One Dinuclear Copper(II) Polymer Based on N-(Pyridine-3-Sulfonyl Amino)-Acetate: Synthesis, Structure, and Magnetic Analysis

Resumo

The reaction of CuCl₂ · 2H₂O with N-(pyridine-3-sulfonyl amino)-acetate (H₂L) in ethanol, water and 4,4′-Bipy under solvothermal conditions leads to the formation of a dinuclear copper polymer {[Cu₂(L)₂(4,4′-Bipy)(H₂O)₂] · H₂O · CH₃OH}_n (I). The polymer was characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and X-ray single-crystal diffraction (CIF file CCDC no. 1543747). The results showed that polymer belongs to the triclinic system, \(P\bar 1\) space group. TG curve shows that polymer I first removes water molecules, and then the ligand split for polymers I, and the remained residue is CuO. The magnetic measurement reveals the N-(pyridine-3-sulfonyl amino)-acetate as bridge ligand can mediate the antiferromagnetic coupling interaction between magnetic centers.