Y(CoO2)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 8-coordinate geometry to one O(7), one O(8), two equivalent O(1), two equivalent O(10), and two equivalent O(5) atoms. In the second Y site, Y(2) is bonded in a 8-coordinate geometry to one O(11), one O(12), one O(2), one O(3), one O(4), one O(6), and two equivalent O(9) atoms. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded in a rectangular see-saw-like geometry to one O(4), one O(5), one O(7), and one O(8) atom. In the second Co site, Co(2) is bonded in a square co-planar geometry to two equivalent O(6) and two equivalent O(9) atoms. In the third Co site, Co(3) is bonded in a rectangular see-saw-like geometry to one O(1), one O(10), one O(11), and one O(2) atom. In the fourth Co site, Co(4) is bonded in a 6-coordinate geometry to two equivalent O(12), two equivalent O(3), and two equivalent O(6) atoms. In the fifth Co site, Co(5) is bonded in a rectangular see-saw-like geometry to one O(11), one O(12), one O(4), and one O(6) atom. In the sixth Co site, Co(6) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(7) atoms to form distorted corner-sharing CoO6 octahedra. In the seventh Co site, Co(7) is bonded to one O(1), one O(11), one O(2), one O(7), and one O(8) atom to form distorted corner-sharing CoO5 square pyramids. The corner-sharing octahedral tilt angles are 82°. In the eighth Co site, Co(8) is bonded in a distorted square co-planar geometry to two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1), one Co(3), and one Co(7) atom to form distorted OY2Co2 tetrahedra that share corners with four equivalent O(5)Y2Co2 tetrahedra,  a cornercorner with one O(7)YCo3 trigonal pyramid, corners with three equivalent O(10)Y2Co2 trigonal pyramids,  an edgeedge with one O(1)Y2Co2 tetrahedra,  an edgeedge with one O(10)Y2Co2 trigonal pyramid, and  an edgeedge with one O(7)YCo3 trigonal pyramid. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Y(2), one Co(3), and one Co(7) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Y(2), one Co(4), and one Co(8) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Y(2), one Co(1), and one Co(5) atom. In the fifth O site, O(5) is bonded to two equivalent Y(1), one Co(1), and one Co(6) atom to form OY2Co2 tetrahedra that share  a cornercorner with one O(5)Y2Co2 tetrahedra, corners with four equivalent O(1)Y2Co2 tetrahedra, corners with three equivalent O(7)YCo3 trigonal pyramids, corners with four equivalent O(10)Y2Co2 trigonal pyramids,  an edgeedge with one O(5)Y2Co2 tetrahedra,  an edgeedge with one O(10)Y2Co2 trigonal pyramid, and  an edgeedge with one O(7)YCo3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Y(2), one Co(2), one Co(4), and one Co(5) atom to form distorted OYCo3 trigonal pyramids that share corners with two equivalent O(9)Y2Co2 tetrahedra, corners with two equivalent O(6)YCo3 trigonal pyramids, and  an edgeedge with one O(9)Y2Co2 tetrahedra. In the seventh O site, O(7) is bonded to one Y(1), one Co(1), one Co(6), and one Co(7) atom to form OYCo3 trigonal pyramids that share  a cornercorner with one O(1)Y2Co2 tetrahedra, corners with three equivalent O(5)Y2Co2 tetrahedra,  a cornercorner with one O(7)YCo3 trigonal pyramid, corners with two equivalent O(10)Y2Co2 trigonal pyramids,  an edgeedge with one O(1)Y2Co2 tetrahedra,  an edgeedge with one O(5)Y2Co2 tetrahedra, and  an edgeedge with one O(10)Y2Co2 trigonal pyramid. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Y(1), one Co(1), and one Co(7) atom. In the ninth O site, O(9) is bonded to two equivalent Y(2), one Co(2), and one Co(8) atom to form distorted OY2Co2 tetrahedra that share corners with two equivalent O(9)Y2Co2 tetrahedra, corners with two equivalent O(6)YCo3 trigonal pyramids,  an edgeedge with one O(9)Y2Co2 tetrahedra, and  an edgeedge with one O(6)YCo3 trigonal pyramid. In the tenth O site, O(10) is bonded to two equivalent Y(1), one Co(3), and one Co(6) atom to form distorted OY2Co2 trigonal pyramids that share corners with three equivalent O(1)Y2Co2 tetrahedra, corners with four equivalent O(5)Y2Co2 tetrahedra,  a cornercorner with one O(10)Y2Co2 trigonal pyramid, corners with two equivalent O(7)YCo3 trigonal pyramids,  an edgeedge with one O(1)Y2Co2 tetrahedra,  an edgeedge with one O(5)Y2Co2 tetrahedra,  an edgeedge with one O(10)Y2Co2 trigonal pyramid, and  an edgeedge with one O(7)YCo3 trigonal pyramid. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Y(2), one Co(3), one Co(5), and one Co(7) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Y(2), one Co(4), one Co(5), and one Co(8) atom.
Y(CoO2)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 8-coordinate geometry to one O(7), one O(8), two equivalent O(1), two equivalent O(10), and two equivalent O(5) atoms. The Y(1)-O(7) bond length is 2.36 Å. The Y(1)-O(8) bond length is 2.34 Å. There is one shorter (2.37 Å) and one longer (2.40 Å) Y(1)-O(1) bond length. There is one shorter (2.38 Å) and one longer (2.50 Å) Y(1)-O(10) bond length. There is one shorter (2.29 Å) and one longer (2.43 Å) Y(1)-O(5) bond length. In the second Y site, Y(2) is bonded in a 8-coordinate geometry to one O(11), one O(12), one O(2), one O(3), one O(4), one O(6), and two equivalent O(9) atoms. The Y(2)-O(11) bond length is 2.87 Å. The Y(2)-O(12) bond length is 2.34 Å. The Y(2)-O(2) bond length is 2.26 Å. The Y(2)-O(3) bond length is 2.37 Å. The Y(2)-O(4) bond length is 2.45 Å. The Y(2)-O(6) bond length is 2.36 Å. There is one shorter (2.39 Å) and one longer (2.44 Å) Y(2)-O(9) bond length. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded in a rectangular see-saw-like geometry to one O(4), one O(5), one O(7), and one O(8) atom. The Co(1)-O(4) bond length is 1.82 Å. The Co(1)-O(5) bond length is 1.86 Å. The Co(1)-O(7) bond length is 1.91 Å. The Co(1)-O(8) bond length is 1.87 Å. In the second Co site, Co(2) is bonded in a square co-planar geometry to two equivalent O(6) and two equivalent O(9) atoms. Both Co(2)-O(6) bond lengths are 1.82 Å. Both Co(2)-O(9) bond lengths are 1.88 Å. In the third Co site, Co(3) is bonded in a rectangular see-saw-like geometry to one O(1), one O(10), one O(11), and one O(2) atom. The Co(3)-O(1) bond length is 1.82 Å. The Co(3)-O(10) bond length is 1.87 Å. The Co(3)-O(11) bond length is 1.88 Å. The Co(3)-O(2) bond length is 1.81 Å. In the fourth Co site, Co(4) is bonded in a 6-coordinate geometry to two equivalent O(12), two equivalent O(3), and two equivalent O(6) atoms. Both Co(4)-O(12) bond lengths are 1.91 Å. Both Co(4)-O(3) bond lengths are 1.88 Å. Both Co(4)-O(6) bond lengths are 2.37 Å. In the fifth Co site, Co(5) is bonded in a rectangular see-saw-like geometry to one O(11), one O(12), one O(4), and one O(6) atom. The Co(5)-O(11) bond length is 1.89 Å. The Co(5)-O(12) bond length is 1.78 Å. The Co(5)-O(4) bond length is 1.84 Å. The Co(5)-O(6) bond length is 1.90 Å. In the sixth Co site, Co(6) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(7) atoms to form distorted corner-sharing CoO6 octahedra. Both Co(6)-O(10) bond lengths are 1.93 Å. Both Co(6)-O(5) bond lengths are 2.01 Å. Both Co(6)-O(7) bond lengths are 2.24 Å. In the seventh Co site, Co(7) is bonded to one O(1), one O(11), one O(2), one O(7), and one O(8) atom to form distorted corner-sharing CoO5 square pyramids. The corner-sharing octahedral tilt angles are 82°. The Co(7)-O(1) bond length is 2.06 Å. The Co(7)-O(11) bond length is 2.06 Å. The Co(7)-O(2) bond length is 2.00 Å. The Co(7)-O(7) bond length is 1.91 Å. The Co(7)-O(8) bond length is 1.86 Å. In the eighth Co site, Co(8) is bonded in a distorted square co-planar geometry to two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms. Both Co(8)-O(12) bond lengths are 2.59 Å. Both Co(8)-O(3) bond lengths are 1.87 Å. Both Co(8)-O(9) bond lengths are 1.91 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1), one Co(3), and one Co(7) atom to form distorted OY2Co2 tetrahedra that share corners with four equivalent O(5)Y2Co2 tetrahedra,  a cornercorner with one O(7)YCo3 trigonal pyramid, corners with three equivalent O(10)Y2Co2 trigonal pyramids,  an edgeedge with one O(1)Y2Co2 tetrahedra,  an edgeedge with one O(10)Y2Co2 trigonal pyramid, and  an edgeedge with one O(7)YCo3 trigonal pyramid. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Y(2), one Co(3), and one Co(7) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Y(2), one Co(4), and one Co(8) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Y(2), one Co(1), and one Co(5) atom. In the fifth O site, O(5) is bonded to two equivalent Y(1), one Co(1), and one Co(6) atom to form OY2Co2 tetrahedra that share  a cornercorner with one O(5)Y2Co2 tetrahedra, corners with four equivalent O(1)Y2Co2 tetrahedra, corners with three equivalent O(7)YCo3 trigonal pyramids, corners with four equivalent O(10)Y2Co2 trigonal pyramids,  an edgeedge with one O(5)Y2Co2 tetrahedra,  an edgeedge with one O(10)Y2Co2 trigonal pyramid, and  an edgeedge with one O(7)YCo3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Y(2), one Co(2), one Co(4), and one Co(5) atom to form distorted OYCo3 trigonal pyramids that share corners with two equivalent O(9)Y2Co2 tetrahedra, corners with two equivalent O(6)YCo3 trigonal pyramids, and  an edgeedge with one O(9)Y2Co2 tetrahedra. In the seventh O site, O(7) is bonded to one Y(1), one Co(1), one Co(6), and one Co(7) atom to form OYCo3 trigonal pyramids that share  a cornercorner with one O(1)Y2Co2 tetrahedra, corners with three equivalent O(5)Y2Co2 tetrahedra,  a cornercorner with one O(7)YCo3 trigonal pyramid, corners with two equivalent O(10)Y2Co2 trigonal pyramids,  an edgeedge with one O(1)Y2Co2 tetrahedra,  an edgeedge with one O(5)Y2Co2 tetrahedra, and  an edgeedge with one O(10)Y2Co2 trigonal pyramid. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Y(1), one Co(1), and one Co(7) atom. In the ninth O site, O(9) is bonded to two equivalent Y(2), one Co(2), and one Co(8) atom to form distorted OY2Co2 tetrahedra that share corners with two equivalent O(9)Y2Co2 tetrahedra, corners with two equivalent O(6)YCo3 trigonal pyramids,  an edgeedge with one O(9)Y2Co2 tetrahedra, and  an edgeedge with one O(6)YCo3 trigonal pyramid. In the tenth O site, O(10) is bonded to two equivalent Y(1), one Co(3), and one Co(6) atom to form distorted OY2Co2 trigonal pyramids that share corners with three equivalent O(1)Y2Co2 tetrahedra, corners with four equivalent O(5)Y2Co2 tetrahedra,  a cornercorner with one O(10)Y2Co2 trigonal pyramid, corners with two equivalent O(7)YCo3 trigonal pyramids,  an edgeedge with one O(1)Y2Co2 tetrahedra,  an edgeedge with one O(5)Y2Co2 tetrahedra,  an edgeedge with one O(10)Y2Co2 trigonal pyramid, and  an edgeedge with one O(7)YCo3 trigonal pyramid. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Y(2), one Co(3), one Co(5), and one Co(7) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Y(2), one Co(4), one Co(5), and one Co(8) atom.