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Abstract
In the title compound, C19H18N3 +.C4H2N3O4 −, the dihedral angles between the phenyl rings and the plane defined by the central guanidinium fragment are in the range 41.3 (1)–66.6 (1)°. The pyrimidine ring of the anion is distorted towards a boat conformation and the nitro group is rotated 11.4 (2)° out of the uracil plane. Hydrogen bonds assemble the ions in infinite helical chains along the b axis.
Highlights
C19H18N3+.C4H2N3O4, the dihedral angles between the phenyl rings and the plane defined by the central guanidinium fragment are in the range 41.3 (1)
The pyrimidine ring of the anion is distorted towards a boat conformation and the nitro group is rotated 11.4 (2)
Hydrogen bonds assemble the ions in infinite helical chains along the b axis
Summary
R factor = 0.051; wR factor = 0.154; data-to-parameter ratio = 18.5. C19H18N3+.C4H2N3O4, the dihedral angles between the phenyl rings and the plane defined by the central guanidinium fragment are in the range 41.3 (1)–. The pyrimidine ring of the anion is distorted towards a boat conformation and the nitro group is rotated 11.4 (2). Hydrogen bonds assemble the ions in infinite helical chains along the b axis
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