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.
Deacon, G. B., Harika, R., Junk, P. C., Skelton, B., & White, A. (2009). Correlated substituent rotation in the 1,2-benzenedisulfonate anion : the structure of the hydrated potassium salt. Journal of Coordination Chemistry, 62(19), 3098-3109. https://doi.org/10.1080/00958970903033294