Reversible redox chemistry of anionic imidazole-2-thione-fused 1,4-dihydro-1,4-diphosphinines
Ramachandran, Mridhul R. K.
Boeré, René T.
Streubel, Rainer K.
Anionic 1,4-dihydro-1,4-diphosphinines were synthesized from tricyclic 1,4-diphosphinines and isolated as blue powdery salts M[2a–2c]. Reaction of solutions of these monoanions with iodomethane led to P-methylated compounds 3a–3c. An oxidation/reduction cycle was examined, starting from solutions of K[2a] via P–P coupled product 4a and back to K[2a], and the recyclability and redox chemistry of this cycle were confirmed by experimental and simulated cyclic voltammetry analysis, which is proposed as a potential 2-electron cathode for rechargeable cells. TD-DFT studies were used to examine species that might be involved in the process.
Open access article. Creative Commons Attribution 4.0 International License (CC BY 4.0) applies
Ramachandran, M. R. K., Schnakenburg, G., Majumdar, M., Kelemen, Z., Gal, D., Nyulaszi, L., Boeré, R. T., & Streubel, R. K. (2022). Reversible redox chemistry of anionic imadazole-2-thione-fused 1,4-dihydro-1,4-diphosphinines. Inorganic Chemistry, 61(11), 4639-4646. https://doi.org/10.1021/acs.inorgchem.1c03620