7,8,9,10-Tetrachloro-10b-(2-Hydroxy-1-Phenylethyl)-3,4-Dihydro-2h-1,3-Ox Azino[2,3-A] Isoindol-6(10bh)-One

In the title compound, C19H15Cl4NO3, the isoindole unit is planar and the oxazino ring adopts a twist-boat conformation. The dihedral angle between the isoindole unit and the phenyl ring is 50.46 (13)degrees. The molecules are linked via intermolecular O-H center dot center dot center dot O hydrogen bonds and weak C-H center dot center dot center dot O and C-H center dot center dot center dot Cl interactions, forming a three-dimensional network.