{Reference Type}: Journal Article
{Title}: Synthesis and Structure of Protonated Sulfur Dioxide.
{Author}: Jessen C;Kornath AJ;
{Journal}: Angew Chem Int Ed Engl
{Volume}: 63
{Issue}: 20
{Year}: 2024 May 13
{Factor}: 16.823
{DOI}: 10.1002/anie.202401953
{Abstract}: Salts of protonated sulfur dioxide were synthesized by recrystallization of [FS(OX)2][SbF6] (X=H, D) in aprotic solvents at low temperatures. Hemiprotonated sulfur dioxide [(SO2)2H][Sb2F11] was obtained from the solvent SO2 and the monoprotonated sulfur dioxide [OSOD][Sb2F11], using 1,1,1,2-tetrafluoroethane as solvent. For both compounds, single crystals were obtained and an X-ray structure analysis was conducted. Furthermore, the salts were characterized by Raman spectroscopy and the results were discussed together with quantum chemical calculations on the M06-2X/aug-cc-pVTZ level of theory.