Solvent‐free Synthesis, Characterization and Solvent‐Vapor Interaction of Zinc(II) and Copper(II) Coordination Polymers containing Nitrogen‐donor Ligands

Abstract

Coordination polymers of [Zn(INA)2] (1) (INA = isonicotinate), [Cu2(mal)2(H2O)2(bipy)] (2) (mal = malonate, bipy = 4,4‐bipyridine), and [Zn2(OAC)4(bipy)2] (3) (OAC = acetate) were prepared using mechanochemical grinding and heating methods. The materials were characterized with elemental analysis, FT‐IR spectroscopy, TGA, SEM, EI‐MS, BET, and PXRD. Comparison of PXRD patterns of the materials with patterns simulated from single‐crystal X‐ray diffraction data allowed identification of the products. Compared to conventional synthetic techniques such as solvothermal/hydrothermal solvent‐based methods, solvent‐free method was found to be simple, highly efficient, and environmentally friendly especially for the preparation of these coordination polymers on a large scale. Solvent‐vapor interaction properties of 1, 2, and 3 were investigated by exposure of the compounds to water and methanol at room temperature.

Impact of Isonicotinic Acid Blending in Chitosan/Polyvinyl Alcohol on Ripening-Dependent Changes of Green Stage Tomato

“…For example, the appearance of the absorption peaks related to the deformation vibration of the pyridine ring of INA at slightly higher wavelengths of 775 cm −1 and 713 cm −1 could confirm that the pyridyl N atom was not coordinated. The nonappearance of absorption bands around 1700 cm −1 in the CS/PVA/INA formulation revealed that the COOH groups of the ligand of INA were deprotonated; a similar observation was reported [ 40 , 41 ]. The previous observations support the role of INA carboxylate in the formation of ionic crosslinking bonds with amino groups of CS.…”

Coordination polymers based on mixed carboxylate ligands: synthesis and thermal studies

“…3a). An initial 9.406 % mass loss attributed to the removal of three coordinated water molecules [28,29] was observed upon continued heating of the complex 1 from 200 ºC to 517 ºC. A two-step decomposition process was observed from the TGA curve with the first decomposition process observed between 200 ºC to 517 ºC, while the second decomposition process was observed between 517 ºC to 775 ºC.…”

“…Research interest has increased in the synthesis of coordination polymers/networks because of their potential usage in catalysis, molecular separation, luminescence, gas storage, and sorption. The extent to which a coordination polymer is robust at high temperature and its structural stability in the presence of various organic, inorganic and adverse conditions determines its effectiveness [11].…”

Synthesis and Characterization of 2D Metal-Organic Frameworks for Adsorption of Carbon Dioxide and Hydrogen

“…The packing in Figure 7B is a zig-zag 2D layered network. The packing is in an offset position with approximately equi-distances between the layers (Mehlana et al, 2015a;Tella et al, 2017). Although the two MOFs have diffrenent geometries around the metal center and crystallize in different space groups, they exhibit the same sql topology.…”