metal-organic compounds
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In the title complex, [Na(C7H7O4S)]n, the NaI ion is coordinated in a slightly distorted pentagonal-bipyramidal environment by seven O atoms [Na—O = 2.3198 (16)–2.5585 (17) Å]. The 4-methoxybenzenesulfonate anions act as bis-chelating and bridging ligands, forming a two-dimensional polymer parallel to (001), which is further linked into a three-dimensional network by weak C—HO hydrogen bonds.
organic compounds
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In the title 3-cyanopyridine derivative, C21H19N3O4, the 3-cyano-substituted pyridine ring forms dihedral angles of 2.35 (5) and 41.60 (5)° with the unsubstituted pyridine and 2,4,5-trimethoxy-substituted benzene rings, respectively. The dihedral angle between the unsubstituted pyridine and benzene rings is 39.84 (5)°. The methoxy groups form Cmethyl—O—C—(C,N) torsion angles in the range 0.80 (15)–11.45 (15)°. In the crystal, molecules related by 21 screw axes are linked by weak C—HN hydrogen bonds along [010]. In addition, weak C—Hπ interactions and π–π stacking interactions between pyridine rings, with a centroid–centroid distance of 3.6448 (6) Å, are observed.
organic compounds
Open access
In the title hydrated molecular salt, C22H25N2+·C6H4FO3S−·H2O, the cation displays whole molecule disorder over two sets of sites in a 0.780 (5):0.220 (5) ratio. The quinolinium ring system is essentially planar, with r.m.s. deviations of 0.0162 and 0.0381 Å for the major and minor disorder components, respectively. The dihedral angles between the mean plane of the quinolinium ring system and the benzene ring are 5.1 (3) and 7.7 (11)°, respectively, for the major and minor components in the cation. In the crystal, cations, anions and water molecules are linked into chains along [010] by O—HO hydrogen bonds and are further connected into a three-dimensional network by weak C—HO and C—HF interactions. In addition, π–π interactions with centroid–centroid distances of 3.634 (3), 3.702 (5) and 3.838 (5) Å are observed.