HoY7O12 is Spinel-like structured and crystallizes in the orthorhombic I2_12_12_1 space group. Ho(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form distorted HoO6 octahedra that share corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(3)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, edges with two equivalent Y(4)O6 octahedra, and edges with two equivalent Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. There are six inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of distorted corner and edge-sharing YO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Y site, Y(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form YO6 octahedra that share  a cornercorner with one Ho(1)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Ho(1)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. In the third Y site, Y(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form distorted YO6 octahedra that share corners with two equivalent Ho(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the fourth Y site, Y(4) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form distorted YO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(6)O6 octahedra, edges with two equivalent Ho(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the fifth Y site, Y(5) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms to form distorted YO6 octahedra that share corners with two equivalent Ho(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(3)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the sixth Y site, Y(6) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form distorted YO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(4)O6 octahedra, edges with two equivalent Ho(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Y(1), one Y(2), one Y(3), and one Y(4) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(5)Y3Ho trigonal pyramid,  a cornercorner with one O(6)Y3Ho trigonal pyramid,  a cornercorner with one O(3)Y4 trigonal pyramid, corners with three equivalent O(2)Y3Ho trigonal pyramids, corners with three equivalent O(1)Y4 trigonal pyramids, corners with three equivalent O(4)Y4 trigonal pyramids, edges with two equivalent O(5)Y3Ho trigonal pyramids, and edges with two equivalent O(3)Y4 trigonal pyramids. In the second O site, O(2) is bonded to one Ho(1), one Y(2), one Y(4), and one Y(6) atom to form OY3Ho trigonal pyramids that share  a cornercorner with one O(5)Y3Ho trigonal pyramid,  a cornercorner with one O(6)Y3Ho trigonal pyramid,  a cornercorner with one O(3)Y4 trigonal pyramid, corners with three equivalent O(2)Y3Ho trigonal pyramids, corners with three equivalent O(1)Y4 trigonal pyramids, corners with three equivalent O(4)Y4 trigonal pyramids, edges with two equivalent O(5)Y3Ho trigonal pyramids, and edges with two equivalent O(6)Y3Ho trigonal pyramids. In the third O site, O(3) is bonded to one Y(1), one Y(2), one Y(3), and one Y(5) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(2)Y3Ho trigonal pyramid,  a cornercorner with one O(1)Y4 trigonal pyramid,  a cornercorner with one O(4)Y4 trigonal pyramid, corners with three equivalent O(5)Y3Ho trigonal pyramids, corners with three equivalent O(6)Y3Ho trigonal pyramids, corners with three equivalent O(3)Y4 trigonal pyramids, edges with two equivalent O(1)Y4 trigonal pyramids, and edges with two equivalent O(4)Y4 trigonal pyramids. In the fourth O site, O(4) is bonded to one Y(1), one Y(2), one Y(5), and one Y(6) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(5)Y3Ho trigonal pyramid,  a cornercorner with one O(6)Y3Ho trigonal pyramid,  a cornercorner with one O(3)Y4 trigonal pyramid, corners with three equivalent O(2)Y3Ho trigonal pyramids, corners with three equivalent O(1)Y4 trigonal pyramids, corners with three equivalent O(4)Y4 trigonal pyramids, edges with two equivalent O(6)Y3Ho trigonal pyramids, and edges with two equivalent O(3)Y4 trigonal pyramids. In the fifth O site, O(5) is bonded to one Ho(1), one Y(2), one Y(3), and one Y(4) atom to form OY3Ho trigonal pyramids that share  a cornercorner with one O(2)Y3Ho trigonal pyramid,  a cornercorner with one O(1)Y4 trigonal pyramid,  a cornercorner with one O(4)Y4 trigonal pyramid, corners with three equivalent O(5)Y3Ho trigonal pyramids, corners with three equivalent O(6)Y3Ho trigonal pyramids, corners with three equivalent O(3)Y4 trigonal pyramids, edges with two equivalent O(2)Y3Ho trigonal pyramids, and edges with two equivalent O(1)Y4 trigonal pyramids. In the sixth O site, O(6) is bonded to one Ho(1), one Y(2), one Y(5), and one Y(6) atom to form OY3Ho trigonal pyramids that share  a cornercorner with one O(2)Y3Ho trigonal pyramid,  a cornercorner with one O(1)Y4 trigonal pyramid,  a cornercorner with one O(4)Y4 trigonal pyramid, corners with three equivalent O(5)Y3Ho trigonal pyramids, corners with three equivalent O(6)Y3Ho trigonal pyramids, corners with three equivalent O(3)Y4 trigonal pyramids, edges with two equivalent O(2)Y3Ho trigonal pyramids, and edges with two equivalent O(4)Y4 trigonal pyramids.
HoY7O12 is Spinel-like structured and crystallizes in the orthorhombic I2_12_12_1 space group. Ho(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form distorted HoO6 octahedra that share corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(3)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, edges with two equivalent Y(4)O6 octahedra, and edges with two equivalent Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. Both Ho(1)-O(2) bond lengths are 2.33 Å. Both Ho(1)-O(5) bond lengths are 2.24 Å. Both Ho(1)-O(6) bond lengths are 2.25 Å. There are six inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of distorted corner and edge-sharing YO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. Both Y(1)-O(1) bond lengths are 2.27 Å. Both Y(1)-O(3) bond lengths are 2.33 Å. Both Y(1)-O(4) bond lengths are 2.25 Å. In the second Y site, Y(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form YO6 octahedra that share  a cornercorner with one Ho(1)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Ho(1)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. The Y(2)-O(1) bond length is 2.28 Å. The Y(2)-O(2) bond length is 2.28 Å. The Y(2)-O(3) bond length is 2.28 Å. The Y(2)-O(4) bond length is 2.28 Å. The Y(2)-O(5) bond length is 2.28 Å. The Y(2)-O(6) bond length is 2.28 Å. In the third Y site, Y(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form distorted YO6 octahedra that share corners with two equivalent Ho(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. Both Y(3)-O(1) bond lengths are 2.33 Å. Both Y(3)-O(3) bond lengths are 2.25 Å. Both Y(3)-O(5) bond lengths are 2.27 Å. In the fourth Y site, Y(4) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form distorted YO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(6)O6 octahedra, edges with two equivalent Ho(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. Both Y(4)-O(1) bond lengths are 2.25 Å. Both Y(4)-O(2) bond lengths are 2.27 Å. Both Y(4)-O(5) bond lengths are 2.33 Å. In the fifth Y site, Y(5) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms to form distorted YO6 octahedra that share corners with two equivalent Ho(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(3)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. Both Y(5)-O(3) bond lengths are 2.27 Å. Both Y(5)-O(4) bond lengths are 2.33 Å. Both Y(5)-O(6) bond lengths are 2.25 Å. In the sixth Y site, Y(6) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form distorted YO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(4)O6 octahedra, edges with two equivalent Ho(1)O6 octahedra, edges with two equivalent Y(2)O6 octahedra, and edges with two equivalent Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. Both Y(6)-O(2) bond lengths are 2.24 Å. Both Y(6)-O(4) bond lengths are 2.27 Å. Both Y(6)-O(6) bond lengths are 2.34 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Y(1), one Y(2), one Y(3), and one Y(4) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(5)Y3Ho trigonal pyramid,  a cornercorner with one O(6)Y3Ho trigonal pyramid,  a cornercorner with one O(3)Y4 trigonal pyramid, corners with three equivalent O(2)Y3Ho trigonal pyramids, corners with three equivalent O(1)Y4 trigonal pyramids, corners with three equivalent O(4)Y4 trigonal pyramids, edges with two equivalent O(5)Y3Ho trigonal pyramids, and edges with two equivalent O(3)Y4 trigonal pyramids. In the second O site, O(2) is bonded to one Ho(1), one Y(2), one Y(4), and one Y(6) atom to form OY3Ho trigonal pyramids that share  a cornercorner with one O(5)Y3Ho trigonal pyramid,  a cornercorner with one O(6)Y3Ho trigonal pyramid,  a cornercorner with one O(3)Y4 trigonal pyramid, corners with three equivalent O(2)Y3Ho trigonal pyramids, corners with three equivalent O(1)Y4 trigonal pyramids, corners with three equivalent O(4)Y4 trigonal pyramids, edges with two equivalent O(5)Y3Ho trigonal pyramids, and edges with two equivalent O(6)Y3Ho trigonal pyramids. In the third O site, O(3) is bonded to one Y(1), one Y(2), one Y(3), and one Y(5) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(2)Y3Ho trigonal pyramid,  a cornercorner with one O(1)Y4 trigonal pyramid,  a cornercorner with one O(4)Y4 trigonal pyramid, corners with three equivalent O(5)Y3Ho trigonal pyramids, corners with three equivalent O(6)Y3Ho trigonal pyramids, corners with three equivalent O(3)Y4 trigonal pyramids, edges with two equivalent O(1)Y4 trigonal pyramids, and edges with two equivalent O(4)Y4 trigonal pyramids. In the fourth O site, O(4) is bonded to one Y(1), one Y(2), one Y(5), and one Y(6) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(5)Y3Ho trigonal pyramid,  a cornercorner with one O(6)Y3Ho trigonal pyramid,  a cornercorner with one O(3)Y4 trigonal pyramid, corners with three equivalent O(2)Y3Ho trigonal pyramids, corners with three equivalent O(1)Y4 trigonal pyramids, corners with three equivalent O(4)Y4 trigonal pyramids, edges with two equivalent O(6)Y3Ho trigonal pyramids, and edges with two equivalent O(3)Y4 trigonal pyramids. In the fifth O site, O(5) is bonded to one Ho(1), one Y(2), one Y(3), and one Y(4) atom to form OY3Ho trigonal pyramids that share  a cornercorner with one O(2)Y3Ho trigonal pyramid,  a cornercorner with one O(1)Y4 trigonal pyramid,  a cornercorner with one O(4)Y4 trigonal pyramid, corners with three equivalent O(5)Y3Ho trigonal pyramids, corners with three equivalent O(6)Y3Ho trigonal pyramids, corners with three equivalent O(3)Y4 trigonal pyramids, edges with two equivalent O(2)Y3Ho trigonal pyramids, and edges with two equivalent O(1)Y4 trigonal pyramids. In the sixth O site, O(6) is bonded to one Ho(1), one Y(2), one Y(5), and one Y(6) atom to form OY3Ho trigonal pyramids that share  a cornercorner with one O(2)Y3Ho trigonal pyramid,  a cornercorner with one O(1)Y4 trigonal pyramid,  a cornercorner with one O(4)Y4 trigonal pyramid, corners with three equivalent O(5)Y3Ho trigonal pyramids, corners with three equivalent O(6)Y3Ho trigonal pyramids, corners with three equivalent O(3)Y4 trigonal pyramids, edges with two equivalent O(2)Y3Ho trigonal pyramids, and edges with two equivalent O(4)Y4 trigonal pyramids.