By the solvothermal reactions of 2,5‐bis(1H‐1,2,4‐triazol‐1‐yl)terephthalic acid (H₂L) with transition‐metal ions, two novel polymeric complexes, namely, poly[diaqua[μ₄‐2,5‐bis(1H‐1,2,4‐triazol‐1‐yl)terephthalato]cobalt(II)], [Co(C₁₂H₆N₆O₄)(H₂O)₂]_n, (1), and poly[[diaqua[μ₄‐2,5‐bis(1H‐1,2,4‐triazol‐1‐yl)terephthalato]nickel(II)] dihydrate], {[Ni(C₁₂H₆N₆O₄)(H₂O)₂]·2H₂O}_n, (2), were isolated. Both polymers have been characterized by FT–IR spectroscopy, elemental analysis and single‐crystal X‐ray diffraction analysis. The complexes have similar two‐dimensional layered structures and coordination modes. Furthermore, the two‐dimensional layered structures bear distinct intermolecular hydrogen‐bonding interactions and π–π stacking interactions to form two different three‐dimensional supramolecular networks based on 4⁴‐subnets. The structural variation depends on the nature of the metal cations. The results of variable‐temperature magnetization measurements (χ_MT−T and χ_M⁻¹−T) show that complexes (1) and (2) display antiferromagnetic behaviour.

中文翻译：

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基于双功能配体2,5-双（1H-1,2,4-三唑-1-基）对苯二甲酸的金属定向超分子体系结构。

通过2,5-双（1 H -1,2,4-三唑-1-基）对苯二甲酸（H ₂ L）与过渡金属离子的溶剂热反应，形成了两种新型的聚合物络合物，即聚[diaqua [ μ ₄ -2,5-双（1- ħ -1,2,4-三唑-1-基）terephthalato]钴（II）]，[CO（C ₁₂ H ^ ₆ ñ ₆ ø ₄）（H ₂ O）₂ ] _ñ，（1），和聚[[二水[μ ₄ -2,5-双（1- ħ -1,2,4-三唑-1-基）terephthalato]镍（II）]二水合物]，{[镍（C ₁₂ H ₆ N ₆ O ₄）（H分离出（₂ O）₂ ]·2H ₂ O} _n（2）。两种聚合物均已通过FT-IR光谱，元素分析和单晶X射线衍射分析进行了表征。复合物具有相似的二维分层结构和协调模式。此外，二维分层结构具有不同的分子间氢键相互作用和π-π堆积相互作用，形成了基于4 ^4个子网的两个不同的三维超分子网络。结构变化取决于金属阳离子的性质。变温磁化测量的结果（χ_中号T形和χ_中号^-1 -T）表明复合物（1）和（2）显示反铁磁行为。