The crystal structures of two hydrogen-bonded adducts containing omicron-bromoterephthalate have been determined and shown to be virtually identical to those of their terephthalate analogues. Consequently, the strategy of manipulating the relative orientation of the carboxylate groups by adding a bromine atom to terephthalate, which has previously been used to give metal-organic frameworks with predictable structure, can be frustrated with the observation of disorder in the bromine position.
Burke, N. J., Burrows, A. D., Mahon, M. F., & Pritchard, L. S. (2003). Disorder within dicarboxylates and supramolecular structural control in hydrogen-bonded networks. CrystEngComm, 5, 355-357. https://doi.org/10.1039/b309884b