RbBF4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 12-coordinate geometry to three equivalent F(2), three equivalent F(3), and six equivalent F(1) atoms. B(1) is bonded in a tetrahedral geometry to one F(2), one F(3), and two equivalent F(1) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to three equivalent Rb(1) and one B(1) atom. In the second F site, F(2) is bonded in a single-bond geometry to three equivalent Rb(1) and one B(1) atom. In the third F site, F(3) is bonded in a single-bond geometry to three equivalent Rb(1) and one B(1) atom.
RbBF4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 12-coordinate geometry to three equivalent F(2), three equivalent F(3), and six equivalent F(1) atoms. There is one shorter (2.88 Å) and two longer (3.36 Å) Rb(1)-F(2) bond lengths. There is one shorter (2.88 Å) and two longer (3.11 Å) Rb(1)-F(3) bond lengths. There are a spread of Rb(1)-F(1) bond distances ranging from 2.87-2.97 Å. B(1) is bonded in a tetrahedral geometry to one F(2), one F(3), and two equivalent F(1) atoms. The B(1)-F(2) bond length is 1.40 Å. The B(1)-F(3) bond length is 1.40 Å. Both B(1)-F(1) bond lengths are 1.41 Å. There are three inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to three equivalent Rb(1) and one B(1) atom. In the second F site, F(2) is bonded in a single-bond geometry to three equivalent Rb(1) and one B(1) atom. In the third F site, F(3) is bonded in a single-bond geometry to three equivalent Rb(1) and one B(1) atom.