Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 1 (January 2012)

organic compounds

qk2022 scheme

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-HO hydrogen bonds involving the barbiturate rings. Attached to both sides of these ribbons via N-HO hydrogen bonds are the trimethylammonium cations. C-HO hydrogen bonds are also observed.


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