Research Article: (E)-2-[4-(Trifluoro­meth­yl)benzyl­idene]-2,3-dihydro-1H-inden-1-one

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Ang Chee Wei, Mohamed Ashraf Ali, Tan Soo Choon, Ibrahim Abdul Razak, Suhana Arshad.


In the title mol­ecule, C17H11F3O, the indan ring system and the trifluoro­methyl-substituted benzene ring are approximately individually planar and form a dihedral angle of 1.81 (5)° with each other. In the crystal, mol­ecules are linked by pairs of weak bifurcated (C—H)2⋯O hydrogen bonds to form centrosymmetric dimers, generating R21(6) and R22(10) ring motifs. These dimers are connected by further weak C—H⋯O hydrogen bonds into one-dimensional chains along the b axis. Weak C—H⋯π inter­actions are also present.

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For the biological activity of chalcone compounds, see: Gurubasavaraja Swamy & Agasimundin (2008 ▶); Shibata (1994 ▶); Charris et al. (2007 ▶); Sharma et al. (2009 ▶). For related structures, see: Ali et al. (2011a ▶,b ▶,c ▶). For hydrogen-bond motifs, see: Bernstein et al. (1995 ▶). For the stability of the temperature controller used for data collection, see: Cosier & Glazer (1986 ▶).