Zr2ON2 crystallizes in the monoclinic Cm space group. There are eight inequivalent Zr sites. In the first Zr site, Zr(1) is bonded in a 7-coordinate geometry to one N(6), two equivalent N(4), two equivalent N(5), one O(2), and one O(4) atom. In the second Zr site, Zr(2) is bonded in a 7-coordinate geometry to one N(1), one N(5), two equivalent N(7), one O(1), and two equivalent O(4) atoms. In the third Zr site, Zr(3) is bonded in a 7-coordinate geometry to one N(4), two equivalent N(6), two equivalent N(8), one O(2), and one O(3) atom. In the fourth Zr site, Zr(4) is bonded to one N(4), one N(8), two equivalent N(3), one O(3), and two equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing ZrN4O3 pentagonal bipyramids. In the fifth Zr site, Zr(5) is bonded to one N(5), one N(6), two equivalent N(1), one O(4), and two equivalent O(2) atoms to form distorted ZrN4O3 pentagonal bipyramids that share corners with two equivalent Zr(4)N4O3 pentagonal bipyramids,  an edgeedge with one Zr(4)N4O3 pentagonal bipyramid, edges with two equivalent Zr(5)N4O3 pentagonal bipyramids, and edges with two equivalent Zr(8)N6O pentagonal bipyramids. In the sixth Zr site, Zr(6) is bonded in a 7-coordinate geometry to one N(2), one N(3), one N(8), two equivalent N(7), and two equivalent O(3) atoms. In the seventh Zr site, Zr(7) is bonded in a 7-coordinate geometry to one N(2), one N(3), one N(7), two equivalent N(8), and two equivalent O(1) atoms. In the eighth Zr site, Zr(8) is bonded to one N(1), one N(7), two equivalent N(2), two equivalent N(5), and one O(1) atom to form distorted ZrN6O pentagonal bipyramids that share edges with two equivalent Zr(5)N4O3 pentagonal bipyramids and edges with two equivalent Zr(8)N6O pentagonal bipyramids. There are eight inequivalent N sites. In the first N site, N(1) is bonded to one Zr(2), one Zr(8), and two equivalent Zr(5) atoms to form NZr4 tetrahedra that share  a cornercorner with one N(5)Zr6 octahedra, corners with two equivalent O(2)Zr6 octahedra, corners with three equivalent N(7)Zr6 octahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra,  an edgeedge with one O(2)Zr6 octahedra, edges with two equivalent N(5)Zr6 octahedra,  an edgeedge with one O(1)Zr4 tetrahedra, and edges with two equivalent O(4)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-57°. In the second N site, N(2) is bonded to one Zr(6), one Zr(7), and two equivalent Zr(8) atoms to form NZr4 tetrahedra that share  a cornercorner with one N(7)Zr6 octahedra, corners with two equivalent N(5)Zr6 octahedra, corners with three equivalent N(8)Zr6 octahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra,  an edgeedge with one N(5)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra,  an edgeedge with one N(3)Zr4 tetrahedra, and edges with two equivalent O(1)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-60°. In the third N site, N(3) is bonded to one Zr(6), one Zr(7), and two equivalent Zr(4) atoms to form NZr4 tetrahedra that share  a cornercorner with one N(8)Zr6 octahedra, corners with two equivalent O(2)Zr6 octahedra, corners with three equivalent N(7)Zr6 octahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra,  an edgeedge with one O(2)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra,  an edgeedge with one N(2)Zr4 tetrahedra, and edges with two equivalent O(3)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 14-59°. In the fourth N site, N(4) is bonded to one Zr(3), one Zr(4), and two equivalent Zr(1) atoms to form NZr4 tetrahedra that share  a cornercorner with one O(2)Zr6 octahedra, corners with two equivalent N(5)Zr6 octahedra, corners with three equivalent N(8)Zr6 octahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra,  an edgeedge with one N(5)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one O(3)Zr4 tetrahedra, and edges with two equivalent N(6)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-54°. In the fifth N site, N(5) is bonded to one Zr(2), one Zr(5), two equivalent Zr(1), and two equivalent Zr(8) atoms to form NZr6 octahedra that share  a cornercorner with one N(1)Zr4 tetrahedra,  a cornercorner with one O(4)Zr4 tetrahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with three equivalent N(6)Zr4 tetrahedra, corners with three equivalent O(1)Zr4 tetrahedra, edges with two equivalent N(5)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one N(2)Zr4 tetrahedra,  an edgeedge with one N(4)Zr4 tetrahedra, edges with two equivalent N(1)Zr4 tetrahedra, and edges with two equivalent O(4)Zr4 tetrahedra. In the sixth N site, N(6) is bonded to one Zr(1), one Zr(5), and two equivalent Zr(3) atoms to form NZr4 tetrahedra that share  a cornercorner with one O(2)Zr6 octahedra, corners with two equivalent N(8)Zr6 octahedra, corners with three equivalent N(5)Zr6 octahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra,  an edgeedge with one N(8)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one O(4)Zr4 tetrahedra, and edges with two equivalent N(4)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-56°. In the seventh N site, N(7) is bonded to one Zr(7), one Zr(8), two equivalent Zr(2), and two equivalent Zr(6) atoms to form NZr6 octahedra that share  a cornercorner with one N(2)Zr4 tetrahedra,  a cornercorner with one O(1)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra, corners with three equivalent N(1)Zr4 tetrahedra, corners with three equivalent N(3)Zr4 tetrahedra, edges with two equivalent N(5)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra,  an edgeedge with one O(3)Zr4 tetrahedra,  an edgeedge with one O(4)Zr4 tetrahedra, edges with two equivalent N(2)Zr4 tetrahedra, and edges with two equivalent O(1)Zr4 tetrahedra. In the eighth N site, N(8) is bonded to one Zr(4), one Zr(6), two equivalent Zr(3), and two equivalent Zr(7) atoms to form NZr6 octahedra that share  a cornercorner with one N(3)Zr4 tetrahedra,  a cornercorner with one O(3)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra, corners with three equivalent N(2)Zr4 tetrahedra, corners with three equivalent N(4)Zr4 tetrahedra, edges with two equivalent N(7)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one N(6)Zr4 tetrahedra,  an edgeedge with one O(1)Zr4 tetrahedra, edges with two equivalent N(3)Zr4 tetrahedra, and edges with two equivalent O(3)Zr4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Zr(2), one Zr(8), and two equivalent Zr(7) atoms to form OZr4 tetrahedra that share  a cornercorner with one N(7)Zr6 octahedra, corners with two equivalent N(8)Zr6 octahedra, corners with three equivalent N(5)Zr6 octahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra,  an edgeedge with one N(8)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra,  an edgeedge with one N(1)Zr4 tetrahedra, and edges with two equivalent N(2)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-55°. In the second O site, O(2) is bonded to one Zr(1), one Zr(3), two equivalent Zr(4), and two equivalent Zr(5) atoms to form OZr6 octahedra that share  a cornercorner with one N(4)Zr4 tetrahedra,  a cornercorner with one N(6)Zr4 tetrahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with three equivalent O(3)Zr4 tetrahedra, corners with three equivalent O(4)Zr4 tetrahedra, edges with two equivalent N(5)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one N(1)Zr4 tetrahedra,  an edgeedge with one N(3)Zr4 tetrahedra, edges with two equivalent N(4)Zr4 tetrahedra, and edges with two equivalent N(6)Zr4 tetrahedra. In the third O site, O(3) is bonded to one Zr(3), one Zr(4), and two equivalent Zr(6) atoms to form OZr4 tetrahedra that share  a cornercorner with one N(8)Zr6 octahedra, corners with two equivalent N(7)Zr6 octahedra, corners with three equivalent O(2)Zr6 octahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra,  an edgeedge with one N(7)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra,  an edgeedge with one N(4)Zr4 tetrahedra, and edges with two equivalent N(3)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-56°. In the fourth O site, O(4) is bonded to one Zr(1), one Zr(5), and two equivalent Zr(2) atoms to form OZr4 tetrahedra that share  a cornercorner with one N(5)Zr6 octahedra, corners with two equivalent N(7)Zr6 octahedra, corners with three equivalent O(2)Zr6 octahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra,  an edgeedge with one N(7)Zr6 octahedra, edges with two equivalent N(5)Zr6 octahedra,  an edgeedge with one N(6)Zr4 tetrahedra, and edges with two equivalent N(1)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-56°.
Zr2ON2 crystallizes in the monoclinic Cm space group. There are eight inequivalent Zr sites. In the first Zr site, Zr(1) is bonded in a 7-coordinate geometry to one N(6), two equivalent N(4), two equivalent N(5), one O(2), and one O(4) atom. The Zr(1)-N(6) bond length is 2.23 Å. Both Zr(1)-N(4) bond lengths are 2.12 Å. Both Zr(1)-N(5) bond lengths are 2.51 Å. The Zr(1)-O(2) bond length is 2.49 Å. The Zr(1)-O(4) bond length is 2.13 Å. In the second Zr site, Zr(2) is bonded in a 7-coordinate geometry to one N(1), one N(5), two equivalent N(7), one O(1), and two equivalent O(4) atoms. The Zr(2)-N(1) bond length is 2.26 Å. The Zr(2)-N(5) bond length is 2.38 Å. Both Zr(2)-N(7) bond lengths are 2.42 Å. The Zr(2)-O(1) bond length is 2.13 Å. Both Zr(2)-O(4) bond lengths are 2.13 Å. In the third Zr site, Zr(3) is bonded in a 7-coordinate geometry to one N(4), two equivalent N(6), two equivalent N(8), one O(2), and one O(3) atom. The Zr(3)-N(4) bond length is 2.20 Å. Both Zr(3)-N(6) bond lengths are 2.11 Å. Both Zr(3)-N(8) bond lengths are 2.57 Å. The Zr(3)-O(2) bond length is 2.54 Å. The Zr(3)-O(3) bond length is 2.13 Å. In the fourth Zr site, Zr(4) is bonded to one N(4), one N(8), two equivalent N(3), one O(3), and two equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing ZrN4O3 pentagonal bipyramids. The Zr(4)-N(4) bond length is 2.12 Å. The Zr(4)-N(8) bond length is 2.43 Å. Both Zr(4)-N(3) bond lengths are 2.08 Å. The Zr(4)-O(3) bond length is 2.33 Å. Both Zr(4)-O(2) bond lengths are 2.52 Å. In the fifth Zr site, Zr(5) is bonded to one N(5), one N(6), two equivalent N(1), one O(4), and two equivalent O(2) atoms to form distorted ZrN4O3 pentagonal bipyramids that share corners with two equivalent Zr(4)N4O3 pentagonal bipyramids,  an edgeedge with one Zr(4)N4O3 pentagonal bipyramid, edges with two equivalent Zr(5)N4O3 pentagonal bipyramids, and edges with two equivalent Zr(8)N6O pentagonal bipyramids. The Zr(5)-N(5) bond length is 2.47 Å. The Zr(5)-N(6) bond length is 2.13 Å. Both Zr(5)-N(1) bond lengths are 2.10 Å. The Zr(5)-O(4) bond length is 2.28 Å. Both Zr(5)-O(2) bond lengths are 2.51 Å. In the sixth Zr site, Zr(6) is bonded in a 7-coordinate geometry to one N(2), one N(3), one N(8), two equivalent N(7), and two equivalent O(3) atoms. The Zr(6)-N(2) bond length is 2.08 Å. The Zr(6)-N(3) bond length is 2.25 Å. The Zr(6)-N(8) bond length is 2.54 Å. Both Zr(6)-N(7) bond lengths are 2.47 Å. Both Zr(6)-O(3) bond lengths are 2.13 Å. In the seventh Zr site, Zr(7) is bonded in a 7-coordinate geometry to one N(2), one N(3), one N(7), two equivalent N(8), and two equivalent O(1) atoms. The Zr(7)-N(2) bond length is 2.25 Å. The Zr(7)-N(3) bond length is 2.11 Å. The Zr(7)-N(7) bond length is 2.53 Å. Both Zr(7)-N(8) bond lengths are 2.40 Å. Both Zr(7)-O(1) bond lengths are 2.15 Å. In the eighth Zr site, Zr(8) is bonded to one N(1), one N(7), two equivalent N(2), two equivalent N(5), and one O(1) atom to form distorted ZrN6O pentagonal bipyramids that share edges with two equivalent Zr(5)N4O3 pentagonal bipyramids and edges with two equivalent Zr(8)N6O pentagonal bipyramids. The Zr(8)-N(1) bond length is 2.13 Å. The Zr(8)-N(7) bond length is 2.48 Å. Both Zr(8)-N(2) bond lengths are 2.13 Å. Both Zr(8)-N(5) bond lengths are 2.49 Å. The Zr(8)-O(1) bond length is 2.32 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded to one Zr(2), one Zr(8), and two equivalent Zr(5) atoms to form NZr4 tetrahedra that share  a cornercorner with one N(5)Zr6 octahedra, corners with two equivalent O(2)Zr6 octahedra, corners with three equivalent N(7)Zr6 octahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra,  an edgeedge with one O(2)Zr6 octahedra, edges with two equivalent N(5)Zr6 octahedra,  an edgeedge with one O(1)Zr4 tetrahedra, and edges with two equivalent O(4)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-57°. In the second N site, N(2) is bonded to one Zr(6), one Zr(7), and two equivalent Zr(8) atoms to form NZr4 tetrahedra that share  a cornercorner with one N(7)Zr6 octahedra, corners with two equivalent N(5)Zr6 octahedra, corners with three equivalent N(8)Zr6 octahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra,  an edgeedge with one N(5)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra,  an edgeedge with one N(3)Zr4 tetrahedra, and edges with two equivalent O(1)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-60°. In the third N site, N(3) is bonded to one Zr(6), one Zr(7), and two equivalent Zr(4) atoms to form NZr4 tetrahedra that share  a cornercorner with one N(8)Zr6 octahedra, corners with two equivalent O(2)Zr6 octahedra, corners with three equivalent N(7)Zr6 octahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra,  an edgeedge with one O(2)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra,  an edgeedge with one N(2)Zr4 tetrahedra, and edges with two equivalent O(3)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 14-59°. In the fourth N site, N(4) is bonded to one Zr(3), one Zr(4), and two equivalent Zr(1) atoms to form NZr4 tetrahedra that share  a cornercorner with one O(2)Zr6 octahedra, corners with two equivalent N(5)Zr6 octahedra, corners with three equivalent N(8)Zr6 octahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra,  an edgeedge with one N(5)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one O(3)Zr4 tetrahedra, and edges with two equivalent N(6)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-54°. In the fifth N site, N(5) is bonded to one Zr(2), one Zr(5), two equivalent Zr(1), and two equivalent Zr(8) atoms to form NZr6 octahedra that share  a cornercorner with one N(1)Zr4 tetrahedra,  a cornercorner with one O(4)Zr4 tetrahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with three equivalent N(6)Zr4 tetrahedra, corners with three equivalent O(1)Zr4 tetrahedra, edges with two equivalent N(5)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one N(2)Zr4 tetrahedra,  an edgeedge with one N(4)Zr4 tetrahedra, edges with two equivalent N(1)Zr4 tetrahedra, and edges with two equivalent O(4)Zr4 tetrahedra. In the sixth N site, N(6) is bonded to one Zr(1), one Zr(5), and two equivalent Zr(3) atoms to form NZr4 tetrahedra that share  a cornercorner with one O(2)Zr6 octahedra, corners with two equivalent N(8)Zr6 octahedra, corners with three equivalent N(5)Zr6 octahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra,  an edgeedge with one N(8)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one O(4)Zr4 tetrahedra, and edges with two equivalent N(4)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-56°. In the seventh N site, N(7) is bonded to one Zr(7), one Zr(8), two equivalent Zr(2), and two equivalent Zr(6) atoms to form NZr6 octahedra that share  a cornercorner with one N(2)Zr4 tetrahedra,  a cornercorner with one O(1)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra, corners with three equivalent N(1)Zr4 tetrahedra, corners with three equivalent N(3)Zr4 tetrahedra, edges with two equivalent N(5)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra,  an edgeedge with one O(3)Zr4 tetrahedra,  an edgeedge with one O(4)Zr4 tetrahedra, edges with two equivalent N(2)Zr4 tetrahedra, and edges with two equivalent O(1)Zr4 tetrahedra. In the eighth N site, N(8) is bonded to one Zr(4), one Zr(6), two equivalent Zr(3), and two equivalent Zr(7) atoms to form NZr6 octahedra that share  a cornercorner with one N(3)Zr4 tetrahedra,  a cornercorner with one O(3)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra, corners with three equivalent N(2)Zr4 tetrahedra, corners with three equivalent N(4)Zr4 tetrahedra, edges with two equivalent N(7)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one N(6)Zr4 tetrahedra,  an edgeedge with one O(1)Zr4 tetrahedra, edges with two equivalent N(3)Zr4 tetrahedra, and edges with two equivalent O(3)Zr4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Zr(2), one Zr(8), and two equivalent Zr(7) atoms to form OZr4 tetrahedra that share  a cornercorner with one N(7)Zr6 octahedra, corners with two equivalent N(8)Zr6 octahedra, corners with three equivalent N(5)Zr6 octahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra,  an edgeedge with one N(8)Zr6 octahedra, edges with two equivalent N(7)Zr6 octahedra,  an edgeedge with one N(1)Zr4 tetrahedra, and edges with two equivalent N(2)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-55°. In the second O site, O(2) is bonded to one Zr(1), one Zr(3), two equivalent Zr(4), and two equivalent Zr(5) atoms to form OZr6 octahedra that share  a cornercorner with one N(4)Zr4 tetrahedra,  a cornercorner with one N(6)Zr4 tetrahedra, corners with two equivalent N(1)Zr4 tetrahedra, corners with two equivalent N(3)Zr4 tetrahedra, corners with three equivalent O(3)Zr4 tetrahedra, corners with three equivalent O(4)Zr4 tetrahedra, edges with two equivalent N(5)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra, edges with two equivalent O(2)Zr6 octahedra,  an edgeedge with one N(1)Zr4 tetrahedra,  an edgeedge with one N(3)Zr4 tetrahedra, edges with two equivalent N(4)Zr4 tetrahedra, and edges with two equivalent N(6)Zr4 tetrahedra. In the third O site, O(3) is bonded to one Zr(3), one Zr(4), and two equivalent Zr(6) atoms to form OZr4 tetrahedra that share  a cornercorner with one N(8)Zr6 octahedra, corners with two equivalent N(7)Zr6 octahedra, corners with three equivalent O(2)Zr6 octahedra, corners with two equivalent N(2)Zr4 tetrahedra, corners with two equivalent N(6)Zr4 tetrahedra, corners with two equivalent O(3)Zr4 tetrahedra,  an edgeedge with one N(7)Zr6 octahedra, edges with two equivalent N(8)Zr6 octahedra,  an edgeedge with one N(4)Zr4 tetrahedra, and edges with two equivalent N(3)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-56°. In the fourth O site, O(4) is bonded to one Zr(1), one Zr(5), and two equivalent Zr(2) atoms to form OZr4 tetrahedra that share  a cornercorner with one N(5)Zr6 octahedra, corners with two equivalent N(7)Zr6 octahedra, corners with three equivalent O(2)Zr6 octahedra, corners with two equivalent N(4)Zr4 tetrahedra, corners with two equivalent O(1)Zr4 tetrahedra, corners with two equivalent O(4)Zr4 tetrahedra,  an edgeedge with one N(7)Zr6 octahedra, edges with two equivalent N(5)Zr6 octahedra,  an edgeedge with one N(6)Zr4 tetrahedra, and edges with two equivalent N(1)Zr4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-56°.