Table 10: Summary of mass spectroscopic data of the 1-(3, 4-dichlorophenyl)-4-(2-aryl-1-diazenyl)-piperazine series (15).

Series # X Formula Calc. Mass (amu) Found Mass (amu)
15a p-CN C17H15N5C12 359.0704 359.0700
15b p-COCH3 C18H18N4OC12 376.0857 376.0846
15c p-Br C16H15N4C12Br 411.9857 411.9848
15d p-OCH3 C17H18N4OC12 364.0857 364.0821
15e p-NO2 C16H15N5O2C12 379.0602 379.0613
15f p-CH3 C17H18N4C12 348.0908 348.0917
15g 3-py C15H15N5C12 335.0704 335.0700
15h m-CF3 C17H15N4F3C12 402.0626 402.0611