CsTbF5 crystallizes in the orthorhombic Cmce space group. Cs(1) is bonded in a 11-coordinate geometry to one F(3), two equivalent F(1), two equivalent F(2), and six equivalent F(4) atoms. Tb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted linear geometry to two equivalent Cs(1) and two equivalent Tb(1) atoms. In the second F site, F(2) is bonded in a distorted linear geometry to two equivalent Cs(1) and two equivalent Tb(1) atoms. In the third F site, F(3) is bonded in a trigonal planar geometry to one Cs(1) and two equivalent Tb(1) atoms. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Tb(1) atom.
CsTbF5 crystallizes in the orthorhombic Cmce space group. Cs(1) is bonded in a 11-coordinate geometry to one F(3), two equivalent F(1), two equivalent F(2), and six equivalent F(4) atoms. The Cs(1)-F(3) bond length is 2.98 Å. Both Cs(1)-F(1) bond lengths are 3.30 Å. Both Cs(1)-F(2) bond lengths are 3.30 Å. There are a spread of Cs(1)-F(4) bond distances ranging from 3.09-3.15 Å. Tb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. There is one shorter (2.21 Å) and one longer (2.23 Å) Tb(1)-F(1) bond length. There is one shorter (2.21 Å) and one longer (2.23 Å) Tb(1)-F(2) bond length. Both Tb(1)-F(3) bond lengths are 2.53 Å. Both Tb(1)-F(4) bond lengths are 2.21 Å. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted linear geometry to two equivalent Cs(1) and two equivalent Tb(1) atoms. In the second F site, F(2) is bonded in a distorted linear geometry to two equivalent Cs(1) and two equivalent Tb(1) atoms. In the third F site, F(3) is bonded in a trigonal planar geometry to one Cs(1) and two equivalent Tb(1) atoms. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Tb(1) atom.