KHo2F7 crystallizes in the monoclinic C2/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 10-coordinate geometry to one F(10), one F(3), one F(5), one F(9), two equivalent F(6), and four equivalent F(1) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one F(10), one F(3), one F(8), two equivalent F(2), and two equivalent F(6) atoms. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to one F(1), one F(10), one F(2), one F(4), one F(5), one F(6), one F(7), and one F(8) atom. In the second Ho site, Ho(2) is bonded in a body-centered cubic geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(9) atoms. In the third Ho site, Ho(3) is bonded in a 8-coordinate geometry to one F(8), one F(9), two equivalent F(2), two equivalent F(6), and two equivalent F(7) atoms. There are ten inequivalent F sites. In the first F site, F(7) is bonded in a distorted bent 150 degrees geometry to one Ho(1) and one Ho(3) atom. In the second F site, F(8) is bonded to one K(2), one Ho(3), and two equivalent Ho(1) atoms to form FKHo3 tetrahedra that share  a cornercorner with one F(10)K2Ho2 tetrahedra,  a cornercorner with one F(3)K2Ho2 tetrahedra,  a cornercorner with one F(9)KHo3 tetrahedra, corners with two equivalent F(1)K2Ho2 tetrahedra, corners with two equivalent F(2)KHo3 tetrahedra,  an edgeedge with one F(10)K2Ho2 tetrahedra, and edges with two equivalent F(2)KHo3 tetrahedra. In the third F site, F(9) is bonded to one K(1), one Ho(3), and two equivalent Ho(2) atoms to form distorted FKHo3 tetrahedra that share  a cornercorner with one F(10)K2Ho2 tetrahedra,  a cornercorner with one F(8)KHo3 tetrahedra, corners with two equivalent F(2)KHo3 tetrahedra, corners with four equivalent F(1)K2Ho2 tetrahedra, corners with five equivalent F(3)K2Ho2 tetrahedra,  an edgeedge with one F(9)KHo3 tetrahedra, edges with two equivalent F(1)K2Ho2 tetrahedra, and edges with two equivalent F(2)KHo3 tetrahedra. In the fourth F site, F(10) is bonded to one K(1), one K(2), and two equivalent Ho(1) atoms to form FK2Ho2 tetrahedra that share  a cornercorner with one F(8)KHo3 tetrahedra,  a cornercorner with one F(9)KHo3 tetrahedra, corners with two equivalent F(1)K2Ho2 tetrahedra, corners with four equivalent F(2)KHo3 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra,  an edgeedge with one F(8)KHo3 tetrahedra, and edges with two equivalent F(1)K2Ho2 tetrahedra. In the fifth F site, F(1) is bonded to two equivalent K(1), one Ho(1), and one Ho(2) atom to form FK2Ho2 tetrahedra that share  a cornercorner with one F(10)K2Ho2 tetrahedra,  a cornercorner with one F(2)KHo3 tetrahedra,  a cornercorner with one F(8)KHo3 tetrahedra, corners with two equivalent F(3)K2Ho2 tetrahedra, corners with two equivalent F(9)KHo3 tetrahedra, corners with five equivalent F(1)K2Ho2 tetrahedra,  an edgeedge with one F(1)K2Ho2 tetrahedra,  an edgeedge with one F(10)K2Ho2 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra,  an edgeedge with one F(2)KHo3 tetrahedra, and  an edgeedge with one F(9)KHo3 tetrahedra. In the sixth F site, F(2) is bonded to one K(2), one Ho(1), one Ho(2), and one Ho(3) atom to form FKHo3 tetrahedra that share  a cornercorner with one F(1)K2Ho2 tetrahedra,  a cornercorner with one F(3)K2Ho2 tetrahedra,  a cornercorner with one F(8)KHo3 tetrahedra,  a cornercorner with one F(9)KHo3 tetrahedra, corners with two equivalent F(10)K2Ho2 tetrahedra, corners with three equivalent F(2)KHo3 tetrahedra,  an edgeedge with one F(1)K2Ho2 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra,  an edgeedge with one F(8)KHo3 tetrahedra, and  an edgeedge with one F(9)KHo3 tetrahedra. In the seventh F site, F(3) is bonded to one K(1), one K(2), and two equivalent Ho(2) atoms to form FK2Ho2 tetrahedra that share  a cornercorner with one F(8)KHo3 tetrahedra, corners with two equivalent F(2)KHo3 tetrahedra, corners with four equivalent F(1)K2Ho2 tetrahedra, corners with five equivalent F(9)KHo3 tetrahedra,  an edgeedge with one F(10)K2Ho2 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra, edges with two equivalent F(1)K2Ho2 tetrahedra, and edges with two equivalent F(2)KHo3 tetrahedra. In the eighth F site, F(4) is bonded in a distorted bent 150 degrees geometry to two equivalent Ho(1) atoms. In the ninth F site, F(5) is bonded in a distorted bent 150 degrees geometry to one K(1) and two equivalent Ho(1) atoms. In the tenth F site, F(6) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Ho(1), and one Ho(3) atom.
KHo2F7 crystallizes in the monoclinic C2/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 10-coordinate geometry to one F(10), one F(3), one F(5), one F(9), two equivalent F(6), and four equivalent F(1) atoms. The K(1)-F(10) bond length is 2.64 Å. The K(1)-F(3) bond length is 2.69 Å. The K(1)-F(5) bond length is 2.88 Å. The K(1)-F(9) bond length is 2.76 Å. Both K(1)-F(6) bond lengths are 2.78 Å. There are two shorter (2.63 Å) and two longer (2.65 Å) K(1)-F(1) bond lengths. In the second K site, K(2) is bonded in a 5-coordinate geometry to one F(10), one F(3), one F(8), two equivalent F(2), and two equivalent F(6) atoms. The K(2)-F(10) bond length is 2.68 Å. The K(2)-F(3) bond length is 2.68 Å. The K(2)-F(8) bond length is 2.63 Å. Both K(2)-F(2) bond lengths are 2.71 Å. Both K(2)-F(6) bond lengths are 3.11 Å. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to one F(1), one F(10), one F(2), one F(4), one F(5), one F(6), one F(7), and one F(8) atom. The Ho(1)-F(1) bond length is 2.28 Å. The Ho(1)-F(10) bond length is 2.23 Å. The Ho(1)-F(2) bond length is 2.39 Å. The Ho(1)-F(4) bond length is 2.19 Å. The Ho(1)-F(5) bond length is 2.18 Å. The Ho(1)-F(6) bond length is 2.24 Å. The Ho(1)-F(7) bond length is 2.21 Å. The Ho(1)-F(8) bond length is 2.31 Å. In the second Ho site, Ho(2) is bonded in a body-centered cubic geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(9) atoms. Both Ho(2)-F(1) bond lengths are 2.19 Å. Both Ho(2)-F(2) bond lengths are 2.30 Å. Both Ho(2)-F(3) bond lengths are 2.27 Å. Both Ho(2)-F(9) bond lengths are 2.40 Å. In the third Ho site, Ho(3) is bonded in a 8-coordinate geometry to one F(8), one F(9), two equivalent F(2), two equivalent F(6), and two equivalent F(7) atoms. The Ho(3)-F(8) bond length is 2.30 Å. The Ho(3)-F(9) bond length is 2.29 Å. Both Ho(3)-F(2) bond lengths are 2.36 Å. Both Ho(3)-F(6) bond lengths are 2.21 Å. Both Ho(3)-F(7) bond lengths are 2.18 Å. There are ten inequivalent F sites. In the first F site, F(7) is bonded in a distorted bent 150 degrees geometry to one Ho(1) and one Ho(3) atom. In the second F site, F(8) is bonded to one K(2), one Ho(3), and two equivalent Ho(1) atoms to form FKHo3 tetrahedra that share  a cornercorner with one F(10)K2Ho2 tetrahedra,  a cornercorner with one F(3)K2Ho2 tetrahedra,  a cornercorner with one F(9)KHo3 tetrahedra, corners with two equivalent F(1)K2Ho2 tetrahedra, corners with two equivalent F(2)KHo3 tetrahedra,  an edgeedge with one F(10)K2Ho2 tetrahedra, and edges with two equivalent F(2)KHo3 tetrahedra. In the third F site, F(9) is bonded to one K(1), one Ho(3), and two equivalent Ho(2) atoms to form distorted FKHo3 tetrahedra that share  a cornercorner with one F(10)K2Ho2 tetrahedra,  a cornercorner with one F(8)KHo3 tetrahedra, corners with two equivalent F(2)KHo3 tetrahedra, corners with four equivalent F(1)K2Ho2 tetrahedra, corners with five equivalent F(3)K2Ho2 tetrahedra,  an edgeedge with one F(9)KHo3 tetrahedra, edges with two equivalent F(1)K2Ho2 tetrahedra, and edges with two equivalent F(2)KHo3 tetrahedra. In the fourth F site, F(10) is bonded to one K(1), one K(2), and two equivalent Ho(1) atoms to form FK2Ho2 tetrahedra that share  a cornercorner with one F(8)KHo3 tetrahedra,  a cornercorner with one F(9)KHo3 tetrahedra, corners with two equivalent F(1)K2Ho2 tetrahedra, corners with four equivalent F(2)KHo3 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra,  an edgeedge with one F(8)KHo3 tetrahedra, and edges with two equivalent F(1)K2Ho2 tetrahedra. In the fifth F site, F(1) is bonded to two equivalent K(1), one Ho(1), and one Ho(2) atom to form FK2Ho2 tetrahedra that share  a cornercorner with one F(10)K2Ho2 tetrahedra,  a cornercorner with one F(2)KHo3 tetrahedra,  a cornercorner with one F(8)KHo3 tetrahedra, corners with two equivalent F(3)K2Ho2 tetrahedra, corners with two equivalent F(9)KHo3 tetrahedra, corners with five equivalent F(1)K2Ho2 tetrahedra,  an edgeedge with one F(1)K2Ho2 tetrahedra,  an edgeedge with one F(10)K2Ho2 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra,  an edgeedge with one F(2)KHo3 tetrahedra, and  an edgeedge with one F(9)KHo3 tetrahedra. In the sixth F site, F(2) is bonded to one K(2), one Ho(1), one Ho(2), and one Ho(3) atom to form FKHo3 tetrahedra that share  a cornercorner with one F(1)K2Ho2 tetrahedra,  a cornercorner with one F(3)K2Ho2 tetrahedra,  a cornercorner with one F(8)KHo3 tetrahedra,  a cornercorner with one F(9)KHo3 tetrahedra, corners with two equivalent F(10)K2Ho2 tetrahedra, corners with three equivalent F(2)KHo3 tetrahedra,  an edgeedge with one F(1)K2Ho2 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra,  an edgeedge with one F(8)KHo3 tetrahedra, and  an edgeedge with one F(9)KHo3 tetrahedra. In the seventh F site, F(3) is bonded to one K(1), one K(2), and two equivalent Ho(2) atoms to form FK2Ho2 tetrahedra that share  a cornercorner with one F(8)KHo3 tetrahedra, corners with two equivalent F(2)KHo3 tetrahedra, corners with four equivalent F(1)K2Ho2 tetrahedra, corners with five equivalent F(9)KHo3 tetrahedra,  an edgeedge with one F(10)K2Ho2 tetrahedra,  an edgeedge with one F(3)K2Ho2 tetrahedra, edges with two equivalent F(1)K2Ho2 tetrahedra, and edges with two equivalent F(2)KHo3 tetrahedra. In the eighth F site, F(4) is bonded in a distorted bent 150 degrees geometry to two equivalent Ho(1) atoms. In the ninth F site, F(5) is bonded in a distorted bent 150 degrees geometry to one K(1) and two equivalent Ho(1) atoms. In the tenth F site, F(6) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Ho(1), and one Ho(3) atom.