Open AccessReversible Redox Chemistry of Anionic Imidazole-2-thione-Fused 1,4-Dihydro-1,4-diphosphinines
Author(s) -
Mridhul R. K. Ramachandran,
Gregor Schnakenburg,
Moumita Majumdar,
Zsolt Kelemen,
Dalma Gál,
László Nyulászi,
Renè T. Boeré,
Rainer Streubel
Publication year - 2022
Publication title -
inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 233
eISSN - 1520-510X
pISSN - 0020-1669
DOI - 10.1021/acs.inorgchem.1c03620
Subject(s) - chemistry , redox , cyclic voltammetry , imidazole , electrochemistry , combinatorial chemistry , tricyclic , inorganic chemistry , medicinal chemistry , organic chemistry , electrode
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.