Received 1 May 2013
aDepartment of Physics, P.T. Lee Chengalvaraya Naicker College of Engineering and Technology, Kancheepuram 631 502, India,bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India, and cPostgraduate and Research Department of Physics, Agurchand Manmull Jain College, Chennai 600 114, India
Correspondence e-mail: firstname.lastname@example.org
The title compound, C28H24O5, consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both exhibit an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The dihedral angle between the 4-methylphenyl rings at the 1,8-positions is 76.4 (1)°. In the crystal, molecules are stacked in columns along the a axis through C-HO interactions.
For background to Diels-Alder reactions, see: Denmark & Thorarensen (1996). For related structures, see: Bailey et al. (1995); Balakrishnan et al. (2013); Takahashi et al. (2003). For puckering and asymmetry parameters, see: Cremer & Pople (1975); Nardelli (1983).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97, PLATON and publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IS5270 ).
The authors thank Dr Babu Varghese, SAIF, IIT-Madras, India, for his help with the data collection.
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