?(H _2O)_5(DMF)}_n (1), {[Zn_2(TPOM)(bdc) _2]·(H_2O)_4}_n (2), {[Zn _2(TPOM)(bdc)_2]·?(H_2O)}_n (3), {[Co_2(TPOM)(5-OH-bdc)_2(H_2O)_2] · (H_2O)_5}_n (4), and {[Cd _2(TPOM)(5-OH-bdc)_2]·?(H_2O) _2}n (5). These complexes were characterized by elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction. Complex 1 reveals a 2-fold interpenetrating three-dimensional (3D) framework with pcu topology constructed from binuclear Cd clusters and TPOM ligands. In addition, the experiment of single-crystal-to-single-crystal (SC-SC) structural transformations upon guest exchange was tested. Zn complexes 2 and 3 possess different 3D frameworks and are prepared from TPOM and H_2bdc under different reaction conditions. In complexes 4 and 5, TPOM and 5-OH-H _2bdc link Co or Cd centers to generate 3D interpenetrating frameworks with bbf and qtz topology. In addition, thermal stabilities and photochemical properties of these new complexes in the solid state have been studied.
机译：四（4-吡啶氧基亚甲基）甲烷（TPOM）与去质子化的1,4-苯二甲酸（H_2bdc）或5-羟基间苯二甲酸（5-OH-H_2bdc）的溶剂热反应在镉，锌和钴的硝酸盐存在下于H_2O或H_2O / DMF产生了五个新的络合物，即{[Cd_2（TPOM）（bdc）_2]·？（H _2O）_5（DMF）} _ n（1），{[Zn_2（TPOM）（bdc）_2]·（ H_2O）_4} _n（2），{[Zn _2（TPOM）（bdc）_2]·？（H_2O）} _ n（3），{[Co_2（TPOM）（5-OH-bdc）_2（H_2O）_2 ]·（H_2O）_5} _n（4）和{[Cd _2（TPOM）（5-OH-bdc）_2]·？（H_2O）_2} n（5）。这些配合物的特征在于元素分析，红外光谱和X射线单晶衍射。配合物1揭示了一个2倍互穿的三维（3D）框架，该框架具有从双核Cd簇和TPOM配体构建的pcu拓扑。此外，还测试了客体交换时单晶至单晶（SC-SC）结构转变的实验。锌配合物2和3具有不同的3D骨架，并由TPOM和H_2bdc在不同的反应条件下制备。在配合物4和5中，TPOM和5-OH-H _2bdc链接Co或Cd以生成具有bbf和qtz拓扑的3D互穿框架。另外，已经研究了这些新的固态配合物的热稳定性和光化学性质。

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