Acta Cryst. (2011). E67, o1659 [ doi:10.1107/S1600536811022410 ]
Abstract: The complete molecule in the title compound, C22H20N2O4, is generated by the application of an inversion centre. With the exception of the terminal acetylene groups [C-O-C-C = -78.02 (17)°], the remaining atoms constituting the molecule are essentially coplanar. The configuration around the C=N bond [1.282 (2) Å] is E. The formation of supramolecular chains mediated by C-HO interactions, occurring between methylene H and methoxy O atoms, is the most notable feature of the crystal packing.
Online 18 June 2011
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