A new refinement of the orthorhombic polymorph of acetamide

Crystals of orthorhombic acetamide, C2H5NO, were from a mixture of ethyl acetate and dilute ammonia. previously reported structure [Hamilton (1965). Acta 18, 866-870] was confirmed, with two molecules in asymmetric unit. The molecules are hydrogen bonded to columns. Neighboring columns are connected by intermolecular C-H...O interactions..