Sensitivity to NH Vapor: Synthesis and Characterization of Five New Coordination Polymers Based on 2,2-Dimethylglutaric Acid and Bis(triazole)-Derived Ligands.

Five new coordination polymers (CPs) were obtained as a result of hydrothermal reactions of 2,2-dimethylglutaric acid (Hdmg) and 1,4-bis(1-1,2,4-triazol-1-ylmethyl)benzene ()/1,2-bis(1-1,2,4-triazol-1-ylmethyl)benzene () ligands with some metal ions [Co(μ-dmg)(μ-obtx)] (), [Zn(μ-dmg)(μ-obtx)] (), [Cd(μ-dmg)(μ-obtx)] (), [Co(μ-dmg)(μ-pbtx)] (), and [Cd(μ-dmg)(HO)(μ-pbtx)] (). All of the compounds were characterized by elemental analysis, FT-IR spectroscopy, single-crystal X-ray diffraction, powder X-ray diffraction, and thermal analysis techniques. The single-crystal X-ray studies show that all compounds exhibit 2D layer structures. To examine the ammonia sensing properties of five new coordination complexes (), the absorption and emission spectra of CPs embedded in ethyl cellulose thin films were measured by exposure to different concentrations of ammonia (NH) vapor. The [Co(μ-dmg)(μ-pbtx)] ()-based sensor agent was found to show promising sensor properties in detecting NH vapor.