Received 2 December 2011
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia,bDepartment of Studies in Chemistry, Mangalore University, Mangalagangotri 574 199, India, and cDepartment of Chemistry, P. A. College of Engineering, Nadupadavu, Mangalore 574 153, India
Correspondence e-mail: firstname.lastname@example.org
In the title compound, C21H16F2O2, the central benzene ring is inclined at dihedral angles of 30.91 (8) and 46.88 (7)° to the two terminal fluoro-substituted rings. The dihedral angle between the two terminal fluoro-subsituted rings is 68.34 (8)°. An intramolecular C-HO hydrogen bond generates an S(6) ring motif. The crystal structure is stabilized by weak C-H interactions.
For a related structure and background to terphenyls, see: Fun, Chia et al. (2011); Samshuddin et al. (2011). For chalcone derivatives of the title compound, see: Fun, Hemamalini et al. (2011); Betz et al. (2011a,b). For the synthetic procedure, see: Kotnis (1990). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RZ2681 ).
HKF and MH thank the Malaysian Government and Universiti Sains Malaysia for the Research University grant No. 1001/PFIZIK/811160. MH also thanks Universiti Sains Malaysia for a post-doctoral research fellowship. BN thanks the UGC for financial assistance through the SAP and BSR one-time grant for the purchase of chemicals. SS thanks Mangalore University for research facilities.
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