CsTlF3 crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded in a 2-coordinate geometry to two equivalent F(2) and eight equivalent F(1) atoms. Tl(1) is bonded in a linear geometry to two equivalent F(2) and four equivalent F(1) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded in a 6-coordinate geometry to four equivalent Cs(1) and two equivalent Tl(1) atoms. In the second F site, F(2) is bonded in a distorted square co-planar geometry to two equivalent Cs(1) and two equivalent Tl(1) atoms.
CsTlF3 crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded in a 2-coordinate geometry to two equivalent F(2) and eight equivalent F(1) atoms. There is one shorter (2.70 Å) and one longer (2.82 Å) Cs(1)-F(2) bond length. There are four shorter (3.35 Å) and four longer (3.42 Å) Cs(1)-F(1) bond lengths. Tl(1) is bonded in a linear geometry to two equivalent F(2) and four equivalent F(1) atoms. Both Tl(1)-F(2) bond lengths are 1.95 Å. There are two shorter (2.76 Å) and two longer (2.77 Å) Tl(1)-F(1) bond lengths. There are two inequivalent F sites. In the first F site, F(1) is bonded in a 6-coordinate geometry to four equivalent Cs(1) and two equivalent Tl(1) atoms. In the second F site, F(2) is bonded in a distorted square co-planar geometry to two equivalent Cs(1) and two equivalent Tl(1) atoms.