Crystal and molecular structure of 15-bromolongibornane-8,9-dione

Abstract

The crystal and molecular structure of the title compound (1) has been determined by the heavy-atom method from 1038 observed three-dimensional photographic data. Crystals are orthorhombic, with a=20.07 ± 0.02, b=10.05 ± 0.02, c=7.31 ± 0.01 Å, space group P2₁2₁2₁, with Z=4. The structure was refined by block diagonal leastsquares to R 0.099. The conformation of the norbornane moiety is discussed. The seven-membered ring portion of the molecule adopts an approximate chair conformation. The packing of the molecules in the crystal is mainly a consequence of van der Waals interactions.