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

The asymmetric unit of the diamine compound, C(18)H(14)F(3)N(2)O(2)S(2), consists of two mol-ecules; the C=C double bond has a Z configuration in the C(4)H(3)S-C=C-C(=O)-C segment. The -NH-CH(2)-CH(2)-NH chain adopts a twisted U-shape. The amino group is an intra-molecular hydrogen-bond donor to the carbonyl group; the intra-molecular hydrogen bond generates a six-membered ring. In both mol-ecules, the thienyl rings are disordered over two positions; the occupancies of the major components are 0.817 (4) and 0.778 (4) in one mol-ecule and 0.960 (4) and 0.665 (4) in the other. One of the trifluoro-methyl groups is disordered over two positions with the major component having 0.637 (8) occupancy.