Materials Data on CsAlBr4 by Materials Project
CsAlBr4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.85–4.28 Å. Al3+ is bonded in a tetrahedral geometry to four Br1- atoms. There are a spread of Al–Br bond distances ranging from 2.31–2.34 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted single-bond geometry to three equivalent Cs1+ and one Al3+ atom. In the second Br1- site, Br1- is bonded in a distorted single-bond geometry to one Cs1+ and one Al3+ atom. In the third Br1- site, Br1- is bonded in a distorted single-bond geometry to three equivalent Cs1+ and one Al3+ atom.