“…It is also used in the synthesis of dyes, agrochemicals and other pharmaceutical compounds. The crystal structures of compounds derived from 1-ethylpiperazine, viz., chlorobis- (2-chlorobenzyl)(4-ethylpiperazine-1-dithiocarbamato-2 S,S 0 )tin(IV) (Li & Li, 2007), 1-diphenylmethyl-4-ethylpiperazine-1,4-diium dichloride (Qiao et al, 2010), (S)-3chloro-4-(4-ethylpiperazin-1-yl)-5-[(1R,2S,5R)-2-isopropyl-5methylcyclohexyloxy]furan-2(5H)-one (Fu et al, 2010), 4-{[5-(4-chlorophenyl)-1-(4-fluorophenyl)-1H-pyrazol-3-yl]carbon-yl}-N-ethylpiperazine-1-carboxamide (Shahani et al, 2011), 2-[4-(2-methoxyphenyl)piperazin-1-yl]-N-(pyridin-2-yl)acetamide (Lu & Jiang, 2011), N-(4-chlorophenyl)-4-ethylpiperazine-1-carboxamide (Li, 2011) and trichlorido(1ethylpiperazin-1-ium)cobalt(II) (Dhieb et al, 2014) have been reported.…”