Abstract
The structure of the title compound has been investigated in the solid state and in solution by X-ray and NMR methods. The crystals are monoclinic:P21/n,a=9.010(2),b=18.877(4),c=9.434(2) Å,β=113.06(1)°. The structure was solved by direct methods, and refined with 1764 unique reflections by full-matrix, least-squares toR=0.0607 (R w =0.0439). Although a two-fold symmetry of the molecule was suggested from NMR results, no approximate molecular symmetry elements were found in the crystalline state. Some intra- and intermolecular hydrogen bonds were observed.
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Krajewski, J.W., Gluziński, P., Sałański, P. et al. Synthesis, crystal and molecular structure of 1,7-diaza-4,10,13-trioxa-11,12-benzocyclopentadeca-2,6-dione. Journal of Crystallographic and Spectroscopic Research 22, 9–13 (1992). https://doi.org/10.1007/BF01161356
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DOI: https://doi.org/10.1007/BF01161356