Studies on the Formation of Metal Sulphate: 2-Furoic Acid Complexes (Metal: Mg, Mn, Fe, Ni, Cu, Zn, Cd)

This study investigates the formation of metal-2-furoic acid complexes in aqueous solutions using conductometry. Metal sulphates of Mg, Mn, Fe, Ni, Cu, Zn, and Cd were reacted with 2-furoic acid to elucidate complex formation. The Job’s method, mole ratio method and slope ratio methods are aimed to determine the stoichiometry and nature of the complexes. Colorimetric analysis proved limited due to its dependence on solution coloration, while conductometric studies provided more conclusive insights into complex formation. Job’s and mole ratio methods did not definitively confirm complexation; however, the slope ratio method indicated that magnesium, manganese, nickel, zinc, and cadmium predominantly form 1:1 metal-ligand complexes, whereas copper potentially forms a 1:2 complex. Molar conductance analyses further supported the formation of these complexes in solution, although solid-phase isolation resulted in phase separation into precursors. Overall, the findings demonstrate the formation of metal-sulfate and 2-furoic acid complexes in solution, highlighting the efficacy and limitations of different analytical techniques in characterizing metal-ligand interactions.