Acta Cryst. (2007). E63, m321-m322  [ doi:10.1107/S1600536806055590 ]

Sodium 3,5-dinitropyridin-4-olate dihydrate

R. Fan, D.-D. Li, J.-B. She, G.-F. Zhang and S. W. Ng

Abstract: The six-membered ring of the 3,5-dinitropyridin-4-olate anion in the title dihydrated sodium derivative, Na⁺·C₅H₂N₃O₅^-·2H₂O, exists in the pyridone form with C=C and C=O double bonds, and the negative charge formally residing on the N atom. The anions link the Na⁺ ions, each of which is coordinated by four water molecules, into a linear chain that runs along the c axis of the unit cell. The chains are bridged by the water molecules into a sheet structure. The anion and the Na⁺ ion lie on a mirror plane.

Online 6 January 2007

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