By employing 5-(pyridin-3-yl)-1H-pyrazole-3-carboxylic acid ligand, a new coordination polymer [Cd(HPPC⁻)₂(H₂O)₂]_n (1) has been prepared via the one-pot solvothermal reation with CdI₂ and structurally characterized via elemental analysis, FT-IR spectroscopy, single-crystal X-ray diffraction analysis and X-ray powder diffraction. The results represented that 1 is a three-dimensional (3D) framework based on the 2D corrugated layers and Cd–O pillars, which can be considered as a (3,6)-connected trl topology with Schläfli symbol of {4·6²}₂{4²·6¹⁰·8³}. In this work, the photoluminescence and electrogenerated chemiluminescence (ECL) behavior of complex 1 were investigated and thermal stability was confirmed by TGA analysis. Meanwhile, the Brunauer–Emmett–Teller measurement of 1 was also conducted to address the porosity of this 3D structure. Complex 1 exhibited high intense ECL in dimethyl sulfoxide and after eight circulations the ECL efficiency still remained stable, thus providing the possibility for construction of potential polymers ECL materials. In addition, Hirshfeld surface analysis for 1 mapped with various functions and 2D fingerprint plots revealed that the H···H and O···H contacts outnumbered the other contacts in 1 (25.3% and 23.0% of the total interactions, respectively).

通过使用 5-(pyridin-3-yl)-1 H -pyrazole-3- 羧酸配体, 一种新的配位聚合物 [Cd(HPPC ^- ) ₂ (H ₂ O) ₂ ] _n ( 1 ) 已通过以下方式制备与 CdI ₂进行一锅溶剂热反应，并通过元素分析、FT-IR 光谱、单晶 X 射线衍射分析和 X 射线粉末衍射进行结构表征。结果表明1是基于 2D 波纹层和 Cd-O 柱的三维 (3D) 框架，可以认为是 (3,6) 连接的trl拓扑，Schläfli 符号为 {4·6 ² } ₂{4 ² ·6 ¹⁰ ·8 ³ }。在这项工作中，研究了配合物1的光致发光和电致化学发光 (ECL) 行为，并通过 TGA 分析证实了热稳定性。同时，还进行了1的 Brunauer-Emmett-Teller 测量以解决此 3D 结构的孔隙率。配合物1在二甲亚砜中表现出高强度的ECL，经过8次循环后ECL效率仍然保持稳定，从而为构建潜在的聚合物ECL材料提供了可能。此外，Hirshfeld 表面分析为1映射到各种函数和 2D 指纹图显示 H···H 和 O···H 接触数量超过1 中的其他接触（分别为总交互的 25.3% 和 23.0%）。