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catena-Poly[[diaquabis(1H-imidazole-κN3)cobalt(II)]-μ-2,3,5,6-tetrachloroterephthalato-κ2O1:O4]
In the title compound, [Co(C8Cl4O4)(C3H4N2)2(H2O)2]n, the CoII ion displays a distorted octahedral coordination geometry with two O atoms from two monodentate tetrachloroterephthalate dianions, two N atoms from two imidazole molecules and two O atoms from two water molecules. The CoII ions are connected via the tetrachloroterephthalate dianions into a chain running along the crystallographic [110] direction. Adjacent chains are linked into a two-dimensional network arranged parallel to (010) by classical N—H
O and O—HO hydrogen bonds.
O and O—HO hydrogen bonds.organic compoundsOpen access
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The anion of the title salt, 2[C(NH2)3]+·C2N8O22−, lies on a center of inversion and its two five-membered rings are coplanar. The guanidinium cation forms N—HO and N—HN hydrogen bonds to the anion, generating an eight-membered ring. Other hydrogen bonds lead to the formation of a three-dimensional network.
O and N—HN hydrogen bonds to the anion, generating an eight-membered ring. Other hydrogen bonds lead to the formation of a three-dimensional network.organic compoundsOpen access
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The complete molecule of the compound, C6H4N8O3, is generated by a crystallographic twofold rotation axis that runs through the central ring. The flanking ring is twisted by 20.2 (1)° with respect to the central ring. One of the amino H atoms forms an intramolecular N—HN hydrogen bond; adjacent molecules are linked by N—HN hydrogen bonds forming a chain running along [10-2].
N hydrogen bond; adjacent molecules are linked by N—HN hydrogen bonds forming a chain running along [10-2].organic compoundsOpen access
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The title salt, C12H9N2+·CH3O4S−, contains an almost planar phenazinium cation [largest deviation from the least-squares plane = 0.040 (3) Å] and a methyl sulfate anion. The sulfate moiety of the latter is disordered over two sets of sites in a 0.853 (5):0.147 (5) ratio. In the crystal, the cations and anions are arranged alternately in layers parallel to (010). The cations pack along [100] with a tilt angle of 28.96 (4)° between this axis and the mean plane and are linked through interplanar π–π interactions [shortest interplanar distance = 3.421 (4) Å]. N—HO hydrogen-bonding between the cations and anions is also observed.
O hydrogen-bonding between the cations and anions is also observed.organic compoundsOpen access
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In the title compound, C12H9N2+·Br−, the protonated tricyclic ring system is slightly twisted, with a dihedral angle of 3.9 (1)° between the two outer benzene rings. In the crystal, N—HBr and C—HBr hydrogen bonds link two cations and two bromide anions into centrosymmetric assemblies, which are further packed into stacks along [010] via π–π interactions between the aromatic rings [centroid–centroid distance = 3.725 (4) Å].
Br and C—HBr hydrogen bonds link two cations and two bromide anions into centrosymmetric assemblies, which are further packed into stacks along [010] via π–π interactions between the aromatic rings [centroid–centroid distance = 3.725 (4) Å].organic compoundsOpen access
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The molecule of the title compound, C12H14Cl2O2, lies about an inversion center. The six-membered ring is almost planar, with the largest deviation from the least-squares plane being 0.014 (4) Å. The molecular conformation is stabilized by a weak intramolecular C—HO hydrogen bond. In the crystal, molecules are packed into stacks along the c-axis direction, with an intercentroid separation of 4.811 (2) Å. Neighboring molecules within the stack are related by the c-glide plane.
O hydrogen bond. In the crystal, molecules are packed into stacks along the c-axis direction, with an intercentroid separation of 4.811 (2) Å. Neighboring molecules within the stack are related by the c-glide plane.
