One Novel 2D Co(II) Polymer with 1,2,3-Triazole Derivative: Crystal Structure, Fluorescence and Hirshfeld Surface Analysis

One new polymer [Co(L)(H2O)(2)](n) (1) was synthesized by 4-(ethoxycarbonyl)-5-methyl-1H-1,2,3-triazole-1-carboxylic acid (Emtc) under the in situ solvent thermal reaction (H2L = 1-(carboxymethyl)-5-methyl-1H-1,2,3-triazole-4-carboxylic acid). The title complex performs a wave-like 2D framework and the ligand H2L demonstrates the coordination mode as mu(4)-eta(2):eta(1)eta(1):eta(1). The crystal structure has been established by single-crystal X-ray diffraction, and characterized by FT-IR. Fluorescent property was investigated in this work. Hirshfeld surface analysis has also been carried out on 1, and obvious main intermolecular interactions are observed.