Synthesis, Characterization and Determination of the Crystal Structure of New Cadmium Coordination Polymers Based on Bridging Schiff-Base Pyridine Ligand; Investigation of Hirshfeld Surface Analysis

Abstract

Two new polymeric compounds of cadmium acetate and Schiff-base ligand 1,2-bis(1-(pyridine-4-yl)ethylydine)hydrazine, L, [Cd(OAc)2(L)]n ,(1) and [Cd(OAc)2(L)(H2O)]n , (2) were synthesized and characterized by single crystal X-ray diffraction analysis. Structural analysis reveals that both compounds were crystallized in monoclinic crystal system with P21/c and I2/a space group respectively. Coordination polymer 1 was synthesized by solvent evaporation method in dimethyl sulfoxide and has one-dimensional ladder like structure. Coordination polymer 2 was prepared by solvent diffusion method in the mixture of methanol and water solvent and its crystal structure was assembled from one-dimensional linear chains. Also the influence of effective interactions in the crystal packing of prepared compounds and the value of their contributions were investigated by Hirshfeld surface analysis.

Keywords

• "coordination polymer"
• "cadmium"
• "solvent effect"
• "crystal packing"
• "hirshfeld surface analysis"