Four new coordination polymers, namely, [Zn₂(L)₂(1,3-bdc)(H₂O)₂]_n(1), [Cd₂L₂(Cl)₂]_n·0.5nH₂O (2), [Cd₂L₂(adip)]_n·2nH₂O (3), and [CdLCl]_n (4) were solvothermally synthesized by reaction of Zn(NO₃)₂·6H₂O, CdCl₂·H₂O with an asymmetrical rigid N-heterocyclic carboxylatic acid (HL), where HL= 1-(4-carboxylphenyl)−3-(prazin-2-yl)−1H-1,2,4-triazole, 1,3-bdc=benzene- 1,3-dicarboxylic acid, H₂adip = adipic acid, H₂glu = glutaric acid. Compound 1 is a 1D ladder chain. Compound 2 is a (3,6)-connected network with the Point symbol of (4²·6)₂(4⁴·6²·8⁸·10). Compound 3 displays a intriguing (3,3,4,4)-connected topological net with the Point symbol of (4·6⁴·8)(4·7²)(4²·6·7²·9)(4²·6). Compound 4 presents a new (3,5)-connected topological net with the Point symbol of (3·4·5)(3²·4·5·6²·7⁴). In addition, the thermal stabilities and photoluminescence properties of these compounds were also studied. Dramatically, compound 3 shows the high selectivity and sensitivity for Fe³⁺ cation via a luminescence quenching effect.

四种新的配位聚合物，即[Zn ₂（L）₂（1,3-bdc）（H ₂ O）₂ ] _n （1），[Cd ₂ L ₂（Cl）₂ ] _n ·0.5nH ₂ O （ 2），通过Zn（NO ₃）₂ ·6H ₂ O，CdCl ₂ ·H的反应溶剂热合成[Cd ₂ L ₂（adip）] _n ·2nH ₂ O （3）和[CdLCl] _n（4）。_2个带不对称刚性N杂环羧酸（HL）的O，其中HL = 1-（4-羧基苯基）-3-（吡嗪-2-基）-1H-1,2,4-三唑，1,3-bdc =苯-1,3-二羧酸，H ₂ ADIP =己二酸，H ₂谷氨酸=戊二酸。化合物1是一维梯形链。化合物2是一个（3,6）连接的网络，其点符号为（4 ² ·6）₂（4 ⁴ ·6 ² ·8 ⁸ ·10）。化合物3显示一个有趣的（3,3,4,4）连接的拓扑网，其点符号为（4·6 ⁴ ·8）（4·7 ²）（4 ² ·6·7 ² ·9）（4 ^2个·6）。化合物4呈现了一个新的（3,5）连接的拓扑网，其点符号为（3·4·5）（3 ² ·4·5·6 ² ·7 ⁴）。另外，还研究了这些化合物的热稳定性和光致发光性质。戏剧性地，化合物3通过发光猝灭效应显示出对Fe ³⁺阳离子的高选择性和敏感性。