%0 Journal Article %T (2E)-1-(2-Bromophenyl)-3-(3,4,5-trimethoxyphenyl)prop-2-en-1-one %A Jerry P. Jasinski %A Ray J. Butcher %A K. Veena %A B. Narayana %J Acta Crystallographica Section E %D 2010 %I International Union of Crystallography %R 10.1107/s160053681002235x %X In the chalcone title compound, C18H17BrO4, the dihedral angle between the mean planes of the 2-bromo- and 3,4,5-trimethoxy-substituted benzene rings is 89.3 (1)¡ã. The angles between the mean plane of the prop-2-en-1-one group and the 2-bromophenyl and 3,4,5-trimethoxyphenyl ring planes are 59.7 (1) and 40.5 (8)¡ã, respectively. While no classical hydrogen bonds are present, three weak intermolecular C¡ªH...O interactions and weak C¡ªH...Br and C¡ªH...Cg ¦Ð-ring stacking interactions [C¡ªH...Cg distance = 3.377 (2) ] are observed, which contribute to the stability of crystal packing. %U http://scripts.iucr.org/cgi-bin/paper?S160053681002235X