%0 Journal Article %T 4-Chloro-2′,4′,6′-triethylbenzophenone: a redetermination %A Hiroki Takahashi %J Acta Crystallographica Section E %D 2011 %I International Union of Crystallography %R 10.1107/s1600536811009639 %X The structure of the title compound [systematic name: (4-chlorophenyl)(2,4,6-trimethylphenyl)methanone], C19H21ClO, has been redetermined at 100 K. The redetermination is of significantly higher precision than the previous structure determination at 133 K and reveals disorder of the one of the o-ethyl groups [occupancy factors = 0.77 (1) and 0.23 (1)] that was not identified in the previous report [Takahashi & Ito (2010). CrystEngComm, 12, 1628¨C1634]. The C¡ªC¡ªC¡ªC torsion angles of the major and minor disorder components of the ethyl group with respect to the attached benzene ring are 103.7 (2) and 172.0 (6)¡ã, respectively. It is of interest that the title compound does not display a single-crystal-to-single-crystal polymorphic phase transition on cooling, as was observed for a closely related compound, a fact that can be attributed to the disorder in the ethyl group. %U http://scripts.iucr.org/cgi-bin/paper?S1600536811009639