N,N′-Bis(2-phenylethyl)naphthalene-1,8:4,5-bis(dicarboximide)

Abstract

The title compound, C30H22N2O4, is a derivative of the naphthalene–imide pigments that are characterized by significant overlap of the stacked molecules. The molecule has a centre of symmetry. Accordingly, the phenylethyl groups are arranged in a trans fashion across the skeleton. The phenyl rings are not parallel to the naphthaleneimide skeleton and are twisted in the same direction by 9.27 (7)°. The molecules are, however, stacked with insignificant overlap along the stacking axis, as characterized by appreciable slide in the direction of either the short or the long molecular axis, in marked contrast to the ordinary naphthalene–imide pigments.