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(8-Bromo-2-hydroxy-7-methoxy-1-naphthyl)(4-chlorobenzoyl)methanone

Acta Crystallographica Section E Structure Reports Online (Impact Factor: 0.35). 03/2010; 66(Pt 3):o676. DOI: 10.1107/S1600536810006185
Source: PubMed

ABSTRACT In the title compound, C(18)H(12)BrClO(3), the naphthalene ring system and the benzene ring make a dihedral angle of 82.18 (9)°. The conformation around the central C=O group is such that the C=O bond vector forms a larger angle to the plane of the naphthalene ring system than to the plane of the benzene ring, viz. 60.91 (16)° versus 13.94 (16)°. In the crystal structure, two π-π inter-actions formed between the naphthalene ring systems [centroid-centroid distances of 3.8014 (13) and 3.9823 (13) Å] and inter-molecular O-H⋯O and C-H⋯O hydrogen bonds are present.

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    ABSTRACT: The asymmetric unit of the title compound, C(18)H(11)Br(2)ClO(3), contains two crystallographically independent molecules in which the dihedral angles between the naphthalene ring systems and the benzene rings are 55.64 (11) and 60.50 (11)degrees. In each molecule, an intramolecular O-H center dot center dot center dot O=C hydrogen bond generates a six-membered ring. In the crystal structure, intermolecular C-H center dot center dot center dot O and C-H center dot center dot center dot Cl hydrogen bonds and two different Br center dot center dot center dot O halogen bonds [2.9850 (19) and 3.2169 (19) angstrom] are observed.
    Acta Crystallographica Section E Structure Reports Online 07/2010; 66(Pt 7):o1761. DOI:10.1107/S1600536810023299 · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(18)H(11)Br(2)ClO(3), an intramolecular O-H center dot center dot center dot O-C hydrogen bond occurs, forming a six-membered ring. The naphthalene ring system and the benzene ring make a dihedral angle of 57.36 (9)degrees. The central carbonyl C-(C=O)-C group is twisted away from the naphthalene ring system and the benzene ring by 18.61 (15) and 26.25 (16)degrees, respectively. In the crystal structure, two intermolecular Br center dot center dot center dot Cl close contacts [3.4927 (7) and 3.4325 (7)angstrom] are observed.
    Acta Crystallographica Section E Structure Reports Online 06/2010; 66(Pt 6):o1304. DOI:10.1107/S1600536810015527 · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C(19)H(14)BrClO(3), the naphthalene ring system and the benzene ring make a dihedral angle of 77.36 (10)°. The conformation around the central C=O group is such that the C=O bond vector forms a larger angle to the plane of the naphthalene ring system than to the plane of the benzene ring, viz. 75.73 (15)° versus 2.33 (17)°. In the crystal structure, a π-π inter-action is formed between naphthalene ring systems, with a centroid-centroid distance of 3.8363 (14) Å and a lateral offset of 1.606 Å. Inter-molecular C-H⋯Br and C-H⋯O hydrogen bonds and a C-H⋯π contact are present in the crystal structure.
    Acta Crystallographica Section E Structure Reports Online 04/2010; 66(Pt 4):o873. DOI:10.1107/S1600536810009463 · 0.35 Impact Factor

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