title: 1,8-Bis(4-amino-benzo-yl)-2,7-dimeth-oxy-naphthalene.
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)°].
authors: Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology, 2-24-16 Naka-machi, Koganei, Tokyo 184-8588, Japan.
authors: Takahiro
authors: T
authors: Nishijima
authors: Kotaro
authors: K
authors: Kataoka
authors: Atsushi
authors: A
authors: Nagasawa
authors: Akiko
authors: A
authors: Okamoto
authors: Noriyuki
authors: N
authors: Yonezawa
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