ZnCo2O4 crystallizes in the triclinic P1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(13), one O(16), two equivalent O(11), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-54°. In the second Co site, Co(2) is bonded to one O(4), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-53°. In the third Co site, Co(3) is bonded to one O(1), one O(8), two equivalent O(10), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-53°. In the fourth Co site, Co(4) is bonded to one O(5), one O(6), two equivalent O(15), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-53°. In the fifth Co site, Co(5) is bonded to one O(11), one O(8), two equivalent O(14), and two equivalent O(16) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-53°. In the sixth Co site, Co(6) is bonded to one O(13), one O(2), two equivalent O(1), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-54°. In the seventh Co site, Co(7) is bonded to one O(12), one O(7), two equivalent O(10), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-52°. In the eighth Co site, Co(8) is bonded to one O(12), one O(15), two equivalent O(14), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-52°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent O(13), two equivalent O(4), and two equivalent O(5) atoms. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent O(16), two equivalent O(2), and two equivalent O(6) atoms. In the third Zn site, Zn(3) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(11), and two equivalent O(12) atoms. In the fourth Zn site, Zn(4) is bonded in a 6-coordinate geometry to two equivalent O(15), two equivalent O(7), and two equivalent O(8) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Co(3), two equivalent Co(6), and two equivalent Zn(3) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(8)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(11)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(12)Zn2Co2 tetrahedra,  an edgeedge with one O(11)Zn2Co3 trigonal bipyramid, edges with two equivalent O(1)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(2)Zn2Co3 trigonal bipyramids. In the second O site, O(2) is bonded to one Co(6), two equivalent Co(3), and two equivalent Zn(2) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(13)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(16)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(6)Zn2Co2 tetrahedra,  an edgeedge with one O(16)Zn2Co3 trigonal bipyramid, edges with two equivalent O(1)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(2)Zn2Co3 trigonal bipyramids. In the third O site, O(3) is bonded in a square co-planar geometry to two equivalent Co(2) and two equivalent Co(6) atoms. In the fourth O site, O(4) is bonded to one Co(2), two equivalent Co(7), and two equivalent Zn(1) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(6)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(5)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(13)Zn2Co2 tetrahedra,  an edgeedge with one O(5)Zn2Co3 trigonal bipyramid, edges with two equivalent O(4)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(7)Zn2Co3 trigonal bipyramids. In the fifth O site, O(5) is bonded to one Co(4), two equivalent Co(8), and two equivalent Zn(1) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(6)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(4)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(13)Zn2Co2 tetrahedra,  an edgeedge with one O(4)Zn2Co3 trigonal bipyramid, edges with two equivalent O(15)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(5)Zn2Co3 trigonal bipyramids. In the sixth O site, O(6) is bonded to one Co(2), one Co(4), and two equivalent Zn(2) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(6)Zn2Co2 tetrahedra,  a cornercorner with one O(4)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(5)Zn2Co3 trigonal bipyramid, corners with two equivalent O(15)Zn2Co3 trigonal bipyramids, corners with two equivalent O(16)Zn2Co3 trigonal bipyramids, corners with two equivalent O(2)Zn2Co3 trigonal bipyramids, corners with two equivalent O(7)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(16)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(2)Zn2Co3 trigonal bipyramid. In the seventh O site, O(7) is bonded to one Co(7), two equivalent Co(2), and two equivalent Zn(4) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(12)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(15)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(8)Zn2Co2 tetrahedra,  an edgeedge with one O(15)Zn2Co3 trigonal bipyramid, edges with two equivalent O(4)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(7)Zn2Co3 trigonal bipyramids. In the eighth O site, O(8) is bonded to one Co(3), one Co(5), and two equivalent Zn(4) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(8)Zn2Co2 tetrahedra,  a cornercorner with one O(1)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(11)Zn2Co3 trigonal bipyramid, corners with two equivalent O(15)Zn2Co3 trigonal bipyramids, corners with two equivalent O(16)Zn2Co3 trigonal bipyramids, corners with two equivalent O(2)Zn2Co3 trigonal bipyramids, corners with two equivalent O(7)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(15)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(7)Zn2Co3 trigonal bipyramid. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to two equivalent Co(1) and two equivalent Co(4) atoms. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Co(3) and two equivalent Co(7) atoms. In the eleventh O site, O(11) is bonded to one Co(5), two equivalent Co(1), and two equivalent Zn(3) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(8)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(1)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(12)Zn2Co2 tetrahedra,  an edgeedge with one O(1)Zn2Co3 trigonal bipyramid, edges with two equivalent O(11)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(16)Zn2Co3 trigonal bipyramids. In the twelfth O site, O(12) is bonded to one Co(7), one Co(8), and two equivalent Zn(3) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(12)Zn2Co2 tetrahedra,  a cornercorner with one O(15)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(7)Zn2Co3 trigonal bipyramid, corners with two equivalent O(1)Zn2Co3 trigonal bipyramids, corners with two equivalent O(11)Zn2Co3 trigonal bipyramids, corners with two equivalent O(4)Zn2Co3 trigonal bipyramids, corners with two equivalent O(5)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(1)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(11)Zn2Co3 trigonal bipyramid. In the thirteenth O site, O(13) is bonded to one Co(1), one Co(6), and two equivalent Zn(1) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(13)Zn2Co2 tetrahedra,  a cornercorner with one O(16)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(2)Zn2Co3 trigonal bipyramid, corners with two equivalent O(1)Zn2Co3 trigonal bipyramids, corners with two equivalent O(11)Zn2Co3 trigonal bipyramids, corners with two equivalent O(4)Zn2Co3 trigonal bipyramids, corners with two equivalent O(5)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(4)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(5)Zn2Co3 trigonal bipyramid. In the fourteenth O site, O(14) is bonded in a square co-planar geometry to two equivalent Co(5) and two equivalent Co(8) atoms. In the fifteenth O site, O(15) is bonded to one Co(8), two equivalent Co(4), and two equivalent Zn(4) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(12)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(7)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(8)Zn2Co2 tetrahedra,  an edgeedge with one O(7)Zn2Co3 trigonal bipyramid, edges with two equivalent O(15)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(5)Zn2Co3 trigonal bipyramids. In the sixteenth O site, O(16) is bonded to one Co(1), two equivalent Co(5), and two equivalent Zn(2) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(13)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(2)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(6)Zn2Co2 tetrahedra,  an edgeedge with one O(2)Zn2Co3 trigonal bipyramid, edges with two equivalent O(11)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(16)Zn2Co3 trigonal bipyramids.
ZnCo2O4 crystallizes in the triclinic P1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(13), one O(16), two equivalent O(11), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-54°. The Co(1)-O(13) bond length is 1.94 Å. The Co(1)-O(16) bond length is 2.01 Å. Both Co(1)-O(11) bond lengths are 2.05 Å. There is one shorter (2.07 Å) and one longer (2.08 Å) Co(1)-O(9) bond length. In the second Co site, Co(2) is bonded to one O(4), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-53°. The Co(2)-O(4) bond length is 2.00 Å. The Co(2)-O(6) bond length is 1.94 Å. There is one shorter (2.06 Å) and one longer (2.07 Å) Co(2)-O(3) bond length. There is one shorter (2.06 Å) and one longer (2.07 Å) Co(2)-O(7) bond length. In the third Co site, Co(3) is bonded to one O(1), one O(8), two equivalent O(10), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-53°. The Co(3)-O(1) bond length is 2.01 Å. The Co(3)-O(8) bond length is 1.94 Å. There is one shorter (2.07 Å) and one longer (2.08 Å) Co(3)-O(10) bond length. There is one shorter (2.05 Å) and one longer (2.06 Å) Co(3)-O(2) bond length. In the fourth Co site, Co(4) is bonded to one O(5), one O(6), two equivalent O(15), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-53°. The Co(4)-O(5) bond length is 2.00 Å. The Co(4)-O(6) bond length is 1.96 Å. There is one shorter (2.05 Å) and one longer (2.06 Å) Co(4)-O(15) bond length. There is one shorter (2.05 Å) and one longer (2.07 Å) Co(4)-O(9) bond length. In the fifth Co site, Co(5) is bonded to one O(11), one O(8), two equivalent O(14), and two equivalent O(16) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-53°. The Co(5)-O(11) bond length is 1.99 Å. The Co(5)-O(8) bond length is 1.96 Å. Both Co(5)-O(14) bond lengths are 2.06 Å. There is one shorter (2.05 Å) and one longer (2.06 Å) Co(5)-O(16) bond length. In the sixth Co site, Co(6) is bonded to one O(13), one O(2), two equivalent O(1), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 1-54°. The Co(6)-O(13) bond length is 1.95 Å. The Co(6)-O(2) bond length is 2.00 Å. There is one shorter (2.06 Å) and one longer (2.07 Å) Co(6)-O(1) bond length. Both Co(6)-O(3) bond lengths are 2.06 Å. In the seventh Co site, Co(7) is bonded to one O(12), one O(7), two equivalent O(10), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-52°. The Co(7)-O(12) bond length is 1.96 Å. The Co(7)-O(7) bond length is 2.00 Å. Both Co(7)-O(10) bond lengths are 2.06 Å. Both Co(7)-O(4) bond lengths are 2.05 Å. In the eighth Co site, Co(8) is bonded to one O(12), one O(15), two equivalent O(14), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 2-52°. The Co(8)-O(12) bond length is 1.94 Å. The Co(8)-O(15) bond length is 2.00 Å. There is one shorter (2.06 Å) and one longer (2.07 Å) Co(8)-O(14) bond length. There is one shorter (2.06 Å) and one longer (2.07 Å) Co(8)-O(5) bond length. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent O(13), two equivalent O(4), and two equivalent O(5) atoms. Both Zn(1)-O(13) bond lengths are 2.09 Å. There is one shorter (2.24 Å) and one longer (2.32 Å) Zn(1)-O(4) bond length. There is one shorter (2.23 Å) and one longer (2.25 Å) Zn(1)-O(5) bond length. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent O(16), two equivalent O(2), and two equivalent O(6) atoms. There is one shorter (2.22 Å) and one longer (2.29 Å) Zn(2)-O(16) bond length. There is one shorter (2.24 Å) and one longer (2.30 Å) Zn(2)-O(2) bond length. Both Zn(2)-O(6) bond lengths are 2.09 Å. In the third Zn site, Zn(3) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(11), and two equivalent O(12) atoms. There is one shorter (2.20 Å) and one longer (2.27 Å) Zn(3)-O(1) bond length. There is one shorter (2.27 Å) and one longer (2.35 Å) Zn(3)-O(11) bond length. There is one shorter (2.08 Å) and one longer (2.09 Å) Zn(3)-O(12) bond length. In the fourth Zn site, Zn(4) is bonded in a 6-coordinate geometry to two equivalent O(15), two equivalent O(7), and two equivalent O(8) atoms. There is one shorter (2.23 Å) and one longer (2.32 Å) Zn(4)-O(15) bond length. There is one shorter (2.23 Å) and one longer (2.28 Å) Zn(4)-O(7) bond length. There is one shorter (2.08 Å) and one longer (2.09 Å) Zn(4)-O(8) bond length. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Co(3), two equivalent Co(6), and two equivalent Zn(3) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(8)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(11)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(12)Zn2Co2 tetrahedra,  an edgeedge with one O(11)Zn2Co3 trigonal bipyramid, edges with two equivalent O(1)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(2)Zn2Co3 trigonal bipyramids. In the second O site, O(2) is bonded to one Co(6), two equivalent Co(3), and two equivalent Zn(2) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(13)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(16)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(6)Zn2Co2 tetrahedra,  an edgeedge with one O(16)Zn2Co3 trigonal bipyramid, edges with two equivalent O(1)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(2)Zn2Co3 trigonal bipyramids. In the third O site, O(3) is bonded in a square co-planar geometry to two equivalent Co(2) and two equivalent Co(6) atoms. In the fourth O site, O(4) is bonded to one Co(2), two equivalent Co(7), and two equivalent Zn(1) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(6)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(5)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(13)Zn2Co2 tetrahedra,  an edgeedge with one O(5)Zn2Co3 trigonal bipyramid, edges with two equivalent O(4)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(7)Zn2Co3 trigonal bipyramids. In the fifth O site, O(5) is bonded to one Co(4), two equivalent Co(8), and two equivalent Zn(1) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(6)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(4)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(13)Zn2Co2 tetrahedra,  an edgeedge with one O(4)Zn2Co3 trigonal bipyramid, edges with two equivalent O(15)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(5)Zn2Co3 trigonal bipyramids. In the sixth O site, O(6) is bonded to one Co(2), one Co(4), and two equivalent Zn(2) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(6)Zn2Co2 tetrahedra,  a cornercorner with one O(4)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(5)Zn2Co3 trigonal bipyramid, corners with two equivalent O(15)Zn2Co3 trigonal bipyramids, corners with two equivalent O(16)Zn2Co3 trigonal bipyramids, corners with two equivalent O(2)Zn2Co3 trigonal bipyramids, corners with two equivalent O(7)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(16)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(2)Zn2Co3 trigonal bipyramid. In the seventh O site, O(7) is bonded to one Co(7), two equivalent Co(2), and two equivalent Zn(4) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(12)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(15)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(8)Zn2Co2 tetrahedra,  an edgeedge with one O(15)Zn2Co3 trigonal bipyramid, edges with two equivalent O(4)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(7)Zn2Co3 trigonal bipyramids. In the eighth O site, O(8) is bonded to one Co(3), one Co(5), and two equivalent Zn(4) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(8)Zn2Co2 tetrahedra,  a cornercorner with one O(1)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(11)Zn2Co3 trigonal bipyramid, corners with two equivalent O(15)Zn2Co3 trigonal bipyramids, corners with two equivalent O(16)Zn2Co3 trigonal bipyramids, corners with two equivalent O(2)Zn2Co3 trigonal bipyramids, corners with two equivalent O(7)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(15)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(7)Zn2Co3 trigonal bipyramid. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to two equivalent Co(1) and two equivalent Co(4) atoms. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Co(3) and two equivalent Co(7) atoms. In the eleventh O site, O(11) is bonded to one Co(5), two equivalent Co(1), and two equivalent Zn(3) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(8)Zn2Co2 tetrahedra, corners with two equivalent O(12)Zn2Co2 tetrahedra, corners with two equivalent O(13)Zn2Co2 tetrahedra, corners with two equivalent O(1)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(12)Zn2Co2 tetrahedra,  an edgeedge with one O(1)Zn2Co3 trigonal bipyramid, edges with two equivalent O(11)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(16)Zn2Co3 trigonal bipyramids. In the twelfth O site, O(12) is bonded to one Co(7), one Co(8), and two equivalent Zn(3) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(12)Zn2Co2 tetrahedra,  a cornercorner with one O(15)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(7)Zn2Co3 trigonal bipyramid, corners with two equivalent O(1)Zn2Co3 trigonal bipyramids, corners with two equivalent O(11)Zn2Co3 trigonal bipyramids, corners with two equivalent O(4)Zn2Co3 trigonal bipyramids, corners with two equivalent O(5)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(1)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(11)Zn2Co3 trigonal bipyramid. In the thirteenth O site, O(13) is bonded to one Co(1), one Co(6), and two equivalent Zn(1) atoms to form OZn2Co2 tetrahedra that share corners with two equivalent O(13)Zn2Co2 tetrahedra,  a cornercorner with one O(16)Zn2Co3 trigonal bipyramid,  a cornercorner with one O(2)Zn2Co3 trigonal bipyramid, corners with two equivalent O(1)Zn2Co3 trigonal bipyramids, corners with two equivalent O(11)Zn2Co3 trigonal bipyramids, corners with two equivalent O(4)Zn2Co3 trigonal bipyramids, corners with two equivalent O(5)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(4)Zn2Co3 trigonal bipyramid, and  an edgeedge with one O(5)Zn2Co3 trigonal bipyramid. In the fourteenth O site, O(14) is bonded in a square co-planar geometry to two equivalent Co(5) and two equivalent Co(8) atoms. In the fifteenth O site, O(15) is bonded to one Co(8), two equivalent Co(4), and two equivalent Zn(4) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(12)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(7)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(8)Zn2Co2 tetrahedra,  an edgeedge with one O(7)Zn2Co3 trigonal bipyramid, edges with two equivalent O(15)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(5)Zn2Co3 trigonal bipyramids. In the sixteenth O site, O(16) is bonded to one Co(1), two equivalent Co(5), and two equivalent Zn(2) atoms to form distorted OZn2Co3 trigonal bipyramids that share  a cornercorner with one O(13)Zn2Co2 tetrahedra, corners with two equivalent O(6)Zn2Co2 tetrahedra, corners with two equivalent O(8)Zn2Co2 tetrahedra, corners with two equivalent O(2)Zn2Co3 trigonal bipyramids,  an edgeedge with one O(6)Zn2Co2 tetrahedra,  an edgeedge with one O(2)Zn2Co3 trigonal bipyramid, edges with two equivalent O(11)Zn2Co3 trigonal bipyramids, and edges with two equivalent O(16)Zn2Co3 trigonal bipyramids.