Dithiolenes have been investigated as a family of ligands in coordination chemistry by their diverse applications in catalysis, sensors, photosensitizers, biomaterials, among others. These type of ligands possesses fascinating redox and magnetic properties as their ability to exhibit excellent activity near the low energy absorption range at the visible and IR regions.  Their structure containing a ring with two sulfur atoms that act like donors confers the ability to have different type of functional groups with several coordinating functionalities.  Spectroscopical properties of the dithiolene system 3,3-[(2-sulfanylidene-1,3-dithiole-4,5-diyl)bis(sulfanediyl)]bis(pentane-2,4-dione) in its di-enol tautomeric form was studied as a potential non-innocent ligand with four coordination sites. In this work, spectroscopical and electrochemical study of new dithiolene systems were investigated. These new systems with butanedioic acid and 3,4-dihydroxybenzyl moieties are expected to provide the potential to coordinate metal ions such as nickel, iron, and manganese for a future biomedical application as Photothermal agents and Magnetic Resonance Imaging (MRI) contrast agents as a tool to improve early cancer detection. Characterization of these new dithiolene systems were performed by FT-IR, NMR, XRD and UV-Vis techniques and will be discussed herein.

Synthesis, spectroscopical and electrochemical characterizations of metal complexes with new dithiolene systems

ACS Spring 2022

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