Synthesis and Structural Insights of Transition Metal Complexes Assembled by 1,4-Cyclohexanedicarboxylic Acid and 1,10-Phenanthroline

In this study, a series of transition metal complexes involving Zn(II), Cd(II) and Ni(II) were synthesized using 1,4 - Cyclohexane dicarboxylic acid (CHDA) and 1,10 - Phenanthroline (Phen) as co-ligands. These bidentate and flexible ligands were selected for their ability to form stable and multifunctional coordination frameworks. Comprehensive characterization was performed using FT-IR, PXRD, TGA, SEM, and EDAX techniques to evaluate the structural, thermal, and morphological attributes of the complexes. FT-IR confirmed coordination via carboxylate oxygen and nitrogen atoms, while PXRD revealed varying degrees of crystallinity influenced by metal-ligand interactions. TGA demonstrated distinct thermal decomposition profiles, indicating the formation of thermally stable metal oxides. SEM analysis showed metal-specific morphologies, ranging from amorphous to crystalline textures. The results underscore the potential of these complexes in applications such as catalysis, sensing, and materials engineering, where thermal stability and structural tunability are critical.