3-(Diphenylamino)isobenzofuran-1(3H)-one

Abstract

In the title isobenzofuranone derivative, C20H 15NO2, the planar fused-ring system (r.m.s. deviation for the 10 fitted atoms = 0.031Å) forms dihedral angles of 63.58(6) and 63.17(8)° with the N-bound phenyl rings; the dihedral angle between the planes of these phenyl rings is 85.92(7)°. In the crystal, molecules are linked by weak C-H..O interactions, involving both O atoms, forming helical supramolecular chains along [001].