Crystal structure and Hirshfeld surface analysis of (<i>E</i>)-<i>N</i>′-benzylidene-4-chlorobenzenesulfonohydrazide and of its (<i>E</i>)-4-chloro-<i>N</i>′-(<i>ortho</i>- and <i>para</i>-methylbenzylidene)benzenesulfonohydrazide derivatives
Acta crystallographica. Section E, Crystallographic communications