Abstract
The asymmetric unit of compound (I), 4-fluoroanilinium picrate, C6H7NF+.C6H2N3O7− contain one 4-fluoroanilinium cation and one picrate anion whereas in compound (II), dicyclohexylaminium picrate, C12H22N+.C6H2N3O7− the asymmetric unit contains two sets of dicyclohexylaminium cation and picrate anion due to conformational difference between the molecules. In (I), all three nitro groups of the picrate anion are positionally disordered over two sites refined to major and minor components. The molecular ions of (I), interlinked through N–H‧‧‧O and C–H‧‧‧O hydrogen bonds forming two-dimensional supramolecular sheet along (-1 0 1) plane. Whereas in (II), the symmetry-independent molecules labeled as A and B molecule form independent one-dimensional supramolecular tape extending along (1 1 0) and (1 0 0) direction. The supramolecular tapes are interlinked through C–H‧‧‧O interaction to form three-dimensional network in the crystalline solid in (II).
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Kolandaivelu, S., Rajamoni, J. & Kandasamy, S. N-H…O, C-H… O hydrogen-bonded supramolecular frameworks in 4-fluoroanilinium and dicyclohexylaminium picrate salts. Struct Chem 31, 899–908 (2020). https://doi.org/10.1007/s11224-019-01471-1
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DOI: https://doi.org/10.1007/s11224-019-01471-1