Research Article: Ethyl 1-(2,4-dichloro­benz­yl)-4-oxo-7-trifluoro­meth­yl-1,4-dihydro­quinoline-3-carboxyl­ate

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Hoong-Kun Fun, Chin Wei Ooi, B. Garudachari, Arun M. Isloor, Gurumurthy Hegde.


In the title compound, C20H14Cl2F3NO3, the trifluromethyl group is disordered over two sets of sites in a 0.784 (10):0.216 (10) ratio. The quinoline ring system is essentially planar with a maximum deviation of 0.058 (2) Å for the N atom and forms dihedral angles of 89.23 (11) and 8.13 (17)°, respectively with the mean planes of the benzene ring and the carboxyl­ate group. In the crystal, pairs of weak C—H⋯O and C—H⋯F hydrogen bonds link mol­ecules into centrosymmetric dimers. The crystal structure is further stabilized by weak π–π [centroid–centroid distance = 3.624 (2) Å] inter­actions.

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For background to the properties and uses of quinoline derivatives, see: Kaur et al. (2010 ▶); Eswaran et al. (2010 ▶); Chou et al. (2010 ▶); Chen et al. (2004 ▶); Shingalapur et al. (2009 ▶). For a related structure, see: Fun et al. (2011 ▶). For standard bond-length data, see: Allen et al. (1987 ▶).