Acta Cryst. (2002). E58, o72-o73 [ doi:10.1107/S1600536801021420 ]
Abstract: The title compound, C29H35ClO9S2, is a tris(hydroxymethyl)ethane derivative with an asymmetric carbon in the propane skeleton. Surprisingly, in the unit cell, two stereoisomers with different configuration at this centre are present. Their relative orientation gives a nearly centrosymmetric arrangement, and all corresponding bond lengths and angles are comparable in the two molecules. Two additional chiral centres with S-configurations present in the camphorsulfonic acid group have to be the same in both molecules, rendering the two compounds diastereomers.
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