The formation of novel mixed-ligand fluoromanganate(III) complexes was achieved in aqueous medium, demonstrating the fluoride-assisted stabilization of Mn(III). These complexes were synthesized by reacting MnO(OH) and 40% HF with oxygen donor ligands such as mannitol and resorcinol. The resulting compounds are stable over long periods when stored in polythene bags. Consistency of the compounds can be assessed through manganese and fluoride content analysis or determination of the manganese oxidation state. The compounds exhibit poor solubility in common organic solvents and limited solubility in water. Characterization was conducted via elemental analyses, cyclic voltammetry, electronic spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy, and magnetic susceptibility measurements at room temperature. The data indicate a distorted octahedral geometry for the complexes. Additionally, the fluorescence and antibacterial activity of one of the complexes were investigated.

doi.org/10.32737/0005-2531-2025-4-42-51