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

Table 9: Summary of mass spectroscopic data of the 1-(4-chlorophenyl)-4-(2-aryl-1-diazenyl)-piperazin series (14).

Series #	X	Formula	Calc. Mass (amu)	Found Mass (amu)
14a	p-CO₂CH₃	C₁₈H₁₉N₄O₂Cl	358.1196	358.1195
14b	p-CN	C₁₇H₁₆N₅Cl	325.1094	325.1101
14c	p-Br	C₁₆H₁₆N₄ClBr	378.0247	378.0248
14d	p-CH₃	C₁₇H₁₉N₄Cl	314.1298	314.1295
14e	p-OCH₃	C₁₇H₁₉N₄OCl	330.1247	330.1239
14f	p-NO₂	C₁₆H₁₆N₅O₂Cl	345.0992	345.1000