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N-benzyladeninium nitrate, ( 1), CHN NO crystallizes in P2/ c, with a = 15.0035(13), b = 5.3788(5), c = 16.8954(13) Å, β = 107.331(6)°, Z = 4 and N-benzyladeninium 3-hydroxy picolinate, ( 2), CHN CHNO, crystallizes in P1, with a = 8.3017(4), b = 14.6170(7), c = 14.7909 (8) Å, α = 78.801 (4), β = 81.979 (4),γ = 88.849 (4)°, Z = 4. In both the salts, the cation exists as N(7)H tautomer with protonation at the N atom. The dihedral angle of 76.64 (16)° for ( 1), 67.91(12)° for (cation A) and 68.27 (13)° for (cation B) in ( 2), between the adenine plane and phenyl ring plane, the distal orientation of the N6 substituent with respect to the imidazole ring and the free N1 position, make these benzyladeninium cations meet all the requirements necessary for cytokinin activity. The crystal structures are stabilized by N-H···N, N-H···O, C-H···O hydrogen bonds and C-H···π stacking interaction between symmetry related benzyladenine molecule. Graphical Abstract: Supramolecular architectures in the crystal structures of N-Benzyladeninium nitrate and N-Benzyladeninium 3-hydroxy picolinate salts. [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]

Two new crystalline salts, namely, hypoxanthinium bromide monohydrate, C 5 H 5 N 4 O + ·Br - ·H 2 O ( I ) and xanthinium bromide monohydrate, C 5 H 5 N 4 O 2 + ·Br - ·H 2 O ( II ), were synthesized and characterized by single-crystal X-ray diffraction technique and Hirshfeld surface analysis. The hypoxanthinium and xanthinium cations in salts I and II are both in the oxo-N(9)-H tautomeric form. The crystal packing of the two salts is governed predominantly by N-H⋯O, N-H⋯Br, C-H⋯Br and O-H⋯Br inter-actions described by R 2 3 (9) and R 2 2 (8) synthons. The crystal packing is also consolidated by carbon-yl⋯π inter-actions between symmetry-related hypoxanthinium ( HX + ) cations in salt I and xanthinium cations ( XA + ) in salt II . The combination of all these inter-actions leads to the formation of wave- and staircase-like architectures in salts I and II , respectively. The largest contributions to the overall Hirshfeld surface are from Br⋯H/H⋯Br contacts (22.3% in I and 25.4% in II ) ., (© Sathya et al. 2022.)

The title mol-ecular salt, C10H12N3O3S(+)·C7H3N2O7 (-), protonation occurs at the amino N atom attached to the benzene ring of sulfamethoxazole. In the anion, there is an intra-molecular O-H⋯O hydrogen bond and the cation is linked to the anion by an N-H⋯O hydrogen bond. In the extended structure, the cations and anions are linked via N-H⋯O, N-H⋯N and C-H⋯O hydrogen bonds, forming a three-dimensional framework.