organic compounds
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The title molecule, C18H21Cl2NO3S2, contains one chiral carbon center and the absolute sterochemistry has been confirmed as as R. An intramolecular N—HO hydrogen bond occurs and the dihedral angle between the benzene rings is 64.5 (1)°. In the crystal, the molecules are linked by weak C—HO hydrogen bonds, forming a zigzag chain structure extending along the c-axis direction.
metal-organic compounds
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In the title compound, [Fe(C5H5)(C9H6ClN2)], the two cyclopentadienyl rings are almost parallel, subtending a dihedral angle of 3.01 (5)°. The dihedral angle between the substituted cyclopentadienyl ring and the pyrimidinyl ring is 12.02 (1)°. The conformation of the two cyclopentadienyl rings in the ferrocenyl moiety is eclipsed.
organic compounds
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In the title compound, C11H9NO3, the dihedral angle between the isoxazole and phenyl rings is 19.79 (12), while the ester group is inclined to the isoxazole group by 12.14 (6)°. In the crystal, molecules are linked by C—HO hydrogen bonds, forming layers lying parallel to (010).
organic compounds
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In the title compound, C11H9NO3, the dihedral angle between the isoxazole and phenyl rings is 19.79 (12), while the ester group is inclined to the isoxazole group by 12.14 (6)°. In the crystal, molecules are linked by C—HO hydrogen bonds, forming layers lying parallel to (010).
research communications
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In the crystal, molecules are linked by N—HO hydrogen bonds, forming inversion dimers, which are linked by a further N—HO hydrogen bond, forming chains along [100]. There are intra- and intermolecular C—Hπ interactions present, the latter linking the chains to form a three-dimensional supramolecular structure.
data reports
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The title compound, {[Mn(C24H14N2O4)(C24H16N2O4)]·0.5H2O}n, was obtained by the reaction of manganese nitrate with the ligand 4,4′-(4,4′-bipyridine-2,6-diyl) dibenzoic acid under hydrothermal conditions. The water O atom is located on a twofold rotation axis. The Mn2+ ion is heptacoordinated by six O atoms and one N atom from the ligands. In this structure, the ligands adopts two different forms, one completely deprotonated and one with a protonated N atom (pyridinium) and a carboxylic acid function. In the crystal, N—HO and O—HO hydrogen bonds consolidate the packing, forming a three-dimensional framework.
data reports
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The title coordination polymer, {[Co2(C15H7O7)(OH)(C14H14N4)]·0.25H2O}n, was synthesized under hydrothermal conditions. The asymmetric unit contains two Co2+ ions, one L3− anion originating from 5-(4-carboxyphenoxy)isophthalic acid (H3L), one OH− ligand, one 1,4-bis[(1H-imidazol-l-yl)methyl]benzene (bix) ligand and one disordered lattice water molecule (occupancy 0.25). The two Co2+ ions have different environments. One has an octahedral O4N2 coordination sphere, defined by four O atoms from three carboxylate groups and one OH− ligand, and two N atoms from two symmetry-related bix ligands. The other has a trigonal-bipyramidal O5 coordination sphere resulting from three carboxylate groups and two OH− ligands. The dihedral angles between the two benzene rings in the L3− ligand and between the benzene ring and the two imidazole rings in the bix ligand are 67.05 (15), 75.27 (17) and 82.05 (17)°, respectively. Four neighbouring Co2+ ions are linked by six carboxylate groups and two μ3-OH ligands, forming a butterfly-shaped secondary building unit (SBU). These SBUs are connected by L3− anions into layers parallel to (1-10). Adjacent layers are cross-linked by the bix ligands, forming a three-dimensional framework that has a bimodal (3,8)-connected tfz-d topology. The disordered lattice water molecule is located in the voids of the framework and has OO and ON contacts of 2.81 (2) and 2.95 (2) Å, suggesting medium-strength hydrogen bonds. The title compound may be a good candidate for artificial eye lenses.
organic compounds
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In the title compound, C30H25N3O3, the central imidazole ring forms dihedral angles of 77.34 (6), 12.56 (6) and 87.04 (6)°, respectively, with the o-nitrobenzene ring and the phenyl substituents in the 5- and 4-positions. The molecular conformation is stabilized by weak intramolecular C—Hπ interactions. In the crystal, molecules are linked by O—HN hydrogen bonds, forming chains running parallel to the b-axis direction.
data reports
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In the title molecule, C14H18ClN5O2S, the six atoms of the 1,6-dihydropyridazine ring are essentially coplanar (r.m.s. deviation = 0.008 Å), and the dihedral angle between this and the 1,3,4-thiadiazole ring is 62.06 (10)°. In the crystal, centrosymmetrically related molecules are linked by intermolecular C-H-O hydrogen bonding to form a supramolecular dimer. The terminal ethyl group is statistically disordered over two positions.