Acta Cryst. (2003). E59, o1205-o1207  [ doi:10.1107/S1600536803016295 ]

Benzene-1,2,4,5-tetracarboxylic acid dimethyl sulfoxide disolvate: a redetermination at 150 K

S. H. Dale and M. R. J. Elsegood

Abstract: The title compound, C₁₀H₆O₈.2C₂H₆OS, one of the few known examples of the cocrystallization of pyromellitic acid with common organic solvents, has been previously analysed by single-crystal X-ray diffraction at 296 K [Jin, Pan, Shen, Li & Hu (2003). Acta Cryst. C59, o205-o206]. We present here a redetermination at low temperature (150 K). The centrosymmetric compound crystallizes in space group P and exhibits co-operative strong (acid)O-HO(solvent) and weaker (solvent)C-HO(acid) hydrogen-bonding interactions, giving rise to a one-dimensional ribbon structure along the bc diagonal of the unit cell.

Online 31 July 2003

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