organic compounds
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In the title molecule, C10H12O3, all non-H atoms lie in a common plane (r.m.s deviation = 0.010 Å). The molecular conformation is stabilized by an intramolecular O—HO hydrogen bond.
metal-organic compounds
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In the title binuclear copper(II) complex, [Cu2(ClO4)2(OH)2(C10H8N2)2], the CuII ion is coordinated in the form of a Jahn–Teller distorted octahedron by two bipyridine N atoms, two perchlorate O atoms and two hydroxide O atoms, and displays a distorted octahedral geometry. The molecule belongs to the symmetry point group C2h. The CuII ion is located on a twofold rotation axis and the hydroxide and perchlorate ligands are located on a mirror plane. Within the dinuclear molecule, the CuCu separation is 2.8614 (7) Å. The crystal structure exhibits O—HO, C—HO and π–π [centroid–centroid distance = 3.5374 (13) Å] interactions.
organic compounds
Open access
The molecular structure of the title compound, C16H16N2O2, is stabilized by intramolecular O—HN hydrogen bonds with S(6) graph-set motifs, so that the molecule is almost planar, with a C=N—N=C torsion angle of −179.7 (2)° and a dihedral angle of 1.82 (12)° between the aromatic rings. In the crystal, weak C—Hπ interactions lead to the formation of a three-dimensional network.