Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 7 (July 2012)


organic compounds



bt5954 scheme

Acta Cryst. (2012). E68, o2289-o2290    [ doi:10.1107/S1600536812028875 ]

(3Z)-1,1,1-Trifluoro-4-phenyl-4-[(2-{[(1Z)-4,4,4-trifluoro-3-oxo-1-phenylbut-1-en-1-yl]amino}ethyl)amino]but-3-en-2-one

A. M. Asiri, H. M. Faidallah, K. A. Alamry, S. W. Ng and E. R. T. Tiekink

Abstract: In the title compound, C22H18F6N2O2, the five atoms comprising each O=C-C=C-N fragment are almost coplanar (the r.m.s. deviation for the fitted atoms being 0.008 and 0.002 Å) and form a dihedral angle of 47.70 (12)°. The phenyl ring attached to each of the O=C-C=C-N fragments is twisted out of the respective plane with dihedral angles of 64.46 (11) and 61.82 (10)°, respectively. An almost orthogonal relationship for the phenyl rings is indicated by the dihedral angle between them of 78.19 (14)°. The conformation about each ethylene bond is Z, which allows for the formation of intramolecular N-H...O hydrogen bonds which close S(6) loops. The most prominent feature of the crystal packing are N-H...O hydrogen bonds that result in supramolecular chains along the a axis. The F atoms of one -CF3 groups are disordered over three sets of sites with site-occupation factors of 0.318 (4), 0.360 (10) and 0.322 (9).


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