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(E)-6-Meth-oxy-9-methyl-1,2,3,4-tetra-hydro-9H-carbazol-4-one oxime.

ABSTRACT: The title compound, C(14)H(16)N(2)O(2), is dimerized by inversion-related inter-molecular O-H?O and O-H?N hydrogen bonding. There is also an intra-molecular C-H?N bond, resulting in a six-membered ring.

SUBMITTER: Sheng W

PROVIDER: S-EPMC2961900 | biostudies-other | 2008

REPOSITORIES: biostudies-other

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(E)-6-Meth-oxy-9-methyl-1,2,3,4-tetra-hydro-9H-carbazol-4-one oxime.

Sheng Wei W Zhang Qi-Hong QH Qiu Zhui-Bai ZB

Acta crystallographica. Section E, Structure reports online 20080705 Pt 8

The title compound, C(14)H(16)N(2)O(2), is dimerized by inversion-related inter-molecular O-H⋯O and O-H⋯N hydrogen bonding. There is also an intra-molecular C-H⋯N bond, resulting in a six-membered ring. ...[more]

PMID: 21203137

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6-Meth-oxy-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

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Crystal structure of (E)-2-[(2-bromopyridin-3-yl)methyl-idene]-6-meth-oxy-3,4-di-hydro-naphthalen-1(2H)-one and 3-[(E)-(6-meth-oxy-1-oxo-1,2,3,4-tetra-hydro-naphthalen-2-ylidene)meth-yl]pyridin-2(1H)-one.

Project description:The title compounds C17H14BrNO2, (I), and C17H15NO3, (II), were obtained from the reaction of 6-meth-oxy-3,4-di-hydro-2H-naphthalen-1-one and 2-bromo-nicotinaldehyde in ethanol. Compound (I) was the expected product and compound (II) was the oxidation product from air exposure. In the crystal structure of compound (I), there are no short contacts or hydrogen bonds. The structure does display π-π inter-actions between adjacent benzene rings and adjacent pyridyl rings. Compound (II) contains two independent mol-ecules, A and B, in the asymmetric unit; both are non-planar, the dihedral angles between the meth-oxy-benzene and 1H-pyridin-2-one mean planes being 35.07 (9)° in A and 35.28 (9)°in B. In each mol-ecule, the 1H-pyridin-2-one unit participates in inter-molecular N-H⋯O hydrogen bonding to another mol-ecule of the same type (A to A or B to B). The structure also displays π-π inter-actions between the pyridyl and the benzene rings of non-equivalent mol-ecules (viz., A to B and B to A).

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