Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 1 (January 2012)

organic compounds

Acta Cryst. (2012). E68, o29-o30    [ doi:10.1107/S1600536811051610 ]

Trimethyl­ammonium 2,6-dioxo-5-(2,4,6-trinitro­phen­yl)-1,2,3,6-tetra­hydro­pyrimidin-4-olate

D. Kalaivani, M. Buvaneswari and S. Rajeswari

Abstract: In the title barbiturate salt (trivial name: trimethyl­ammonium 2,4,6-trinitro­phenyl­barbiturate), C3H10N+·C10H4N5O9-, the asymmetric unit contains two sets of anion-cation moieties. The dihedral angle between the rings in the anions are 44.0 (3) and 45.7 (3)°. Adjacent anions are connected into ribbons along [100] through R22(8) ring motifs formed by N-H...O hydrogen bonds involving the barbiturate rings. Attached to both sides of these ribbons via N-H...O hydrogen bonds are the trimethyl­ammonium cations. C-H...O hydrogen bonds are also observed.

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