STRUCTURE OF LITHIUM PERBROMATE TRIHYDRATE

The structure of LiBrO4.3H2O consists of stacks, along z, of somewhat distorted face-sharing octahedra of water O atoms coordinating Li ions . with each stack surrounded by six stacks of virtually regular tetrah edral perbromate ions. This structure and that of LiClO4.3H2O are isom orphic. As in the perchlorate, the Br-O(1) (axial) bonds are oriented in the positive z direction. Location and isotropic refinement of the single type of H atom permitted detailed analysis of the hydrogen bond ing, which occurs principally with perbromate O atoms and is best desc ribed as two-center bifurcated.