rac-11-t-Butoxy-1,4-dihydro-1,4-methanoanthracene: A two-dimensional framework structure built from CH⋯O and CH⋯π hydrogen bonds

The title compound rac-11-t-butoxy-1,4-dihydro-1,4-methanoanthracene (C19H20O, Mr = 264.35) has been synthesized and characterized by FT-IR, 1H NMR, HRMS spectra and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/n, with a = 13.5240(10), b = 8.3453(6), c = 13.9604(9) Å, β = 100.0190(10)°. The structure of the title compound comprises a norbornene unit with a t-butoxy group, having a naphthalene ring fused on one side. The naphthalene is essentially planar with a maximum deviation of 0.032(2) Å for atom C(3). In the crystal, inversion-related molecules are linked by pairs of CH⋯O hydrogen bonds, forming a cyclic dimer with R22 (16) graph-set motif. The CH⋯π interactions are also observed, linking the molecules into a continuous two-dimensional framework structure.