organic compounds
The title compound, C16H15BrO, contains two non-planar six-membered rings constituting a bicyclic system. One of these rings shares two C atoms with an ethanoanthracene moiety, while the second ring has bromo and hydroxy substituents. The bicyclic system has approximate D3 symmetry. There are two molecules in the asymmetric unit. Two strong hydrogen bonds, with DA distances of 2.765 (2) and 2.818 (2) Å, are observed between O atoms.
organic compounds
In the title compound, C23H21ClO4, the bicyclic system has approximate D3 symmetry and the four non-planar six-membered rings adopt boat conformations. Intra- and intermolecular hydrogen bonds are effective in stabilizing the crystal structure.