4-Chloro-2',4',6'-triethyl-benzophenone: a redetermination.

ABSTRACT: THE STRUCTURE OF THE TITLE COMPOUND [SYSTEMATIC NAME: (4-chloro-phen-yl)(2,4,6-trimethyl-phen-yl)methanone], C(19)H(21)ClO, 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, 1628-1634]. The C-C-C-C 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)°, respectively. It is of inter-est that the title compound does not display a single-crystal-to-single-crystal polymorphic phase transition on cooling, as was observed for a

SUBMITTER: Takahashi H 

PROVIDER: S-EPMC3099762 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature