Research Article: (2E)-1-(2,6-Dichloro-3-fluoro­phen­yl)-3-(4-fluoro­phen­yl)prop-2-en-1-one

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Richard Betz, Thomas Gerber, Eric Hosten, Aletti S. Praveen, Hemmige S. Yathirajan, Badiadka Narayana.


In the title compound, C15H8Cl2F2O, the C=C double bond is in the E configuration. In the cyrstal, C—H⋯O hydrogen bonds connect the mol­ecules into chains along the c axis. A π–π inter­action of 3.628 (1) Å is also observed between two polyhalogenated benzene rings. The dichloro­substituted ring exhibits partial disorder over two sets of sites, with site-occupancy factors of 0.573 (3) and 0.427 (3).

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For pharmaceutical background to chalcones, see: Nielsen et al. (2004 ▶); Modzelewska et al. (2006 ▶); Nowakowska (2007 ▶); Ni et al. (2004 ▶). For related structures, see: Yathirajan et al. (2006 ▶, 2007 ▶); Betz et al. (2011 ▶). For graph-set analysis of hydrogen bonds, see: Etter et al. (1990 ▶); Bernstein et al. (1995 ▶).