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Preparation and Characterization of Pure Thiosulfuric Acid
Author(s) -
Hopfinger Mathias,
Zischka Florian,
Seifert Mathias,
Kornath Andreas J.
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800105
Subject(s) - tautomer , anhydrous , chemistry , characterization (materials science) , quantum chemical , quantum chemistry , computational chemistry , infrared spectroscopy , inorganic chemistry , crystallography , organic chemistry , molecule , materials science , nanotechnology , supramolecular chemistry
Pure thiosulfuric acid has not been prepared yet, although it is described in most textbooks of inorganic chemistry. Furthermore, no experimental evidence for the structure of thiosulfuric acid is known. Theoretical calculations predict the (SH)(OH) tautomer to be more stable than the (OH)(OH) tautomer. In this work we present the synthesis and spectroscopical characterization of pure thiosulfuric acid. X 2 S 2 O 3 ( X = H, D) was obtained from the reaction of dry Na 2 S 2 O 3 with anhydrous HF at –60 °C. The experimental vibrational and NMR spectra together with quantum chemical calculations provide evidence for the predicted (SH)(OH) tautomeric structure.