Crystal structures of threeN-(arylsulfonyl)-4-fluorobenzamides

Abstract

The crystal structures of three N-(aryl­sulfon­yl)-4-fluoro­benzamides, namely 4-fluoro-N-(2-methyl­phenyl­sulfon­yl)­benzamide, (I), N-(2-chloro­phenyl­sulfon­yl)-4-fluoro­benzamide, (II), and N-(4-chloro­phenyl­sulfon­yl)-4-fluoro­benzamide monohydrate, (III), are described and compared with related structures. The conformation of the three mol­ecules is very similar with the aromatic rings being inclined to one another by 82.83 (11) and 85.01 (10)° in the two independent mol­ecules of (I), 89.91 (10)° in (II) and 81.82 (11)° in (III).