Abstract N-(Acetylamino) phthalimide [monoclinic, a= 7.0228 (15), b= 4.7285 (8), c= 28.882 (6) Å, β= 90.131 (7)°, space group P 2 1/c] shows an unusual crystal structure with marked pyramidalization at the phthalimide N and strong intermolecular NH to CO hydrogen bonding leading to the groups at the two ends of the hydrazine adopting an almost perpendicular arrangement. A survey of previous triacyl and tetraacyl hydrazine structures ...
