The crystal structure of [[4-(4-Morpholinyl)phenyl] methylene] propanedinitrile has been determined at room temperature from X-ray powder diffraction data using the method of simulated annealing as implemented in both of DASH and TOPAS programs. Subsequent Rietveld refinements using the data collected to 1.5 Å resolution yielded R-Bragg values of 5.6 %. It was found that the compound crystallizes in the monoclinic space group P21/n, with lattice parameters a=9.6537(34) Å, b=19.1766(11) Å, c=7.3612(15) Å and β=109.218(3)°. The molecules are packed in parallel layers running perpendicular to the c-axis with the distance between layers=4.39 Å.