The current research includes the synthesis and crystallographic characterization of 2-phenylaminotetrahydro-1,3-thiazepine hydrochloride (HPAT) 2-phenyliminohexa- hydro-1,3-thiazepine (PIT) compounds. 2-Phenylaminotetrahydro-1,3-thiazepine hydro-chloride was synthesized by cyclization 1-(4-hydroxybutyl)-3-phenylthiourea in an acidic condition. second compound, 2-phenyliminohexahydro-1,3-thiaze...