Materials Data on TmBr2 by Materials Project
TmBr2 is Baddeleyite-like structured and crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. Tm is bonded in a 7-coordinate geometry to seven Br atoms. There are a spread of Tm–Br bond distances ranging from 2.89–3.11 Å. There are two inequivalent Br sites. In the first Br site, Br is bonded in a trigonal planar geometry to three equivalent Tm atoms. In the second Br site, Br is bonded to four equivalent Tm atoms to form a mixture of distorted edge and corner-sharing BrTm4 tetrahedra.
36 MATERIALS SCIENCE↗