title: (2,7-Dimethoxy-naphthalene-1,8-di-yl)bis-(4-fluoro-benzo-yl)dimethanone.
abstract: The title compound, C(26)H(18)F(2)O(4), is a naphthalene derivative in which the two aroyl groups at the 1- and 8-positions (peri positions) are anti to each other. There is an appreciable difference in the dihedral angles between the naphthalene ring system and the two benzene rings [66.88 (7)° and 88.09 (6)°]. In the crystal, weak C-H⋯O inter-actions involving one of the carbonyl groups and an aromatic C-H group ortho to the F atom seem to stabilize the packing of the mol-ecules.
authors.forename: Shoji
authors.initials: S
authors.lastname: Watanabe
authors.forename: Atsushi
authors.initials: A
authors.lastname: Nagasawa
authors.forename: Akiko
authors.initials: A
authors.lastname: Okamoto
authors.forename: Keiichi
authors.initials: K
authors.lastname: Noguchi
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Yonezawa