title: 1,8-Bis(4-chloro-benzo-yl)-7-meth-oxy-naphthalen-2-ol ethanol monosolvate.
abstract: In the title compound, C(25)H(16)Cl(2)O(4)·C(2)H(6)O, the two 4-chloro-benzoyl groups are in syn orientations with respect to the naphthalene ring system and are approximately parallel to each other: the dihedral angle between the benzene rings is 11.43 (16)°. The conformation around each of the carbonyl C-(C=O)-C groups forms a larger angle to the plane of the naphthalene ring system than that to the benzene ring; the angles of the C=O bond vector with the naphthalene ring system and the benzene ring are 55.4 (3) versus 13.5 (3)° and 52.2 (3) versus 17.9 (3)°. An intra-molecular O-H⋯O=C hydrogen bond generates a six-membered ring. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds including the ethanol solvent mol-ecule are observed. A C-H⋯O inter-action also occurs. The ethyl group of the ethanol mol-ecule is disordered over two positions with site occupancies of 0.63 and 0.37. The crystal studied was an inversion twin.
authors: Ryosuke
authors: R
authors: Mitsui
authors: Atsushi
authors: A
authors: Nagasawa
authors: Keiichi
authors: K
authors: Noguchi
authors: Akiko
authors: A
authors: Okamoto
authors: Noriyuki
authors: N
authors: Yonezawa
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: Acta Crystallogr Sect E Struct Rep Online. 2008 Jun 19;64(Pt 7):o1278
references: 21202910