(3,6-Dimethoxynaphthalen-2-yl)(phenyl)methanone

Abstract

In the title compound, C19H16O3, the dihedral angle between the naphthalene ring system and the phenyl ring is 68.32 (5)°. The bridging carbonyl C—C(=O)—C plane makes a dihedral angle of 54.32 (5)° with the naphthalene ring system and 21.45 (6)° with the phenyl ring. An inter­molecular C—H⋯O hydrogen bond exists between the H atom of one meth­oxy group and the O atom of the second meth­oxy group in an adjacent mol­ecule. The crystal packing is additionally stabilized by a weak C—H⋯O inter­molecular inter­action between an H atom of the naphthalene ring and the O atom of the carbonyl group.

Poly(arylene ether ketone)s composed of a 1,8-diaroylenenaphthalene moiety: a non-coplanarly accumulated aromatic-ring repeating unit

“…9,10 These non-coplanar accumulation features are distinct from those of the corresponding b-isomers. 11 The characteristic congested shapes of these molecules prompted us to trigger the incorporation of the 1,8-diaroyl-2,7-dimethoxynaphthalene moiety into the poly(arylene ether ketone) backbone. When the 1,8-diaroyl-2,7-dimethoxynaphthalene unit is incorporated into the polymer molecule, it is expected to have essentially the same topology of non-coplanar accumulated aromatic-rings spatial organization to that of the crystal of the relating diaroylnaphthalene molecule.…”