Cs2UF7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 1-coordinate geometry to one F(4) atom. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to one F(1), one F(5), one F(6), one F(7), and two equivalent F(4) atoms. U(1) is bonded in an octahedral geometry to one F(1), one F(2), one F(3), one F(5), one F(6), and one F(7) atom. There are seven inequivalent F sites. In the first F site, F(6) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom. In the second F site, F(7) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom. In the third F site, F(1) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom. In the fourth F site, F(2) is bonded in a distorted single-bond geometry to one U(1) atom. In the fifth F site, F(3) is bonded in a distorted single-bond geometry to one U(1) atom. In the sixth F site, F(4) is bonded in a trigonal planar geometry to one Cs(1) and two equivalent Cs(2) atoms. In the seventh F site, F(5) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom.
Cs2UF7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 1-coordinate geometry to one F(4) atom. The Cs(1)-F(4) bond length is 2.65 Å. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to one F(1), one F(5), one F(6), one F(7), and two equivalent F(4) atoms. The Cs(2)-F(1) bond length is 3.36 Å. The Cs(2)-F(5) bond length is 3.25 Å. The Cs(2)-F(6) bond length is 3.25 Å. The Cs(2)-F(7) bond length is 3.14 Å. There is one shorter (2.77 Å) and one longer (2.78 Å) Cs(2)-F(4) bond length. U(1) is bonded in an octahedral geometry to one F(1), one F(2), one F(3), one F(5), one F(6), and one F(7) atom. The U(1)-F(1) bond length is 2.11 Å. The U(1)-F(2) bond length is 2.09 Å. The U(1)-F(3) bond length is 2.09 Å. The U(1)-F(5) bond length is 2.09 Å. The U(1)-F(6) bond length is 2.09 Å. The U(1)-F(7) bond length is 2.09 Å. There are seven inequivalent F sites. In the first F site, F(6) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom. In the second F site, F(7) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom. In the third F site, F(1) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom. In the fourth F site, F(2) is bonded in a distorted single-bond geometry to one U(1) atom. In the fifth F site, F(3) is bonded in a distorted single-bond geometry to one U(1) atom. In the sixth F site, F(4) is bonded in a trigonal planar geometry to one Cs(1) and two equivalent Cs(2) atoms. In the seventh F site, F(5) is bonded in a distorted single-bond geometry to one Cs(2) and one U(1) atom.