RbAlBr4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one Br(1), one Br(2), and six equivalent Br(3) atoms. Al(1) is bonded in a tetrahedral geometry to one Br(1), one Br(2), and two equivalent Br(3) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and one Al(1) atom. In the second Br site, Br(2) is bonded in a distorted single-bond geometry to one Rb(1) and one Al(1) atom. In the third Br site, Br(3) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one Al(1) atom.
RbAlBr4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one Br(1), one Br(2), and six equivalent Br(3) atoms. The Rb(1)-Br(1) bond length is 3.52 Å. The Rb(1)-Br(2) bond length is 3.66 Å. There are a spread of Rb(1)-Br(3) bond distances ranging from 3.63-4.01 Å. Al(1) is bonded in a tetrahedral geometry to one Br(1), one Br(2), and two equivalent Br(3) atoms. The Al(1)-Br(1) bond length is 2.29 Å. The Al(1)-Br(2) bond length is 2.30 Å. Both Al(1)-Br(3) bond lengths are 2.32 Å. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and one Al(1) atom. In the second Br site, Br(2) is bonded in a distorted single-bond geometry to one Rb(1) and one Al(1) atom. In the third Br site, Br(3) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one Al(1) atom.