Structure, Hirshfeld Surface Analysis and Electrochemical Properties of Ni(II)-based Coordination Polymer with Mixed Ligand

In this work, a novel complex [Ni(HL)(dib)(H 2 O) 2 ] n ( 1 ) was synthesized by hydrothermal method using 2-(4-carboxyphenoxy)terephthalic acid (H 3 L) as the main ligand and 1,4-di(1 H-imidazole-1-yl)benzene (dib) as an auxiliary N-donor linker. 1 exhibits a 4-connected two-dimensional (2D) topology with the point symbol {4 4 .6 2 }, and the 2D structure was further assembled to form a three-dimensional (3D) framework by intermolecular C-O···H hydrogen bonds. Moreover, a series of characterizations such as elemental analysis, thermogravimetry, 2D fingerprinting and Hirshfeld surface analysis were carried out for 1 , and its electrochemical properties were studied.