Fig. 2.

Synthesis and characterization of Mg-CP. a Reagents and conditions for the synthesis of the coordination polymer Mg-CP from organic ligand AzSA. Schematic representation of coordination modes in Mg-CP. Blue and magenta represent magnesium and oxygen atoms, respectively. b FT-IR spectra of AzSA and Mg-CP showing changes in the region corresponding to O-H stretching and the asymmetric and symmetric stretching frequencies of the carbonyl bond. c Expanded portion of the region (1750–1400 cm⁻¹), showing the differences in the asymmetric and symmetric stretching bands of the carbonyl bond. d TGA of Mg-CP and AzSA. e ¹H NMR spectra of Mg-CP (blue) and AzSA (red) (500 MHz, CD₃OD)