Synthesis and Structure Determination of 1,4-Dibenzylpiperazine-2,5-Dione
Acta Crystallographica Section E
The title compound, C18H18N2O2, crystallizes in the centrosymmetric monoclinic space group C2/c with half the molecule as the asymmetric unit (molecules are located on inversion centers). π–π interactions between the benzene rings are found, with a perpendicular distance of 3.657 (11) Å between ring centroids.
Nunez, Luis, Jesse D. Brown, Adam M. Donnelly, Christine R. Whitlock, Allison J. Amonette.
"Synthesis and Structure Determination of 1,4-Dibenzylpiperazine-2,5-Dione."
Acta Crystallographica Section E, 60 (11): 2076-2078.