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The title compound, C15H14ClNO, displays a trans configuration with respect to the C=N double bond [C—C=N—C = 175.3 (2)°], with a twist by 58.67 (8)° of the two benzene rings about the cental C=N bond. The crystal structure is stabilized by intramolecular O—H...N and intermolecular C—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title compound, C16H14Cl2N2O2, was synthesized by the reaction of 1-(5-chloro-2-hydroxyphenyl)ethanone with hydrazine hydrate. The molecule sits on a crystallographic center of symmetry at the mid-point of the central N—N bond and both N atoms are acceptors in an intramolecular hydrogen bond. In the crystal structure, the planar molecules are arranged in a sheet-like motif with one C—H...O bond linking molecules within the sheets and a second C—H...O interaction between neighboring sheets. There is also a close Cl...Cl intermolecular approach of 3.54 (1) Å within the sheets. [ABSTRACT FROM AUTHOR]

The structure of the title molecule, C15H13N3O4, is stabilized by intermolecular N—H...O hydrogen bonds. There are two crystallographically independent molecules in the asymmetric unit. The dihedral angles between the benzene rings in the two molecules are 86.75 (9) and 8.3 (2)°. [ABSTRACT FROM AUTHOR]

The title molecule, C30H28N2O2, (I), resides on a crystallographic inversion centre located at the midpoint of the N—N bond. It contains an intramolecular O—H...N interaction [O...N = 2.572 (2) Å] and a weak C—H...N contact [C...N = 2.752 (2) Å]. There are no intermolecular interactions of note in the crystal structure. [ABSTRACT FROM AUTHOR]

The title compound, C21H17ClN2O3, displays a trans configuration with respect to the C=N double bond. The crystal structure is stabilized by intramolecular O—H...N and intermolecular C—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, C14H12O2, the dihedral angle between the two aromatic rings is 60.02 (4)°. The crystal structure is stabilized by intramolecular O—H...O and intermolecular C—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title compound, C18H16Cl4N2O2, was synthesized by the reaction of 1-(3,5-dichloro-2-hydroxyphenyl)propan-1-one with hydrazine hydrate. The molecule has a centre of symmetry at the mid-point of the N—N bond. The crystal structure is stabilized by intramolecular O—H...N and intermolecular C—H...Cl hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title compound, C22H20N2O3, displays a trans configuration with respect to the C=N double bond. The crystal structure is stabilized by intra­molecular O—H⋯N and N—H⋯O and inter­molecular O—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title compound, C23H21Cl2NO, was prepared by condensation of 1,2,3,4-tetra­hydro­naphthalen-1-amine with (3,5-dichloro-2-hydroxy­phen­yl)(phen­yl)methanone. There is an intra­molecular O—H⋯N hydrogen bond and mol­ecules are linked via N—H⋯Cl hydrogen bonds, forming centrosymmetric dimers in the crystal structure. [ABSTRACT FROM AUTHOR]

The asymmetric unit contains two independent molecules of the title compound, C23H20ClNO2, with the same absolute configuration. Intramolecular O—H…N hydrogen bonding is observed in both independent molecules. [ABSTRACT FROM AUTHOR]

In the title compound, C15H14O2, the dihedral angle between the two aromatic rings is 87.98 (13)°. The primary interaction is an intramolecular O—H...O=C interaction [O...O = 2.559 (3) Å]. Intermolecular interactions/contacts are weak and are of the O—H...C, C—H...π(arene) and π–π(arene) types [ Cg... Cg( ) = 3.927 (1) Å; Cg is the centroid of the phenyl ring]. [ABSTRACT FROM AUTHOR]