%0 Journal Article %T N′-[(1E)-1-(4-Chlorophenyl)ethylidene]formohydrazide %A Zahid Shafiq %A Muhammad Yaqub %A M. Nawaz Tahir %A Mian Hasnain Nawaz %J Acta Crystallographica Section E %D 2009 %I International Union of Crystallography %R 10.1107/s1600536809037143 %X The structure of the title compound, C9H9ClN2O, consists of centrosymmetric dimers due to intermolecular N¡ªH...O hydrogen bonding, forming R22(8) ring motifs. The dihedral angle between the p-chlorophenyl unit and the remaining heavy-atom group is 6.77 (17)¡ã. %U http://scripts.iucr.org/cgi-bin/paper?S1600536809037143