title: 2,2,2-Trifluoro-1-[3-(2,2,2-trifluoro-acet-yl)azulen-1-yl]ethanone.
abstract: There are two mol-ecules in the asymmetric unit of the title compound, C(14)H(6)F(6)O(2), in which the azulene systems possess an almost planar geometry with maximum deviations of 0.0438 (15) and 0.0396 (14) Å. Besides intra- and inter-molecular C-H⋯O and C-H⋯F inter-actions, the structure displays three F⋯F contacts [2.793 (2), 2.8820 (17) and 2.9181 (16) Å]. Furthermore, a characteristic azulene π-stacking is observed with an alternating sequence of electron-rich five-membered rings and electron-deficient seven-membered rings [centroid-centroid distances = 3.5413 (12), 3.6847 (12), 3.5790 (12) and 3.7718 (12) Å].
authors.affiliation: Institut für Organische Chemie, TU Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Förster
authors.forename: Frank
authors.initials: F
authors.lastname: Eissmann
authors.forename: Wilhelm
authors.initials: W
authors.lastname: Seichter
authors.forename: Edwin
authors.initials: E
authors.lastname: Weber