TmYO3 is Spinel-like structured and crystallizes in the monoclinic C2 space group. There are five inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(1), one O(3), one O(4), one O(6), one O(7), and one O(9) atom to form distorted TmO6 octahedra that share  a cornercorner with one Tm(4)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Tm(5)O6 octahedra,  an edgeedge with one Tm(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Y(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-58°. In the second Tm site, Tm(2) is bonded to one O(10), one O(11), one O(12), one O(2), one O(5), and one O(8) atom to form distorted TmO6 octahedra that share  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Y(2)O6 octahedra,  an edgeedge with one Tm(4)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Tm(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. In the third Tm site, Tm(3) is bonded to two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms to form distorted TmO6 octahedra that share corners with two equivalent Tm(2)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, edges with two equivalent Tm(1)O6 octahedra, edges with two equivalent Tm(5)O6 octahedra, and edges with two equivalent Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. In the fourth Tm site, Tm(4) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(6) atoms to form distorted TmO6 octahedra that share corners with two equivalent Tm(1)O6 octahedra, corners with two equivalent Tm(5)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Tm(2)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, and edges with two equivalent Y(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the fifth Tm site, Tm(5) is bonded to one O(11), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form distorted TmO6 octahedra that share  a cornercorner with one Tm(4)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Tm(1)O6 octahedra,  an edgeedge with one Tm(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Tm(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(10), one O(12), one O(2), one O(4), and one O(7) atom to form YO6 octahedra that share  a cornercorner with one Tm(1)O6 octahedra,  a cornercorner with one Tm(2)O6 octahedra,  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Tm(5)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  an edgeedge with one Tm(1)O6 octahedra,  an edgeedge with one Tm(2)O6 octahedra,  an edgeedge with one Tm(4)O6 octahedra,  an edgeedge with one Tm(5)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. In the second Y site, Y(2) is bonded to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(8) atom to form distorted YO6 octahedra that share  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Tm(2)O6 octahedra,  an edgeedge with one Tm(4)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Tm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the third Y site, Y(3) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(8) atoms to form distorted YO6 octahedra that share corners with two equivalent Tm(1)O6 octahedra, corners with two equivalent Tm(5)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, edges with two equivalent Tm(2)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 54-57°. In the fourth Y site, Y(4) is bonded to two equivalent O(11), two equivalent O(4), and two equivalent O(7) atoms to form distorted YO6 octahedra that share corners with two equivalent Tm(2)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Tm(1)O6 octahedra, edges with two equivalent Tm(5)O6 octahedra, and edges with two equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the fifth Y site, Y(5) is bonded to one O(11), one O(3), one O(5), one O(6), one O(8), and one O(9) atom to form YO6 octahedra that share  a cornercorner with one Tm(1)O6 octahedra,  a cornercorner with one Tm(2)O6 octahedra,  a cornercorner with one Tm(4)O6 octahedra,  a cornercorner with one Tm(5)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  an edgeedge with one Tm(1)O6 octahedra,  an edgeedge with one Tm(2)O6 octahedra,  an edgeedge with one Tm(3)O6 octahedra,  an edgeedge with one Tm(5)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Tm(1), one Y(1), one Y(2), and one Y(3) atom to form OY3Tm trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(5)Y2Tm2 trigonal pyramids, corners with two equivalent O(6)Y2Tm2 trigonal pyramids, corners with two equivalent O(7)Y2Tm2 trigonal pyramids,  an edgeedge with one O(4)Y3Tm tetrahedra,  an edgeedge with one O(10)Y2Tm2 trigonal pyramid,  an edgeedge with one O(3)Y2Tm2 trigonal pyramid, and  an edgeedge with one O(8)Y3Tm trigonal pyramid. In the second O site, O(2) is bonded to one Tm(2), one Tm(4), one Tm(5), and one Y(1) atom to form OYTm3 trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(5)Y2Tm2 trigonal pyramids, corners with two equivalent O(6)Y2Tm2 trigonal pyramids, corners with two equivalent O(7)Y2Tm2 trigonal pyramids,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid,  an edgeedge with one O(12)YTm3 trigonal pyramid, and edges with two equivalent O(10)Y2Tm2 trigonal pyramids. In the third O site, O(3) is bonded to one Tm(1), one Tm(3), one Y(2), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share corners with two equivalent O(4)Y3Tm tetrahedra,  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(8)Y3Tm trigonal pyramids, corners with two equivalent O(12)YTm3 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(9)YTm3 trigonal pyramids. In the fourth O site, O(4) is bonded to one Tm(1), one Y(1), one Y(2), and one Y(4) atom to form OY3Tm tetrahedra that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(10)Y2Tm2 trigonal pyramids, corners with two equivalent O(11)Y2Tm2 trigonal pyramids, corners with two equivalent O(3)Y2Tm2 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(7)Y2Tm2 trigonal pyramids. In the fifth O site, O(5) is bonded to one Tm(2), one Tm(5), one Y(3), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(1)Y3Tm trigonal pyramids, corners with two equivalent O(2)YTm3 trigonal pyramids, corners with two equivalent O(9)YTm3 trigonal pyramids,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid,  an edgeedge with one O(12)YTm3 trigonal pyramid, and edges with two equivalent O(8)Y3Tm trigonal pyramids. In the sixth O site, O(6) is bonded to one Tm(1), one Tm(4), one Y(2), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(1)Y3Tm trigonal pyramids, corners with two equivalent O(2)YTm3 trigonal pyramids, corners with two equivalent O(9)YTm3 trigonal pyramids,  an edgeedge with one O(4)Y3Tm tetrahedra,  an edgeedge with one O(10)Y2Tm2 trigonal pyramid,  an edgeedge with one O(3)Y2Tm2 trigonal pyramid, and  an edgeedge with one O(8)Y3Tm trigonal pyramid. In the seventh O site, O(7) is bonded to one Tm(1), one Tm(5), one Y(1), and one Y(4) atom to form OY2Tm2 trigonal pyramids that share  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(1)Y3Tm trigonal pyramids, corners with two equivalent O(2)YTm3 trigonal pyramids, corners with two equivalent O(9)YTm3 trigonal pyramids, edges with two equivalent O(4)Y3Tm tetrahedra,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid, and  an edgeedge with one O(12)YTm3 trigonal pyramid. In the eighth O site, O(8) is bonded to one Tm(2), one Y(2), one Y(3), and one Y(5) atom to form OY3Tm trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(10)Y2Tm2 trigonal pyramids, corners with two equivalent O(11)Y2Tm2 trigonal pyramids, corners with two equivalent O(3)Y2Tm2 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(5)Y2Tm2 trigonal pyramids. In the ninth O site, O(9) is bonded to one Tm(1), one Tm(3), one Tm(5), and one Y(5) atom to form OYTm3 trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(5)Y2Tm2 trigonal pyramids, corners with two equivalent O(6)Y2Tm2 trigonal pyramids, corners with two equivalent O(7)Y2Tm2 trigonal pyramids,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid,  an edgeedge with one O(12)YTm3 trigonal pyramid, and edges with two equivalent O(3)Y2Tm2 trigonal pyramids. In the tenth O site, O(10) is bonded to one Tm(2), one Tm(4), one Y(1), and one Y(2) atom to form OY2Tm2 trigonal pyramids that share corners with two equivalent O(4)Y3Tm tetrahedra,  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(8)Y3Tm trigonal pyramids, corners with two equivalent O(12)YTm3 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(2)YTm3 trigonal pyramids. In the eleventh O site, O(11) is bonded to one Tm(2), one Tm(5), one Y(4), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share corners with two equivalent O(4)Y3Tm tetrahedra,  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(8)Y3Tm trigonal pyramids, corners with two equivalent O(12)YTm3 trigonal pyramids,  an edgeedge with one O(5)Y2Tm2 trigonal pyramid,  an edgeedge with one O(7)Y2Tm2 trigonal pyramid,  an edgeedge with one O(2)YTm3 trigonal pyramid, and  an edgeedge with one O(9)YTm3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Tm(2), one Tm(3), one Tm(5), and one Y(1) atom to form OYTm3 trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(10)Y2Tm2 trigonal pyramids, corners with two equivalent O(11)Y2Tm2 trigonal pyramids, corners with two equivalent O(3)Y2Tm2 trigonal pyramids,  an edgeedge with one O(5)Y2Tm2 trigonal pyramid,  an edgeedge with one O(7)Y2Tm2 trigonal pyramid,  an edgeedge with one O(2)YTm3 trigonal pyramid, and  an edgeedge with one O(9)YTm3 trigonal pyramid.
TmYO3 is Spinel-like structured and crystallizes in the monoclinic C2 space group. There are five inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(1), one O(3), one O(4), one O(6), one O(7), and one O(9) atom to form distorted TmO6 octahedra that share  a cornercorner with one Tm(4)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Tm(5)O6 octahedra,  an edgeedge with one Tm(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Y(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-58°. The Tm(1)-O(1) bond length is 2.22 Å. The Tm(1)-O(3) bond length is 2.31 Å. The Tm(1)-O(4) bond length is 2.30 Å. The Tm(1)-O(6) bond length is 2.23 Å. The Tm(1)-O(7) bond length is 2.21 Å. The Tm(1)-O(9) bond length is 2.20 Å. In the second Tm site, Tm(2) is bonded to one O(10), one O(11), one O(12), one O(2), one O(5), and one O(8) atom to form distorted TmO6 octahedra that share  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Y(2)O6 octahedra,  an edgeedge with one Tm(4)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Tm(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. The Tm(2)-O(10) bond length is 2.20 Å. The Tm(2)-O(11) bond length is 2.22 Å. The Tm(2)-O(12) bond length is 2.23 Å. The Tm(2)-O(2) bond length is 2.31 Å. The Tm(2)-O(5) bond length is 2.30 Å. The Tm(2)-O(8) bond length is 2.21 Å. In the third Tm site, Tm(3) is bonded to two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms to form distorted TmO6 octahedra that share corners with two equivalent Tm(2)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, edges with two equivalent Tm(1)O6 octahedra, edges with two equivalent Tm(5)O6 octahedra, and edges with two equivalent Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. Both Tm(3)-O(12) bond lengths are 2.21 Å. Both Tm(3)-O(3) bond lengths are 2.22 Å. Both Tm(3)-O(9) bond lengths are 2.31 Å. In the fourth Tm site, Tm(4) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(6) atoms to form distorted TmO6 octahedra that share corners with two equivalent Tm(1)O6 octahedra, corners with two equivalent Tm(5)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Tm(2)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, and edges with two equivalent Y(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. Both Tm(4)-O(10) bond lengths are 2.29 Å. Both Tm(4)-O(2) bond lengths are 2.23 Å. Both Tm(4)-O(6) bond lengths are 2.21 Å. In the fifth Tm site, Tm(5) is bonded to one O(11), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form distorted TmO6 octahedra that share  a cornercorner with one Tm(4)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Tm(1)O6 octahedra,  an edgeedge with one Tm(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Tm(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. The Tm(5)-O(11) bond length is 2.30 Å. The Tm(5)-O(12) bond length is 2.31 Å. The Tm(5)-O(2) bond length is 2.21 Å. The Tm(5)-O(5) bond length is 2.20 Å. The Tm(5)-O(7) bond length is 2.22 Å. The Tm(5)-O(9) bond length is 2.23 Å. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(10), one O(12), one O(2), one O(4), and one O(7) atom to form YO6 octahedra that share  a cornercorner with one Tm(1)O6 octahedra,  a cornercorner with one Tm(2)O6 octahedra,  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Tm(5)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  an edgeedge with one Tm(1)O6 octahedra,  an edgeedge with one Tm(2)O6 octahedra,  an edgeedge with one Tm(4)O6 octahedra,  an edgeedge with one Tm(5)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. The Y(1)-O(1) bond length is 2.28 Å. The Y(1)-O(10) bond length is 2.28 Å. The Y(1)-O(12) bond length is 2.28 Å. The Y(1)-O(2) bond length is 2.27 Å. The Y(1)-O(4) bond length is 2.27 Å. The Y(1)-O(7) bond length is 2.28 Å. In the second Y site, Y(2) is bonded to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(8) atom to form distorted YO6 octahedra that share  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra, corners with two equivalent Tm(2)O6 octahedra,  an edgeedge with one Tm(4)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and edges with two equivalent Tm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. The Y(2)-O(1) bond length is 2.32 Å. The Y(2)-O(10) bond length is 2.27 Å. The Y(2)-O(3) bond length is 2.24 Å. The Y(2)-O(4) bond length is 2.22 Å. The Y(2)-O(6) bond length is 2.33 Å. The Y(2)-O(8) bond length is 2.27 Å. In the third Y site, Y(3) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(8) atoms to form distorted YO6 octahedra that share corners with two equivalent Tm(1)O6 octahedra, corners with two equivalent Tm(5)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, edges with two equivalent Tm(2)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 54-57°. Both Y(3)-O(1) bond lengths are 2.24 Å. Both Y(3)-O(5) bond lengths are 2.26 Å. Both Y(3)-O(8) bond lengths are 2.33 Å. In the fourth Y site, Y(4) is bonded to two equivalent O(11), two equivalent O(4), and two equivalent O(7) atoms to form distorted YO6 octahedra that share corners with two equivalent Tm(2)O6 octahedra, corners with two equivalent Y(2)O6 octahedra, corners with two equivalent Y(5)O6 octahedra, edges with two equivalent Tm(1)O6 octahedra, edges with two equivalent Tm(5)O6 octahedra, and edges with two equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. Both Y(4)-O(11) bond lengths are 2.24 Å. Both Y(4)-O(4) bond lengths are 2.25 Å. Both Y(4)-O(7) bond lengths are 2.34 Å. In the fifth Y site, Y(5) is bonded to one O(11), one O(3), one O(5), one O(6), one O(8), and one O(9) atom to form YO6 octahedra that share  a cornercorner with one Tm(1)O6 octahedra,  a cornercorner with one Tm(2)O6 octahedra,  a cornercorner with one Tm(4)O6 octahedra,  a cornercorner with one Tm(5)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  an edgeedge with one Tm(1)O6 octahedra,  an edgeedge with one Tm(2)O6 octahedra,  an edgeedge with one Tm(3)O6 octahedra,  an edgeedge with one Tm(5)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-58°. The Y(5)-O(11) bond length is 2.27 Å. The Y(5)-O(3) bond length is 2.27 Å. The Y(5)-O(5) bond length is 2.27 Å. The Y(5)-O(6) bond length is 2.28 Å. The Y(5)-O(8) bond length is 2.29 Å. The Y(5)-O(9) bond length is 2.27 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Tm(1), one Y(1), one Y(2), and one Y(3) atom to form OY3Tm trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(5)Y2Tm2 trigonal pyramids, corners with two equivalent O(6)Y2Tm2 trigonal pyramids, corners with two equivalent O(7)Y2Tm2 trigonal pyramids,  an edgeedge with one O(4)Y3Tm tetrahedra,  an edgeedge with one O(10)Y2Tm2 trigonal pyramid,  an edgeedge with one O(3)Y2Tm2 trigonal pyramid, and  an edgeedge with one O(8)Y3Tm trigonal pyramid. In the second O site, O(2) is bonded to one Tm(2), one Tm(4), one Tm(5), and one Y(1) atom to form OYTm3 trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(5)Y2Tm2 trigonal pyramids, corners with two equivalent O(6)Y2Tm2 trigonal pyramids, corners with two equivalent O(7)Y2Tm2 trigonal pyramids,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid,  an edgeedge with one O(12)YTm3 trigonal pyramid, and edges with two equivalent O(10)Y2Tm2 trigonal pyramids. In the third O site, O(3) is bonded to one Tm(1), one Tm(3), one Y(2), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share corners with two equivalent O(4)Y3Tm tetrahedra,  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(8)Y3Tm trigonal pyramids, corners with two equivalent O(12)YTm3 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(9)YTm3 trigonal pyramids. In the fourth O site, O(4) is bonded to one Tm(1), one Y(1), one Y(2), and one Y(4) atom to form OY3Tm tetrahedra that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(10)Y2Tm2 trigonal pyramids, corners with two equivalent O(11)Y2Tm2 trigonal pyramids, corners with two equivalent O(3)Y2Tm2 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(7)Y2Tm2 trigonal pyramids. In the fifth O site, O(5) is bonded to one Tm(2), one Tm(5), one Y(3), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(1)Y3Tm trigonal pyramids, corners with two equivalent O(2)YTm3 trigonal pyramids, corners with two equivalent O(9)YTm3 trigonal pyramids,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid,  an edgeedge with one O(12)YTm3 trigonal pyramid, and edges with two equivalent O(8)Y3Tm trigonal pyramids. In the sixth O site, O(6) is bonded to one Tm(1), one Tm(4), one Y(2), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(1)Y3Tm trigonal pyramids, corners with two equivalent O(2)YTm3 trigonal pyramids, corners with two equivalent O(9)YTm3 trigonal pyramids,  an edgeedge with one O(4)Y3Tm tetrahedra,  an edgeedge with one O(10)Y2Tm2 trigonal pyramid,  an edgeedge with one O(3)Y2Tm2 trigonal pyramid, and  an edgeedge with one O(8)Y3Tm trigonal pyramid. In the seventh O site, O(7) is bonded to one Tm(1), one Tm(5), one Y(1), and one Y(4) atom to form OY2Tm2 trigonal pyramids that share  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(1)Y3Tm trigonal pyramids, corners with two equivalent O(2)YTm3 trigonal pyramids, corners with two equivalent O(9)YTm3 trigonal pyramids, edges with two equivalent O(4)Y3Tm tetrahedra,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid, and  an edgeedge with one O(12)YTm3 trigonal pyramid. In the eighth O site, O(8) is bonded to one Tm(2), one Y(2), one Y(3), and one Y(5) atom to form OY3Tm trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(10)Y2Tm2 trigonal pyramids, corners with two equivalent O(11)Y2Tm2 trigonal pyramids, corners with two equivalent O(3)Y2Tm2 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(5)Y2Tm2 trigonal pyramids. In the ninth O site, O(9) is bonded to one Tm(1), one Tm(3), one Tm(5), and one Y(5) atom to form OYTm3 trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(5)Y2Tm2 trigonal pyramids, corners with two equivalent O(6)Y2Tm2 trigonal pyramids, corners with two equivalent O(7)Y2Tm2 trigonal pyramids,  an edgeedge with one O(11)Y2Tm2 trigonal pyramid,  an edgeedge with one O(12)YTm3 trigonal pyramid, and edges with two equivalent O(3)Y2Tm2 trigonal pyramids. In the tenth O site, O(10) is bonded to one Tm(2), one Tm(4), one Y(1), and one Y(2) atom to form OY2Tm2 trigonal pyramids that share corners with two equivalent O(4)Y3Tm tetrahedra,  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(8)Y3Tm trigonal pyramids, corners with two equivalent O(12)YTm3 trigonal pyramids,  an edgeedge with one O(6)Y2Tm2 trigonal pyramid,  an edgeedge with one O(1)Y3Tm trigonal pyramid, and edges with two equivalent O(2)YTm3 trigonal pyramids. In the eleventh O site, O(11) is bonded to one Tm(2), one Tm(5), one Y(4), and one Y(5) atom to form OY2Tm2 trigonal pyramids that share corners with two equivalent O(4)Y3Tm tetrahedra,  a cornercorner with one O(10)Y2Tm2 trigonal pyramid,  a cornercorner with one O(11)Y2Tm2 trigonal pyramid,  a cornercorner with one O(3)Y2Tm2 trigonal pyramid,  a cornercorner with one O(5)Y2Tm2 trigonal pyramid,  a cornercorner with one O(6)Y2Tm2 trigonal pyramid,  a cornercorner with one O(7)Y2Tm2 trigonal pyramid, corners with two equivalent O(8)Y3Tm trigonal pyramids, corners with two equivalent O(12)YTm3 trigonal pyramids,  an edgeedge with one O(5)Y2Tm2 trigonal pyramid,  an edgeedge with one O(7)Y2Tm2 trigonal pyramid,  an edgeedge with one O(2)YTm3 trigonal pyramid, and  an edgeedge with one O(9)YTm3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Tm(2), one Tm(3), one Tm(5), and one Y(1) atom to form OYTm3 trigonal pyramids that share  a cornercorner with one O(4)Y3Tm tetrahedra,  a cornercorner with one O(1)Y3Tm trigonal pyramid,  a cornercorner with one O(8)Y3Tm trigonal pyramid,  a cornercorner with one O(12)YTm3 trigonal pyramid,  a cornercorner with one O(2)YTm3 trigonal pyramid,  a cornercorner with one O(9)YTm3 trigonal pyramid, corners with two equivalent O(10)Y2Tm2 trigonal pyramids, corners with two equivalent O(11)Y2Tm2 trigonal pyramids, corners with two equivalent O(3)Y2Tm2 trigonal pyramids,  an edgeedge with one O(5)Y2Tm2 trigonal pyramid,  an edgeedge with one O(7)Y2Tm2 trigonal pyramid,  an edgeedge with one O(2)YTm3 trigonal pyramid, and  an edgeedge with one O(9)YTm3 trigonal pyramid.