Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)

organic compounds

Acta Cryst. (2013). E69, o951    [ doi:10.1107/S1600536813013305 ]

Dimethyl 1,8-bis­(4-methyl­phen­yl)-11-oxatri­cyclo­[,7]undeca-2,4,6,9-tetra­ene-9,10-di­carboxyl­ate

B. Balakrishnan, M. Nandakumar, P. R. Seshadri and A. K. Mohanakrishnan

Abstract: 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-H...O inter­actions.

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