Ba6Pr2Co4O15 crystallizes in the triclinic P1 space group. There are twelve inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(11), one O(12), one O(13), one O(14), one O(15), one O(19), one O(20), one O(21), one O(7), one O(8), and one O(9) atom to form distorted BaO12 cuboctahedra that share faces with two equivalent Co(7)O6 octahedra,  a faceface with one Co(1)O4 tetrahedra,  a faceface with one Co(2)O4 tetrahedra, and  a faceface with one Co(3)O4 tetrahedra. In the second Ba site, Ba(2) is bonded to one O(1), one O(16), one O(17), one O(18), one O(2), one O(22), one O(23), one O(24), one O(3), one O(4), one O(5), and one O(6) atom to form distorted BaO12 cuboctahedra that share faces with two equivalent Co(8)O6 octahedra,  a faceface with one Co(4)O4 tetrahedra,  a faceface with one Co(5)O4 tetrahedra, and  a faceface with one Co(6)O4 tetrahedra. In the third Ba site, Ba(3) is bonded in a 10-coordinate geometry to one O(11), one O(13), one O(20), one O(21), one O(26), one O(27), one O(28), one O(3), one O(4), and one O(7) atom. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(14), one O(19), one O(21), one O(25), one O(27), one O(29), one O(6), and one O(8) atom. In the fifth Ba site, Ba(5) is bonded in a 10-coordinate geometry to one O(12), one O(15), one O(19), one O(2), one O(20), one O(25), one O(26), one O(30), one O(5), and one O(9) atom. In the sixth Ba site, Ba(6) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(16), one O(23), one O(24), one O(25), one O(29), one O(30), one O(5), and one O(9) atom. In the seventh Ba site, Ba(7) is bonded in a 10-coordinate geometry to one O(12), one O(17), one O(2), one O(22), one O(24), one O(26), one O(28), one O(30), one O(4), and one O(7) atom. In the eighth Ba site, Ba(8) is bonded in a 10-coordinate geometry to one O(11), one O(18), one O(22), one O(23), one O(27), one O(28), one O(29), one O(3), one O(6), and one O(8) atom. In the ninth Ba site, Ba(9) is bonded in a 8-coordinate geometry to one O(12), one O(14), one O(15), one O(19), one O(2), one O(22), one O(6), and one O(8) atom. In the tenth Ba site, Ba(10) is bonded in a 8-coordinate geometry to one O(11), one O(16), one O(18), one O(20), one O(23), one O(3), one O(5), and one O(9) atom. In the eleventh Ba site, Ba(11) is bonded to one O(25), one O(26), one O(27), one O(28), one O(29), and one O(30) atom to form BaO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  a cornercorner with one Co(5)O4 tetrahedra,  a cornercorner with one Co(6)O4 tetrahedra, and faces with two equivalent Ba(12)O6 octahedra. In the twelfth Ba site, Ba(12) is bonded to one O(25), one O(26), one O(27), one O(28), one O(29), and one O(30) atom to form BaO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  a cornercorner with one Co(5)O4 tetrahedra,  a cornercorner with one Co(6)O4 tetrahedra, and faces with two equivalent Ba(11)O6 octahedra. There are four inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one O(11), one O(13), one O(15), one O(20), one O(23), one O(3), one O(5), and one O(9) atom. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(21), one O(24), one O(4), and one O(7) atom. In the third Pr site, Pr(3) is bonded in a 8-coordinate geometry to one O(12), one O(17), one O(18), one O(19), one O(2), one O(22), one O(6), and one O(8) atom. In the fourth Pr site, Pr(4) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(16), one O(17), one O(21), one O(24), one O(4), and one O(7) atom. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(13), one O(28), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 4-64°. In the second Co site, Co(2) is bonded to one O(10), one O(14), one O(29), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 7-66°. In the third Co site, Co(3) is bonded to one O(12), one O(15), one O(30), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 6-64°. In the fourth Co site, Co(4) is bonded to one O(1), one O(16), one O(25), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 9-68°. In the fifth Co site, Co(5) is bonded to one O(17), one O(2), one O(26), and one O(4) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 4-61°. In the sixth Co site, Co(6) is bonded to one O(18), one O(27), one O(3), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 9-67°. In the seventh Co site, Co(7) is bonded to one O(13), one O(14), one O(15), one O(19), one O(20), and one O(21) atom to form CoO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra, and faces with two equivalent Ba(1)O12 cuboctahedra. In the eighth Co site, Co(8) is bonded to one O(16), one O(17), one O(18), one O(22), one O(23), and one O(24) atom to form CoO6 octahedra that share  a cornercorner with one Co(4)O4 tetrahedra,  a cornercorner with one Co(5)O4 tetrahedra,  a cornercorner with one Co(6)O4 tetrahedra, and faces with two equivalent Ba(2)O12 cuboctahedra. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), one Ba(6), one Pr(2), one Pr(4), and one Co(4) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Ba(2), one Ba(5), one Ba(7), one Ba(9), one Pr(3), and one Co(5) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(3), one Ba(8), one Pr(1), and one Co(6) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(7), one Pr(2), one Pr(4), and one Co(5) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(5), one Ba(6), one Pr(1), and one Co(4) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), one Ba(8), one Ba(9), one Pr(3), and one Co(6) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Ba(7), one Pr(2), one Pr(4), and one Co(1) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(4), one Ba(8), one Ba(9), one Pr(3), and one Co(2) atom. In the ninth O site, O(9) is bonded in a 1-coordinate geometry to one Ba(1), one Ba(10), one Ba(5), one Ba(6), one Pr(1), and one Co(3) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(4), one Ba(6), one Pr(2), one Pr(4), and one Co(2) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(10), one Ba(3), one Ba(8), one Pr(1), and one Co(1) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(5), one Ba(7), one Ba(9), one Pr(3), and one Co(3) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Pr(1), one Pr(2), one Co(1), and one Co(7) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(4), one Ba(9), one Pr(2), one Co(2), and one Co(7) atom. In the fifteenth O site, O(15) is bonded to one Ba(1), one Ba(5), one Ba(9), one Pr(1), one Co(3), and one Co(7) atom to form distorted OBa3PrCo2 octahedra that share  a cornercorner with one O(19)Ba4PrCo octahedra,  a cornercorner with one O(20)Ba4PrCo octahedra,  a cornercorner with one O(22)Ba4PrCo octahedra,  a cornercorner with one O(23)Ba4PrCo octahedra, corners with two equivalent O(21)Ba3Pr2Co octahedra,  a faceface with one O(19)Ba4PrCo octahedra, and  a faceface with one O(20)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 2-62°. In the sixteenth O site, O(16) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(6), one Pr(4), one Co(4), and one Co(8) atom. In the seventeenth O site, O(17) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(7), one Pr(3), one Pr(4), one Co(5), and one Co(8) atom. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(8), one Pr(3), one Co(6), and one Co(8) atom. In the nineteenth O site, O(19) is bonded to one Ba(1), one Ba(4), one Ba(5), one Ba(9), one Pr(3), and one Co(7) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(22)Ba4PrCo octahedra,  a faceface with one O(21)Ba3Pr2Co octahedra,  a faceface with one O(15)Ba3PrCo2 octahedra, and  a faceface with one O(20)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-61°. In the twentieth O site, O(20) is bonded to one Ba(1), one Ba(10), one Ba(3), one Ba(5), one Pr(1), and one Co(7) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(23)Ba4PrCo octahedra,  a faceface with one O(21)Ba3Pr2Co octahedra,  a faceface with one O(15)Ba3PrCo2 octahedra, and  a faceface with one O(19)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-62°. In the twenty-first O site, O(21) is bonded to one Ba(1), one Ba(3), one Ba(4), one Pr(2), one Pr(4), and one Co(7) atom to form distorted OBa3Pr2Co octahedra that share corners with two equivalent O(24)Ba3Pr2Co octahedra, corners with two equivalent O(15)Ba3PrCo2 octahedra,  a faceface with one O(19)Ba4PrCo octahedra, and  a faceface with one O(20)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 2-34°. In the twenty-second O site, O(22) is bonded to one Ba(2), one Ba(7), one Ba(8), one Ba(9), one Pr(3), and one Co(8) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(19)Ba4PrCo octahedra,  a faceface with one O(24)Ba3Pr2Co octahedra, and  a faceface with one O(23)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-44°. In the twenty-third O site, O(23) is bonded to one Ba(10), one Ba(2), one Ba(6), one Ba(8), one Pr(1), and one Co(8) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(20)Ba4PrCo octahedra,  a faceface with one O(24)Ba3Pr2Co octahedra, and  a faceface with one O(22)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-41°. In the twenty-fourth O site, O(24) is bonded to one Ba(2), one Ba(6), one Ba(7), one Pr(2), one Pr(4), and one Co(8) atom to form distorted OBa3Pr2Co octahedra that share corners with two equivalent O(21)Ba3Pr2Co octahedra,  a faceface with one O(22)Ba4PrCo octahedra, and  a faceface with one O(23)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles are 34°. In the twenty-fifth O site, O(25) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(12), one Ba(4), one Ba(5), one Ba(6), and one Co(4) atom. In the twenty-sixth O site, O(26) is bonded in a 1-coordinate geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(5), one Ba(7), and one Co(5) atom. In the twenty-seventh O site, O(27) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(4), one Ba(8), and one Co(6) atom. In the twenty-eighth O site, O(28) is bonded in a 1-coordinate geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(7), one Ba(8), and one Co(1) atom. In the twenty-ninth O site, O(29) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(12), one Ba(4), one Ba(6), one Ba(8), and one Co(2) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Ba(11), one Ba(12), one Ba(5), one Ba(6), one Ba(7), and one Co(3) atom.
Ba6Pr2Co4O15 crystallizes in the triclinic P1 space group. There are twelve inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(11), one O(12), one O(13), one O(14), one O(15), one O(19), one O(20), one O(21), one O(7), one O(8), and one O(9) atom to form distorted BaO12 cuboctahedra that share faces with two equivalent Co(7)O6 octahedra,  a faceface with one Co(1)O4 tetrahedra,  a faceface with one Co(2)O4 tetrahedra, and  a faceface with one Co(3)O4 tetrahedra. The Ba(1)-O(10) bond length is 3.17 Å. The Ba(1)-O(11) bond length is 3.23 Å. The Ba(1)-O(12) bond length is 3.32 Å. The Ba(1)-O(13) bond length is 3.08 Å. The Ba(1)-O(14) bond length is 3.06 Å. The Ba(1)-O(15) bond length is 3.03 Å. The Ba(1)-O(19) bond length is 2.76 Å. The Ba(1)-O(20) bond length is 2.94 Å. The Ba(1)-O(21) bond length is 2.82 Å. The Ba(1)-O(7) bond length is 3.19 Å. The Ba(1)-O(8) bond length is 3.23 Å. The Ba(1)-O(9) bond length is 3.34 Å. In the second Ba site, Ba(2) is bonded to one O(1), one O(16), one O(17), one O(18), one O(2), one O(22), one O(23), one O(24), one O(3), one O(4), one O(5), and one O(6) atom to form distorted BaO12 cuboctahedra that share faces with two equivalent Co(8)O6 octahedra,  a faceface with one Co(4)O4 tetrahedra,  a faceface with one Co(5)O4 tetrahedra, and  a faceface with one Co(6)O4 tetrahedra. The Ba(2)-O(1) bond length is 3.15 Å. The Ba(2)-O(16) bond length is 3.16 Å. The Ba(2)-O(17) bond length is 3.11 Å. The Ba(2)-O(18) bond length is 3.07 Å. The Ba(2)-O(2) bond length is 3.28 Å. The Ba(2)-O(22) bond length is 2.80 Å. The Ba(2)-O(23) bond length is 2.71 Å. The Ba(2)-O(24) bond length is 2.81 Å. The Ba(2)-O(3) bond length is 3.30 Å. The Ba(2)-O(4) bond length is 3.25 Å. The Ba(2)-O(5) bond length is 3.24 Å. The Ba(2)-O(6) bond length is 3.25 Å. In the third Ba site, Ba(3) is bonded in a 10-coordinate geometry to one O(11), one O(13), one O(20), one O(21), one O(26), one O(27), one O(28), one O(3), one O(4), and one O(7) atom. The Ba(3)-O(11) bond length is 3.18 Å. The Ba(3)-O(13) bond length is 2.73 Å. The Ba(3)-O(20) bond length is 2.86 Å. The Ba(3)-O(21) bond length is 2.87 Å. The Ba(3)-O(26) bond length is 2.98 Å. The Ba(3)-O(27) bond length is 3.24 Å. The Ba(3)-O(28) bond length is 3.36 Å. The Ba(3)-O(3) bond length is 3.00 Å. The Ba(3)-O(4) bond length is 2.83 Å. The Ba(3)-O(7) bond length is 3.17 Å. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(14), one O(19), one O(21), one O(25), one O(27), one O(29), one O(6), and one O(8) atom. The Ba(4)-O(1) bond length is 3.06 Å. The Ba(4)-O(10) bond length is 3.09 Å. The Ba(4)-O(14) bond length is 2.79 Å. The Ba(4)-O(19) bond length is 2.76 Å. The Ba(4)-O(21) bond length is 2.86 Å. The Ba(4)-O(25) bond length is 3.40 Å. The Ba(4)-O(27) bond length is 3.22 Å. The Ba(4)-O(29) bond length is 3.34 Å. The Ba(4)-O(6) bond length is 2.83 Å. The Ba(4)-O(8) bond length is 2.86 Å. In the fifth Ba site, Ba(5) is bonded in a 10-coordinate geometry to one O(12), one O(15), one O(19), one O(2), one O(20), one O(25), one O(26), one O(30), one O(5), and one O(9) atom. The Ba(5)-O(12) bond length is 2.95 Å. The Ba(5)-O(15) bond length is 2.81 Å. The Ba(5)-O(19) bond length is 2.82 Å. The Ba(5)-O(2) bond length is 2.86 Å. The Ba(5)-O(20) bond length is 2.84 Å. The Ba(5)-O(25) bond length is 3.16 Å. The Ba(5)-O(26) bond length is 3.37 Å. The Ba(5)-O(30) bond length is 3.41 Å. The Ba(5)-O(5) bond length is 3.07 Å. The Ba(5)-O(9) bond length is 3.21 Å. In the sixth Ba site, Ba(6) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(16), one O(23), one O(24), one O(25), one O(29), one O(30), one O(5), and one O(9) atom. The Ba(6)-O(1) bond length is 3.05 Å. The Ba(6)-O(10) bond length is 2.99 Å. The Ba(6)-O(16) bond length is 2.75 Å. The Ba(6)-O(23) bond length is 2.78 Å. The Ba(6)-O(24) bond length is 2.87 Å. The Ba(6)-O(25) bond length is 3.30 Å. The Ba(6)-O(29) bond length is 3.32 Å. The Ba(6)-O(30) bond length is 3.32 Å. The Ba(6)-O(5) bond length is 2.90 Å. The Ba(6)-O(9) bond length is 2.83 Å. In the seventh Ba site, Ba(7) is bonded in a 10-coordinate geometry to one O(12), one O(17), one O(2), one O(22), one O(24), one O(26), one O(28), one O(30), one O(4), and one O(7) atom. The Ba(7)-O(12) bond length is 2.92 Å. The Ba(7)-O(17) bond length is 2.75 Å. The Ba(7)-O(2) bond length is 3.20 Å. The Ba(7)-O(22) bond length is 2.85 Å. The Ba(7)-O(24) bond length is 2.83 Å. The Ba(7)-O(26) bond length is 3.45 Å. The Ba(7)-O(28) bond length is 3.03 Å. The Ba(7)-O(30) bond length is 3.15 Å. The Ba(7)-O(4) bond length is 3.20 Å. The Ba(7)-O(7) bond length is 2.89 Å. In the eighth Ba site, Ba(8) is bonded in a 10-coordinate geometry to one O(11), one O(18), one O(22), one O(23), one O(27), one O(28), one O(29), one O(3), one O(6), and one O(8) atom. The Ba(8)-O(11) bond length is 2.96 Å. The Ba(8)-O(18) bond length is 2.78 Å. The Ba(8)-O(22) bond length is 2.80 Å. The Ba(8)-O(23) bond length is 2.79 Å. The Ba(8)-O(27) bond length is 3.32 Å. The Ba(8)-O(28) bond length is 3.45 Å. The Ba(8)-O(29) bond length is 3.19 Å. The Ba(8)-O(3) bond length is 2.97 Å. The Ba(8)-O(6) bond length is 3.20 Å. The Ba(8)-O(8) bond length is 3.01 Å. In the ninth Ba site, Ba(9) is bonded in a 8-coordinate geometry to one O(12), one O(14), one O(15), one O(19), one O(2), one O(22), one O(6), and one O(8) atom. The Ba(9)-O(12) bond length is 2.86 Å. The Ba(9)-O(14) bond length is 2.71 Å. The Ba(9)-O(15) bond length is 2.71 Å. The Ba(9)-O(19) bond length is 2.81 Å. The Ba(9)-O(2) bond length is 2.61 Å. The Ba(9)-O(22) bond length is 2.66 Å. The Ba(9)-O(6) bond length is 2.59 Å. The Ba(9)-O(8) bond length is 2.80 Å. In the tenth Ba site, Ba(10) is bonded in a 8-coordinate geometry to one O(11), one O(16), one O(18), one O(20), one O(23), one O(3), one O(5), and one O(9) atom. The Ba(10)-O(11) bond length is 2.63 Å. The Ba(10)-O(16) bond length is 2.70 Å. The Ba(10)-O(18) bond length is 2.69 Å. The Ba(10)-O(20) bond length is 2.65 Å. The Ba(10)-O(23) bond length is 2.78 Å. The Ba(10)-O(3) bond length is 2.87 Å. The Ba(10)-O(5) bond length is 2.81 Å. The Ba(10)-O(9) bond length is 2.59 Å. In the eleventh Ba site, Ba(11) is bonded to one O(25), one O(26), one O(27), one O(28), one O(29), and one O(30) atom to form BaO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  a cornercorner with one Co(5)O4 tetrahedra,  a cornercorner with one Co(6)O4 tetrahedra, and faces with two equivalent Ba(12)O6 octahedra. The Ba(11)-O(25) bond length is 2.78 Å. The Ba(11)-O(26) bond length is 2.73 Å. The Ba(11)-O(27) bond length is 2.76 Å. The Ba(11)-O(28) bond length is 2.60 Å. The Ba(11)-O(29) bond length is 2.63 Å. The Ba(11)-O(30) bond length is 2.58 Å. In the twelfth Ba site, Ba(12) is bonded to one O(25), one O(26), one O(27), one O(28), one O(29), and one O(30) atom to form BaO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  a cornercorner with one Co(5)O4 tetrahedra,  a cornercorner with one Co(6)O4 tetrahedra, and faces with two equivalent Ba(11)O6 octahedra. The Ba(12)-O(25) bond length is 2.64 Å. The Ba(12)-O(26) bond length is 2.60 Å. The Ba(12)-O(27) bond length is 2.61 Å. The Ba(12)-O(28) bond length is 2.75 Å. The Ba(12)-O(29) bond length is 2.74 Å. The Ba(12)-O(30) bond length is 2.70 Å. There are four inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one O(11), one O(13), one O(15), one O(20), one O(23), one O(3), one O(5), and one O(9) atom. The Pr(1)-O(11) bond length is 2.62 Å. The Pr(1)-O(13) bond length is 2.69 Å. The Pr(1)-O(15) bond length is 2.49 Å. The Pr(1)-O(20) bond length is 2.68 Å. The Pr(1)-O(23) bond length is 2.53 Å. The Pr(1)-O(3) bond length is 2.47 Å. The Pr(1)-O(5) bond length is 2.41 Å. The Pr(1)-O(9) bond length is 2.55 Å. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(21), one O(24), one O(4), and one O(7) atom. The Pr(2)-O(1) bond length is 2.47 Å. The Pr(2)-O(10) bond length is 2.73 Å. The Pr(2)-O(13) bond length is 2.51 Å. The Pr(2)-O(14) bond length is 2.46 Å. The Pr(2)-O(21) bond length is 2.68 Å. The Pr(2)-O(24) bond length is 2.48 Å. The Pr(2)-O(4) bond length is 2.39 Å. The Pr(2)-O(7) bond length is 2.63 Å. In the third Pr site, Pr(3) is bonded in a 8-coordinate geometry to one O(12), one O(17), one O(18), one O(19), one O(2), one O(22), one O(6), and one O(8) atom. The Pr(3)-O(12) bond length is 2.45 Å. The Pr(3)-O(17) bond length is 2.61 Å. The Pr(3)-O(18) bond length is 2.47 Å. The Pr(3)-O(19) bond length is 2.57 Å. The Pr(3)-O(2) bond length is 2.62 Å. The Pr(3)-O(22) bond length is 2.71 Å. The Pr(3)-O(6) bond length is 2.56 Å. The Pr(3)-O(8) bond length is 2.44 Å. In the fourth Pr site, Pr(4) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(16), one O(17), one O(21), one O(24), one O(4), and one O(7) atom. The Pr(4)-O(1) bond length is 2.73 Å. The Pr(4)-O(10) bond length is 2.44 Å. The Pr(4)-O(16) bond length is 2.46 Å. The Pr(4)-O(17) bond length is 2.52 Å. The Pr(4)-O(21) bond length is 2.49 Å. The Pr(4)-O(24) bond length is 2.65 Å. The Pr(4)-O(4) bond length is 2.63 Å. The Pr(4)-O(7) bond length is 2.38 Å. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(13), one O(28), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 4-64°. The Co(1)-O(11) bond length is 1.81 Å. The Co(1)-O(13) bond length is 1.95 Å. The Co(1)-O(28) bond length is 1.80 Å. The Co(1)-O(7) bond length is 1.94 Å. In the second Co site, Co(2) is bonded to one O(10), one O(14), one O(29), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 7-66°. The Co(2)-O(10) bond length is 1.85 Å. The Co(2)-O(14) bond length is 1.94 Å. The Co(2)-O(29) bond length is 1.82 Å. The Co(2)-O(8) bond length is 1.93 Å. In the third Co site, Co(3) is bonded to one O(12), one O(15), one O(30), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 6-64°. The Co(3)-O(12) bond length is 1.89 Å. The Co(3)-O(15) bond length is 1.92 Å. The Co(3)-O(30) bond length is 1.83 Å. The Co(3)-O(9) bond length is 1.86 Å. In the fourth Co site, Co(4) is bonded to one O(1), one O(16), one O(25), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 9-68°. The Co(4)-O(1) bond length is 1.84 Å. The Co(4)-O(16) bond length is 1.97 Å. The Co(4)-O(25) bond length is 1.81 Å. The Co(4)-O(5) bond length is 1.93 Å. In the fifth Co site, Co(5) is bonded to one O(17), one O(2), one O(26), and one O(4) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 4-61°. The Co(5)-O(17) bond length is 1.94 Å. The Co(5)-O(2) bond length is 1.82 Å. The Co(5)-O(26) bond length is 1.81 Å. The Co(5)-O(4) bond length is 1.92 Å. In the sixth Co site, Co(6) is bonded to one O(18), one O(27), one O(3), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Ba(11)O6 octahedra,  a cornercorner with one Ba(12)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 9-67°. The Co(6)-O(18) bond length is 1.98 Å. The Co(6)-O(27) bond length is 1.81 Å. The Co(6)-O(3) bond length is 1.84 Å. The Co(6)-O(6) bond length is 1.89 Å. In the seventh Co site, Co(7) is bonded to one O(13), one O(14), one O(15), one O(19), one O(20), and one O(21) atom to form CoO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra, and faces with two equivalent Ba(1)O12 cuboctahedra. The Co(7)-O(13) bond length is 2.24 Å. The Co(7)-O(14) bond length is 2.24 Å. The Co(7)-O(15) bond length is 2.28 Å. The Co(7)-O(19) bond length is 1.97 Å. The Co(7)-O(20) bond length is 1.85 Å. The Co(7)-O(21) bond length is 1.98 Å. In the eighth Co site, Co(8) is bonded to one O(16), one O(17), one O(18), one O(22), one O(23), and one O(24) atom to form CoO6 octahedra that share  a cornercorner with one Co(4)O4 tetrahedra,  a cornercorner with one Co(5)O4 tetrahedra,  a cornercorner with one Co(6)O4 tetrahedra, and faces with two equivalent Ba(2)O12 cuboctahedra. The Co(8)-O(16) bond length is 2.09 Å. The Co(8)-O(17) bond length is 2.24 Å. The Co(8)-O(18) bond length is 2.18 Å. The Co(8)-O(22) bond length is 1.89 Å. The Co(8)-O(23) bond length is 2.03 Å. The Co(8)-O(24) bond length is 2.00 Å. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), one Ba(6), one Pr(2), one Pr(4), and one Co(4) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Ba(2), one Ba(5), one Ba(7), one Ba(9), one Pr(3), and one Co(5) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(3), one Ba(8), one Pr(1), and one Co(6) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(7), one Pr(2), one Pr(4), and one Co(5) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(5), one Ba(6), one Pr(1), and one Co(4) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), one Ba(8), one Ba(9), one Pr(3), and one Co(6) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Ba(7), one Pr(2), one Pr(4), and one Co(1) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(4), one Ba(8), one Ba(9), one Pr(3), and one Co(2) atom. In the ninth O site, O(9) is bonded in a 1-coordinate geometry to one Ba(1), one Ba(10), one Ba(5), one Ba(6), one Pr(1), and one Co(3) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(4), one Ba(6), one Pr(2), one Pr(4), and one Co(2) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(10), one Ba(3), one Ba(8), one Pr(1), and one Co(1) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(5), one Ba(7), one Ba(9), one Pr(3), and one Co(3) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Pr(1), one Pr(2), one Co(1), and one Co(7) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(4), one Ba(9), one Pr(2), one Co(2), and one Co(7) atom. In the fifteenth O site, O(15) is bonded to one Ba(1), one Ba(5), one Ba(9), one Pr(1), one Co(3), and one Co(7) atom to form distorted OBa3PrCo2 octahedra that share  a cornercorner with one O(19)Ba4PrCo octahedra,  a cornercorner with one O(20)Ba4PrCo octahedra,  a cornercorner with one O(22)Ba4PrCo octahedra,  a cornercorner with one O(23)Ba4PrCo octahedra, corners with two equivalent O(21)Ba3Pr2Co octahedra,  a faceface with one O(19)Ba4PrCo octahedra, and  a faceface with one O(20)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 2-62°. In the sixteenth O site, O(16) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(6), one Pr(4), one Co(4), and one Co(8) atom. In the seventeenth O site, O(17) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(7), one Pr(3), one Pr(4), one Co(5), and one Co(8) atom. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(2), one Ba(8), one Pr(3), one Co(6), and one Co(8) atom. In the nineteenth O site, O(19) is bonded to one Ba(1), one Ba(4), one Ba(5), one Ba(9), one Pr(3), and one Co(7) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(22)Ba4PrCo octahedra,  a faceface with one O(21)Ba3Pr2Co octahedra,  a faceface with one O(15)Ba3PrCo2 octahedra, and  a faceface with one O(20)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-61°. In the twentieth O site, O(20) is bonded to one Ba(1), one Ba(10), one Ba(3), one Ba(5), one Pr(1), and one Co(7) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(23)Ba4PrCo octahedra,  a faceface with one O(21)Ba3Pr2Co octahedra,  a faceface with one O(15)Ba3PrCo2 octahedra, and  a faceface with one O(19)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-62°. In the twenty-first O site, O(21) is bonded to one Ba(1), one Ba(3), one Ba(4), one Pr(2), one Pr(4), and one Co(7) atom to form distorted OBa3Pr2Co octahedra that share corners with two equivalent O(24)Ba3Pr2Co octahedra, corners with two equivalent O(15)Ba3PrCo2 octahedra,  a faceface with one O(19)Ba4PrCo octahedra, and  a faceface with one O(20)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 2-34°. In the twenty-second O site, O(22) is bonded to one Ba(2), one Ba(7), one Ba(8), one Ba(9), one Pr(3), and one Co(8) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(19)Ba4PrCo octahedra,  a faceface with one O(24)Ba3Pr2Co octahedra, and  a faceface with one O(23)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-44°. In the twenty-third O site, O(23) is bonded to one Ba(10), one Ba(2), one Ba(6), one Ba(8), one Pr(1), and one Co(8) atom to form distorted OBa4PrCo octahedra that share  a cornercorner with one O(15)Ba3PrCo2 octahedra, corners with two equivalent O(20)Ba4PrCo octahedra,  a faceface with one O(24)Ba3Pr2Co octahedra, and  a faceface with one O(22)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles range from 34-41°. In the twenty-fourth O site, O(24) is bonded to one Ba(2), one Ba(6), one Ba(7), one Pr(2), one Pr(4), and one Co(8) atom to form distorted OBa3Pr2Co octahedra that share corners with two equivalent O(21)Ba3Pr2Co octahedra,  a faceface with one O(22)Ba4PrCo octahedra, and  a faceface with one O(23)Ba4PrCo octahedra. The corner-sharing octahedral tilt angles are 34°. In the twenty-fifth O site, O(25) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(12), one Ba(4), one Ba(5), one Ba(6), and one Co(4) atom. In the twenty-sixth O site, O(26) is bonded in a 1-coordinate geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(5), one Ba(7), and one Co(5) atom. In the twenty-seventh O site, O(27) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(4), one Ba(8), and one Co(6) atom. In the twenty-eighth O site, O(28) is bonded in a 1-coordinate geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(7), one Ba(8), and one Co(1) atom. In the twenty-ninth O site, O(29) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(12), one Ba(4), one Ba(6), one Ba(8), and one Co(2) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Ba(11), one Ba(12), one Ba(5), one Ba(6), one Ba(7), and one Co(3) atom.