Correlated substituent rotation in the 1,2-benzenedisulfonate anion: the structure of the hydrated potassium salt

Abstract

Structure determinations have previously been recorded on the dipotassium and potassium tetramethylammonium salts of 1,2-benzenedisulfonic acid (methanol solvate and hydrate, respectively), as a platform for examining the gear-like interactions of adjacent sulfonate substituents on the aromatic ring. The present report records a single crystal X-ray study of the hydrated potassium salt, showing it to be 8K₂[(O₃S)₂C₆H₄] · 11H₂O, with eight independent anions in the asymmetric unit, enabling a more broadly-based consideration of substituent dispositions.

Keywords:

• Crystal structure
• Benzenedisulfonate
• Potassium
• Conformation

Acknowledgments

We are grateful to the Australian Research Council for continued support.