Tetranuclear Zn(II) and mononuclear Ni(II) based coordination polymers derived from a pair of isomeric 1,2,4-triazole ligands 3,5-disubstituted by pyridine and acetate ethyl ester groups
作者:Bin Hu、Yue-Hua Wang、Hui-Fen Qian、Yu-Xin Peng、Wei Huang
DOI:10.1016/j.poly.2015.12.047
日期:2016.2
A pair of isomeric compounds, namely L1-Et [2-(5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)acetate ethyl ester] and L3-Et [2-(5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)acetate ethyl ester], has been synthesized in this work, and they are used as multi-dentate ligands to react with certain transition-metal ions under solvothermal conditions. As a result, two three-dimensional (3D) coordination polymers, i.e
一对异构化合物,即L1-Et [2-(5-(吡啶-4-基)-4H-1,2,4-三唑-3-基)乙酸乙酯]和L3-Et [2-( [合成5-(吡啶-3-基)-4H-1,2,4-三唑-3-基)乙酸乙酯],它们被用作多齿配体,与某些过渡反应-在溶剂热条件下的金属离子。结果,两个三维(3D)配位聚合物,即[Zn(L1)(H 2 O)] ClO 4 ·2H 2 O·0.5MeOH} n(C1)和[Ni(L2)2 ] (ClO 4)2 ·2H 2 O} n(C3),已经得到并对其结构进行了表征,其中发现配体L2是配体L3-Et的分解产物。注意,在C1表现出三维(3D)2倍互穿金刚石结构的情况下,构建了基于四核Zn 4(L1)4的新型簇有机框架。通过比较C1和C3的结构,可以得出结论,金属离子络合和配体分解之间的竞争导致形成不同的配位聚合物。