Sr12Co6Zn2O25 crystallizes in the monoclinic C2/m space group. There are five inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and three equivalent O(2) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a distorted q6 geometry to one O(8), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. In the fifth Sr site, Sr(5) is bonded in a distorted q6 geometry to one O(8), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form CoO5 trigonal bipyramids that share corners with two equivalent Co(2)O6 octahedra and corners with two equivalent Zn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 11-12°. In the second Co site, Co(2) is bonded to one O(3), one O(8), two equivalent O(5), and two equivalent O(7) atoms to form CoO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra and corners with four equivalent Co(1)O5 trigonal bipyramids. The corner-sharing octahedra are not tilted. Zn(1) is bonded to one O(1), two equivalent O(4), and two equivalent O(6) atoms to form ZnO5 square pyramids that share corners with four equivalent Co(1)O5 trigonal bipyramids. There are eight inequivalent O sites. In the first O site, O(8) is bonded to two equivalent Sr(4), two equivalent Sr(5), and two equivalent Co(2) atoms to form distorted OSr4Co2 octahedra that share corners with two equivalent O(3)Sr5Co octahedra, corners with eight equivalent O(4)Sr4ZnCo octahedra, corners with eight equivalent O(6)Sr4ZnCo octahedra, faces with four equivalent O(5)Sr4Co2 octahedra, and faces with four equivalent O(7)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-58°. In the second O site, O(1) is bonded in a 6-coordinate geometry to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Zn(1) atom. In the third O site, O(2) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), three equivalent Sr(2), and one Co(1) atom. In the fourth O site, O(3) is bonded to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), and one Co(2) atom to form distorted OSr5Co octahedra that share  a cornercorner with one O(8)Sr4Co2 octahedra, corners with two equivalent O(7)Sr4Co2 octahedra, corners with four equivalent O(4)Sr4ZnCo octahedra, corners with six equivalent O(6)Sr4ZnCo octahedra,  an edgeedge with one O(3)Sr5Co octahedra, faces with two equivalent O(5)Sr4Co2 octahedra, and faces with two equivalent O(7)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-59°. In the fifth O site, O(4) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(5), one Co(1), and one Zn(1) atom to form distorted OSr4ZnCo octahedra that share  a cornercorner with one O(5)Sr4Co2 octahedra,  a cornercorner with one O(4)Sr4ZnCo octahedra, corners with two equivalent O(8)Sr4Co2 octahedra, corners with two equivalent O(3)Sr5Co octahedra, corners with three equivalent O(7)Sr4Co2 octahedra, corners with three equivalent O(6)Sr4ZnCo octahedra,  an edgeedge with one O(6)Sr4ZnCo octahedra, edges with two equivalent O(5)Sr4Co2 octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra, and  a faceface with one O(6)Sr4ZnCo octahedra. The corner-sharing octahedral tilt angles range from 5-68°. In the sixth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(5), one Co(1), and one Co(2) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(5)Sr4Co2 octahedra,  a cornercorner with one O(4)Sr4ZnCo octahedra, corners with three equivalent O(7)Sr4Co2 octahedra, corners with three equivalent O(6)Sr4ZnCo octahedra,  an edgeedge with one O(7)Sr4Co2 octahedra, edges with two equivalent O(4)Sr4ZnCo octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(8)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra,  a faceface with one O(6)Sr4ZnCo octahedra, and  a faceface with one O(3)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 5-68°. In the seventh O site, O(6) is bonded to one Sr(2), one Sr(3), one Sr(4), one Sr(5), one Co(1), and one Zn(1) atom to form distorted OSr4ZnCo octahedra that share  a cornercorner with one O(7)Sr4Co2 octahedra,  a cornercorner with one O(6)Sr4ZnCo octahedra, corners with two equivalent O(8)Sr4Co2 octahedra, corners with three equivalent O(5)Sr4Co2 octahedra, corners with three equivalent O(4)Sr4ZnCo octahedra, corners with three equivalent O(3)Sr5Co octahedra,  an edgeedge with one O(4)Sr4ZnCo octahedra, edges with two equivalent O(7)Sr4Co2 octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra, and  a faceface with one O(6)Sr4ZnCo octahedra. The corner-sharing octahedral tilt angles range from 5-68°. In the eighth O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(4), one Sr(5), one Co(1), and one Co(2) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(7)Sr4Co2 octahedra,  a cornercorner with one O(6)Sr4ZnCo octahedra,  a cornercorner with one O(3)Sr5Co octahedra, corners with three equivalent O(5)Sr4Co2 octahedra, corners with three equivalent O(4)Sr4ZnCo octahedra,  an edgeedge with one O(5)Sr4Co2 octahedra, edges with two equivalent O(6)Sr4ZnCo octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(8)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra,  a faceface with one O(6)Sr4ZnCo octahedra, and  a faceface with one O(3)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 5-68°.
Sr12Co6Zn2O25 crystallizes in the monoclinic C2/m space group. There are five inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. The Sr(1)-O(3) bond length is 2.85 Å. There is one shorter (2.44 Å) and one longer (2.81 Å) Sr(1)-O(1) bond length. Both Sr(1)-O(2) bond lengths are 2.83 Å. Both Sr(1)-O(4) bond lengths are 2.73 Å. Both Sr(1)-O(5) bond lengths are 2.66 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and three equivalent O(2) atoms. The Sr(2)-O(1) bond length is 2.77 Å. The Sr(2)-O(3) bond length is 2.83 Å. The Sr(2)-O(4) bond length is 2.70 Å. The Sr(2)-O(5) bond length is 2.64 Å. The Sr(2)-O(6) bond length is 2.71 Å. The Sr(2)-O(7) bond length is 2.65 Å. There are a spread of Sr(2)-O(2) bond distances ranging from 2.51-2.81 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. The Sr(3)-O(1) bond length is 2.72 Å. Both Sr(3)-O(2) bond lengths are 2.78 Å. There is one shorter (2.68 Å) and one longer (2.81 Å) Sr(3)-O(3) bond length. Both Sr(3)-O(6) bond lengths are 2.72 Å. Both Sr(3)-O(7) bond lengths are 2.66 Å. In the fourth Sr site, Sr(4) is bonded in a distorted q6 geometry to one O(8), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. The Sr(4)-O(8) bond length is 2.70 Å. Both Sr(4)-O(4) bond lengths are 2.62 Å. Both Sr(4)-O(5) bond lengths are 2.65 Å. Both Sr(4)-O(6) bond lengths are 2.62 Å. Both Sr(4)-O(7) bond lengths are 2.64 Å. In the fifth Sr site, Sr(5) is bonded in a distorted q6 geometry to one O(8), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. The Sr(5)-O(8) bond length is 2.70 Å. Both Sr(5)-O(4) bond lengths are 2.62 Å. Both Sr(5)-O(5) bond lengths are 2.64 Å. Both Sr(5)-O(6) bond lengths are 2.62 Å. Both Sr(5)-O(7) bond lengths are 2.65 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form CoO5 trigonal bipyramids that share corners with two equivalent Co(2)O6 octahedra and corners with two equivalent Zn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 11-12°. The Co(1)-O(2) bond length is 1.86 Å. The Co(1)-O(4) bond length is 1.92 Å. The Co(1)-O(5) bond length is 1.88 Å. The Co(1)-O(6) bond length is 1.92 Å. The Co(1)-O(7) bond length is 1.88 Å. In the second Co site, Co(2) is bonded to one O(3), one O(8), two equivalent O(5), and two equivalent O(7) atoms to form CoO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra and corners with four equivalent Co(1)O5 trigonal bipyramids. The corner-sharing octahedra are not tilted. The Co(2)-O(3) bond length is 1.83 Å. The Co(2)-O(8) bond length is 1.93 Å. Both Co(2)-O(5) bond lengths are 2.07 Å. Both Co(2)-O(7) bond lengths are 2.07 Å. Zn(1) is bonded to one O(1), two equivalent O(4), and two equivalent O(6) atoms to form ZnO5 square pyramids that share corners with four equivalent Co(1)O5 trigonal bipyramids. The Zn(1)-O(1) bond length is 1.97 Å. Both Zn(1)-O(4) bond lengths are 2.09 Å. Both Zn(1)-O(6) bond lengths are 2.09 Å. There are eight inequivalent O sites. In the first O site, O(8) is bonded to two equivalent Sr(4), two equivalent Sr(5), and two equivalent Co(2) atoms to form distorted OSr4Co2 octahedra that share corners with two equivalent O(3)Sr5Co octahedra, corners with eight equivalent O(4)Sr4ZnCo octahedra, corners with eight equivalent O(6)Sr4ZnCo octahedra, faces with four equivalent O(5)Sr4Co2 octahedra, and faces with four equivalent O(7)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-58°. In the second O site, O(1) is bonded in a 6-coordinate geometry to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Zn(1) atom. In the third O site, O(2) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), three equivalent Sr(2), and one Co(1) atom. In the fourth O site, O(3) is bonded to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), and one Co(2) atom to form distorted OSr5Co octahedra that share  a cornercorner with one O(8)Sr4Co2 octahedra, corners with two equivalent O(7)Sr4Co2 octahedra, corners with four equivalent O(4)Sr4ZnCo octahedra, corners with six equivalent O(6)Sr4ZnCo octahedra,  an edgeedge with one O(3)Sr5Co octahedra, faces with two equivalent O(5)Sr4Co2 octahedra, and faces with two equivalent O(7)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-59°. In the fifth O site, O(4) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(5), one Co(1), and one Zn(1) atom to form distorted OSr4ZnCo octahedra that share  a cornercorner with one O(5)Sr4Co2 octahedra,  a cornercorner with one O(4)Sr4ZnCo octahedra, corners with two equivalent O(8)Sr4Co2 octahedra, corners with two equivalent O(3)Sr5Co octahedra, corners with three equivalent O(7)Sr4Co2 octahedra, corners with three equivalent O(6)Sr4ZnCo octahedra,  an edgeedge with one O(6)Sr4ZnCo octahedra, edges with two equivalent O(5)Sr4Co2 octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra, and  a faceface with one O(6)Sr4ZnCo octahedra. The corner-sharing octahedral tilt angles range from 5-68°. In the sixth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(5), one Co(1), and one Co(2) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(5)Sr4Co2 octahedra,  a cornercorner with one O(4)Sr4ZnCo octahedra, corners with three equivalent O(7)Sr4Co2 octahedra, corners with three equivalent O(6)Sr4ZnCo octahedra,  an edgeedge with one O(7)Sr4Co2 octahedra, edges with two equivalent O(4)Sr4ZnCo octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(8)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra,  a faceface with one O(6)Sr4ZnCo octahedra, and  a faceface with one O(3)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 5-68°. In the seventh O site, O(6) is bonded to one Sr(2), one Sr(3), one Sr(4), one Sr(5), one Co(1), and one Zn(1) atom to form distorted OSr4ZnCo octahedra that share  a cornercorner with one O(7)Sr4Co2 octahedra,  a cornercorner with one O(6)Sr4ZnCo octahedra, corners with two equivalent O(8)Sr4Co2 octahedra, corners with three equivalent O(5)Sr4Co2 octahedra, corners with three equivalent O(4)Sr4ZnCo octahedra, corners with three equivalent O(3)Sr5Co octahedra,  an edgeedge with one O(4)Sr4ZnCo octahedra, edges with two equivalent O(7)Sr4Co2 octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra, and  a faceface with one O(6)Sr4ZnCo octahedra. The corner-sharing octahedral tilt angles range from 5-68°. In the eighth O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(4), one Sr(5), one Co(1), and one Co(2) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(7)Sr4Co2 octahedra,  a cornercorner with one O(6)Sr4ZnCo octahedra,  a cornercorner with one O(3)Sr5Co octahedra, corners with three equivalent O(5)Sr4Co2 octahedra, corners with three equivalent O(4)Sr4ZnCo octahedra,  an edgeedge with one O(5)Sr4Co2 octahedra, edges with two equivalent O(6)Sr4ZnCo octahedra,  a faceface with one O(5)Sr4Co2 octahedra,  a faceface with one O(7)Sr4Co2 octahedra,  a faceface with one O(8)Sr4Co2 octahedra,  a faceface with one O(4)Sr4ZnCo octahedra,  a faceface with one O(6)Sr4ZnCo octahedra, and  a faceface with one O(3)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 5-68°.