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Acta Cryst. (2004). E60, o716-o717 [ doi:10.1107/S1600536804007500 ]
Abstract: In the title planar centrosymmetric molecule, C10H10N2O4, multiple-bond character remains essentially localized: C-O/N = 1.202 (3) and 1.143 (3) Å, and central C=C 1.344 (4) Å.
Online 9 April 2004
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