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Acta Cryst. (2013). E69, o201
[ doi:10.1107/S1600536812051963 ]


D. P. da Costa, S. M. Nobre, B. G. Lisboa, J. R. de M. Vicenti and D. F. Back

Abstract: The asymmetric unit of the title compound, C16H16N2O4, contains one half-molecule, the whole molecule being generated by an inversion center located at the mid-point of the C-C bond of the central ethane group. An intramolecular O-H...O hydrogen bond forms an S(6) ring motif. In the crystal, molecules are connected via N-H...O hydrogen bonds, generating infinite chains along [1-10].

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