The crystallographic structure of 4-hydroxy-3-methylene-4-(p-nitrophenyl)bu
tan-2-one 1 is disclosed by x-ray analysis. It crystallized in the space gr
oup C2/c (#15) with a = 19.958(4), b = 10.486(3), c = 15.009(3) Angstrom, b
eta = 137.553(6)degrees, V = 2120.0(9) Angstrom,(3) Dcalc = 1.386 g/cm(3),
and Z = 8.