N-BENZYL-3-BENZYLIDENEISOINDOLIN-1-ONE

The title compound, C22H17NO, is formed by the palladium-catalyzed rea ction between N-benzyl-o-iodobenzamide and phenylacetylene. The molecu les contain three planar parts, namely the isoindolinone moiety (A) an d the phenyl rings of the benzyl and benzylidene groups (B and C, resp ectively), and display the Z configuration. Rings B and C are inclined by 14.9(1)degrees through the endocyclic atoms, are inclined by 14.9( 1)degrees with respect to each other. The dihedral angles A/B and A/C are 98.23(4) and 111.08(3)degrees, respectively. Interatomic distances and angles are within expected ranges. Weak C-H ... O hydrogen bonds between the phenyl C atoms and the O atom of the isoindolinone group a re indicated by the contacts C18-H18 ... O(-x+1, -y, -z+1) 3.432(2) an d C19-H19 ... O(x-1, y, z) 3.642 (2) Angstrom.