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In the title compound, [K(C10H5ClO2F3)(H2O)]n, the two independent K+ ions are located on a twofold rotation axis. For each of the cations, the distorted cubic coordination environment is defined by two F and four O atoms of symmetry-related 1,4-chloro­phenyl-4,4,4-tri­fluoro­butane-1,3-dionate anions and by two O atoms of water mol­ecules. The μ4-bridging character of the anion and the μ2-bridging of the water mol­ecule lead to the formation of layers parallel to (100). The coordinating water mol­ecules are also involved in O—H...O hydrogen bonds that reinforce the mol­ecular cohesion within the layers, which are stacked along [100]. The β-diketonate anion is not planar, with an angle of 31.78 (10)° between the mean planes of the diketonate group and the chloro­phenyl ring.

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In the title molecular salt, C6H10N22+·2ClO4, the Cl—O bond lengths [anion 1: 1.369 (3)–1.415 (3); anion 2: 1.420 (2)–1.441 (2) Å] and the O—Cl—O angles [anion 1: 105.4 (2)–111.8 (4); anion 2: 107.8 (1)–110.3 (1)°] indicate a slight distortion of the perchlorate anions from regular tetra­hedral symmetry. In the crystal, the components are linked into columns along the a-axis direction via N—H...O and C—H...O hydrogen bonds, with stacks of the organic mol­ecules being surrounded by stacks of perchlorate anions.

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The asymmetric unit of the title compound, C24H16N2·0.5CH3OH, is comprised of two independent bathophenanthroline mol­ecules (systematic name: 4,7-diphenyl-1,10-phenanthroline) and one methanol mol­ecule. The bathophenanthroline mol­ecules are not planar as there is a considerable rotation of all terminal phenyl rings with respect to the central phenanthroline units [dihedral angles in the range 52.21 (12)–62.14 (10)°]. In addition, a non-negligible torsion is apparent in one of the phenanthroline units: the angle between the mean planes of the two pyridine rings is 14.84 (13)°. The methanol solvent mol­ecule is linked to both N atoms of a bathophenanthroline mol­ecule through a bifurcated O—H...(N,N) hydrogen bond.
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