“Synthesis, Spectroscopic, and Structural Elucidation of Mixed-Ligand Coordination Complexes of Divalent and Trivalent Transition Metal Ions” (2011) International Journal of Engineering and Science Research, 1(2), pp. 1–10. Available at: https://ijesr.org/index.php/ijesr/article/view/1385 (Accessed: 12 December 2025).