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Acta Cryst. (2005). E61, o518-o520 [ doi:10.1107/S1600536805002485 ]
Abstract: The title compound [systematic name: 4,4',4'',4'''-methanetetrayltetracarboxylic acid-dimethyl sulfoxide-toluene (1/4/1)], C29H20O8, crystallizes from dimethyl sulfoxide (DMSO)/toluene to yield a structure in which the four carboxylic acid groups of each molecule donate a single hydrogen bond to the O atom of four molecules of DMSO. Packing of the resulting aggregates, which have crystallographic twofold symmetry, leaves space for the inclusion of partially disordered molecules of toluene, leading to the formation of crystals of overall composition tetrakis(4-carboxyphenyl)methane-dimethyl sulfoxide-toluene (1/4/1).
Online 5 February 2005
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