CsBr2F7 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 10-coordinate geometry to one F(1), one F(3), one F(4), one F(6), two equivalent F(2), two equivalent F(5), and two equivalent F(7) atoms. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a rectangular see-saw-like geometry to one F(1), one F(2), one F(3), and one F(4) atom. In the second Br site, Br(2) is bonded in a rectangular see-saw-like geometry to one F(4), 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(1) and one Br(2) atom. In the second F site, F(7) is bonded in a 3-coordinate geometry to two equivalent Cs(1) and one Br(2) atom. In the third F site, F(1) is bonded in a distorted single-bond geometry to one Cs(1) and one Br(1) atom. In the fourth F site, F(2) is bonded in a 3-coordinate geometry to two equivalent Cs(1) and one Br(1) atom. In the fifth F site, F(3) is bonded in a distorted single-bond geometry to one Cs(1) and one Br(1) atom. In the sixth F site, F(4) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one Br(1), and one Br(2) atom. In the seventh F site, F(5) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one Br(2) atom.
CsBr2F7 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 10-coordinate geometry to one F(1), one F(3), one F(4), one F(6), two equivalent F(2), two equivalent F(5), and two equivalent F(7) atoms. The Cs(1)-F(1) bond length is 3.13 Å. The Cs(1)-F(3) bond length is 3.13 Å. The Cs(1)-F(4) bond length is 3.09 Å. The Cs(1)-F(6) bond length is 3.17 Å. There is one shorter (3.05 Å) and one longer (3.21 Å) Cs(1)-F(2) bond length. There is one shorter (3.09 Å) and one longer (3.16 Å) Cs(1)-F(5) bond length. There is one shorter (3.02 Å) and one longer (3.23 Å) Cs(1)-F(7) bond length. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a rectangular see-saw-like geometry to one F(1), one F(2), one F(3), and one F(4) atom. The Br(1)-F(1) bond length is 1.88 Å. The Br(1)-F(2) bond length is 1.90 Å. The Br(1)-F(3) bond length is 1.81 Å. The Br(1)-F(4) bond length is 2.12 Å. In the second Br site, Br(2) is bonded in a rectangular see-saw-like geometry to one F(4), one F(5), one F(6), and one F(7) atom. The Br(2)-F(4) bond length is 2.13 Å. The Br(2)-F(5) bond length is 1.89 Å. The Br(2)-F(6) bond length is 1.81 Å. The Br(2)-F(7) bond length is 1.88 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(1) and one Br(2) atom. In the second F site, F(7) is bonded in a 3-coordinate geometry to two equivalent Cs(1) and one Br(2) atom. In the third F site, F(1) is bonded in a distorted single-bond geometry to one Cs(1) and one Br(1) atom. In the fourth F site, F(2) is bonded in a 3-coordinate geometry to two equivalent Cs(1) and one Br(1) atom. In the fifth F site, F(3) is bonded in a distorted single-bond geometry to one Cs(1) and one Br(1) atom. In the sixth F site, F(4) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one Br(1), and one Br(2) atom. In the seventh F site, F(5) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one Br(2) atom.