Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)


organic compounds



rk2402 scheme

Acta Cryst. (2013). E69, o908-o909    [ doi:10.1107/S1600536813013068 ]

5,5'-(Ethyne-1,2-diyl)diisophthalic acid dimethyl sulfoxide tetrasolvate

A. S. Münch, F. Katzsch, E. Weber and F. O. R. L. Mertens

Abstract: In the title compound, C18H10O8·4C2H6OS, the mid-point of the triple bond of the main molecule is located on a special position, i.e. about an inversion center. The carboxyl groups are twisted slightly out of the planes of the aromatic rings to which they are attached, making dihedral angles of 24.89 (1) and 7.40 (2)°. The cystal packing features strong O-H...O hydrogen bonds, weaker C-H...O interactions and O...S contacts [3.0981 (11) Å] and displays channel-like voids extending along the a-axis direction which contain the dimethyl sulfoxide solvent molecules.


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