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Acta Cryst. (2002). E58, o1253-o1254 [ doi:10.1107/S1600536802018883 ]
Abstract: In the crystal structure of the title compound, C4H4N2O2, the pyrazine N,N'-dioxide molecules are located on centres of inversion. The molecules are stacked in the direction of the crystallographic a axis and are connected via C-H
O hydrogen bonding.
Online 18 October 2002
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