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Crystal structure and Hirshfeld surface analysis of (Z)-6-[(2-hy-droxy-5-nitro-anilino)methyl-idene]-4-methyl-cyclo-hexa-2,4-dien-1-one.

ABSTRACT: The title compound, C₁₄H₁₂N₂O₄, is a Schiff base that exists in the keto-enamine tautomeric form and adopts a Z configuration. The mol-ecule is almost planar, the rings making a dihedral angle of 4.99 (7)°. The mol-ecular structure is stabilized by an intra-molecular N-H⋯O hydrogen bond forming an S(6) ring motif. In the crystal, inversion-related mol-ecules are linked by pairs of O-H⋯O hydrogen bonds, forming dimers with an R ² ₂(18) ring motif. The dimers are linked by pairs of C-H⋯O contacts with an R ² ₂(10) ring motif, forming ribbons extended along the [20] direction. Hirshfeld surface analysis, two-dimensional fingerprint plots and the mol-ecular electrostatic potential surfaces were used to analyse the inter-molecular inter-actions present in the crystal, indicating that the most important contributions for the crystal packing are from H⋯H (33.9%), O⋯H/H⋯O (29.8%) and C⋯H/H⋯C (17.3%) inter-actions.

SUBMITTER: Kansiz S

PROVIDER: S-EPMC6658968 | biostudies-literature |

REPOSITORIES: biostudies-literature

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6-[(2,4-Di-methyl-anilino)methyl-idene]-2-hy-droxy-cyclo-hexa-2,4-dienone.

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Crystal structure and Hirshfeld surface analysis of (<i>Z</i>)-6-[(2-hy-droxy-4-methyl-anilino)-methyl-idene]-4-methyl-cyclo-hexa-2,4-dien-1-one.

Project description:The title compound, C15H15NO2, is a Schiff base that exists in the keto-enamine tautomeric form and adopts a Z configuration. The mol-ecule is almost planar, with the two phenyl rings twisted relative to each other by 9.60 (18)°. There is an intra-molecular N-H⋯O hydrogen bond present forming an S(6) ring motif. In the crystal, pairs of O-H⋯O hydrogen bonds link adjacent mol-ecules into inversion dimers with an R 2 2(18) ring motif. The dimers are linked by very weak π-π inter-actions, forming layers parallel to (01). Hirshfeld surface analysis, two-dimensional fingerprint plots and the mol-ecular electrostatic potential surfaces were used to analyse the inter-molecular inter-actions, indicating that the most important contributions for the crystal packing are from H⋯H (55.2%), C⋯H/H⋯C (22.3%) and O⋯H/H⋯O (13.6%) inter-actions.

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Crystal structure and Hirshfeld surface analysis of a Schiff base: (<i>Z</i>)-6-[(5-chloro-2-meth-oxy-anilino)methyl-idene]-2-hy-droxy-cyclo-hexa-2,4-dien-1-one.

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