Article

[2,7-Dimethoxy-8-(4-methylbenzoyl)1-naphthyl](4-methylphenyl)methanone

Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology, 2-24-16 Naka-machi, Koganei, Tokyo 184-8588, Japan.
Acta Crystallographica Section E Structure Reports Online (Impact Factor: 0.35). 11/2010; 66(Pt 11):o2752. DOI: 10.1107/S1600536810039620
Source: PubMed

ABSTRACT

In the title compound, C(28)H(24)O(4), the two 4-methyl-benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel, the dihedral angle between the two phenyl rings being 9.64 (7)°. The dihedral angles between the two phenyl rings and the naphthalene ring system are 71.82 (6) and 71.58 (6)°. In the crystal, inter-molecular C-H⋯O inter-actions between the carbonyl oxygen and aromatic hydrogen are observed.

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The title compound {systematic name: [8-(4-aminobenzoyl)-2,7-dimethoxynaphthalen-1-yl](4-aminophenyl)methanone}, C(26)H(22)O(4)N(2), possesses crystallographically imposed twofold symmetry, with two C atoms lying on the rotation axis. In the crystal, the mol-ecules inter-act through inter-molecular N-H⋯O hydrogen bonds between the amino and meth-oxy groups on the naphthalene ring systems and N-H⋯π inter-actions between the amino groups and the naphthalene rings. Furthermore, weak C-H⋯O hydrogen bonds and π-π stacking inter-actions between the benzene rings are observed. The centroid-centroid and inter-planar distances between the benzene rings of the aroyl group and the naphthalene ring systems of adjacent mol-ecules are 3.6954 (8) and 3.2375 (5) Å, respectively. The dihedral angle between the mean planes of the benzene ring and the naphthalene ring system is 83.59 (5)°. The benzene ring and the carbonyl group in the benzoyl unit are almost coplanar [C-C-C-O torsion angle = 175.91 (10)°].
    Preview · Article · Jan 2010 · Acta Crystallographica Section E Structure Reports Online
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In the title compound, C(19)H(15)BrO(3), the dihedral angle between the naphthalene ring system and the benzene ring is 72.02 (9)°. The bridging carbonyl C-C(=O)-C plane makes dihedral angles of 70.88 (10) and 1.87 (12)°, respectively, with the naphthalene ring system and the benzene ring. In the crystal, two types of weak inter-molecular C-H⋯O inter-actions and a short Br⋯C contact [3.345 (2) Å] are observed.
    Preview · Article · Jan 2010 · Acta Crystallographica Section E Structure Reports Online
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In the title compound, C19H15BrO3, the dihedral angle between the naphthalene ring system and the benzene ring is 62.51 (8)°. The bridging carbonyl C—C(=O)—C plane makes dihedral angles of 47.07 (6)° with the naphthalene ring system and 24.20 (10)° with the benzene ring. A weak inter­molecular C—H⋯O hydrogen bond exists between the H atom of one meth­oxy group and the O atom of the other meth­oxy group in an adjacent mol­ecule. The crystal packing is additionally stabilized by two types of weak inter­molecular inter­actions involving the Br atom, C—H⋯Br and Br⋯O [3.2802 (14) Å].
    Full-text · Article · Oct 2010 · Acta Crystallographica Section E Structure Reports Online
Show more