IUCrData (Jul 2016)
5,7,12,14-Tetrahydro-5,14:7,12-bis([1,2]benzeno)pentacene-6,13-diol dimethylformamide disolvate
Abstract
The crystal lattice of the title compound, C34H22O2·2C3H7NO, at 173 K has monoclinic (P21/n) symmetry. Molecules are located on crystallographic centers of symmetry and have approximate non-crystallographic mmm symmetry, indicating that in solution the chemical and spectroscopic behavior would be that of a D2h molecule. The compound has applications in gas-separation membranes fabricated from polymers of intrinsic microporosity (PIM). The compound is the product of reduction of the corresponding quinone by Na2S2O4 in DMF/NaHCO3.
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