Synthesis and Characterization of a Series of 1-Aryl-4-[Aryldiazenyl]-piperazines. Part II1. 1-Aryl-4-(2-Aryl-1-Diazenyl)-piperazines with Fluoro-, chloro-, Methyl-, Cyano- and Acetyl Substituents in The 1-Aryl Group

Fig. (2) Structure and substituents of the 1-(3, 4-dichlorophenyl)-4-(2-aryl-1-diazenyl)-piperazines (15).