科研之友
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摘要
The title compound, C7H8N2O4, is an important precursor of bi- or multidentate ligands. The structure contains two molecules linked together via intermolecular N-H center dot center dot O and N-H center dot center dot center dot N hydrogen bonds and intermolecular C-H center dot center dot center dot O contacts, resulting in a two-dimensional network. All atoms except for methyl H atoms lie on crystallographic mirror planes.
