Hydroxy Mercapto Methylene: The Missing H 2 CSO Isomer.
Markus SchauermannPeter Richard SchreinerPublished in: The journal of physical chemistry letters (2022)
We report the isolation of hydroxy mercapto methylene (HO-C̈-SH) under cryogenic conditions via pyrolysis of 2-ethoxy-2-thioxo-acetic acid. The two most stable carbene rotamers form via extrusion of ethylene and CO 2 from this precursor. This donor-stabilized carbene represents a hitherto uncharacterized CH 2 SO species and the first spectroscopically characterized free mercapto carbene. CCSD(T)/cc-pVTZ computations support our findings.
Keyphrases