Ba3CoSb2O9 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Cm space group. There are twelve inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(11), one O(19), two equivalent O(16), two equivalent O(22), two equivalent O(4), two equivalent O(7), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(12)O12 cuboctahedra,  a cornercorner with one Ba(9)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(10)O12 cuboctahedra, corners with two equivalent Ba(11)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with two equivalent Ba(5)O12 cuboctahedra, faces with two equivalent Ba(7)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Sb(1)O6 octahedra,  a faceface with one Sb(7)O6 octahedra, faces with two equivalent Sb(2)O6 octahedra, and faces with two equivalent Sb(8)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(12), one O(20), two equivalent O(15), two equivalent O(21), two equivalent O(3), two equivalent O(7), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(10)O12 cuboctahedra,  a cornercorner with one Ba(11)O12 cuboctahedra, corners with two equivalent Ba(12)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(9)O12 cuboctahedra, corners with four equivalent Ba(1)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(6)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(2)O6 octahedra,  a faceface with one Sb(8)O6 octahedra, faces with two equivalent Sb(1)O6 octahedra, and faces with two equivalent Sb(7)O6 octahedra. In the third Ba site, Ba(3) is bonded to one O(10), one O(24), two equivalent O(1), two equivalent O(13), two equivalent O(17), two equivalent O(5), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(5)O12 cuboctahedra,  a cornercorner with one Ba(8)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Ba(6)O12 cuboctahedra, corners with two equivalent Ba(7)O12 cuboctahedra, corners with four equivalent Ba(4)O12 cuboctahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(4)O6 octahedra,  a faceface with one Sb(6)O6 octahedra, faces with two equivalent Sb(3)O6 octahedra, and faces with two equivalent Sb(5)O6 octahedra. In the fourth Ba site, Ba(4) is bonded to one O(23), one O(9), two equivalent O(14), two equivalent O(18), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(6)O12 cuboctahedra,  a cornercorner with one Ba(7)O12 cuboctahedra, corners with two equivalent Ba(4)O12 cuboctahedra, corners with two equivalent Ba(5)O12 cuboctahedra, corners with two equivalent Ba(8)O12 cuboctahedra, corners with four equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, faces with two equivalent Ba(9)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Sb(3)O6 octahedra,  a faceface with one Sb(5)O6 octahedra, faces with two equivalent Sb(4)O6 octahedra, and faces with two equivalent Sb(6)O6 octahedra. In the fifth Ba site, Ba(5) is bonded to one O(24), one O(4), two equivalent O(11), two equivalent O(14), two equivalent O(15), two equivalent O(16), and two equivalent O(7) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra, corners with two equivalent Ba(4)O12 cuboctahedra, corners with two equivalent Ba(5)O12 cuboctahedra, corners with four equivalent Ba(6)O12 cuboctahedra,  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(6)O6 octahedra,  a faceface with one Sb(8)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Sb(7)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the sixth Ba site, Ba(6) is bonded to one O(23), one O(3), two equivalent O(12), two equivalent O(13), two equivalent O(15), two equivalent O(16), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(4)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Ba(6)O12 cuboctahedra, corners with four equivalent Ba(5)O12 cuboctahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Sb(5)O6 octahedra,  a faceface with one Sb(7)O6 octahedra, faces with two equivalent Co(4)O6 octahedra, and faces with two equivalent Sb(8)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the seventh Ba site, Ba(7) is bonded to one O(4), one O(9), two equivalent O(17), two equivalent O(19), two equivalent O(21), two equivalent O(22), and two equivalent O(7) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(4)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Ba(7)O12 cuboctahedra, corners with four equivalent Ba(8)O12 cuboctahedra,  a cornercorner with one Sb(8)O6 octahedra, corners with two equivalent Sb(7)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(9)O12 cuboctahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Sb(2)O6 octahedra,  a faceface with one Sb(3)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the eighth Ba site, Ba(8) is bonded to one O(10), one O(3), two equivalent O(18), two equivalent O(20), two equivalent O(21), two equivalent O(22), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra, corners with two equivalent Ba(4)O12 cuboctahedra, corners with two equivalent Ba(8)O12 cuboctahedra, corners with four equivalent Ba(7)O12 cuboctahedra,  a cornercorner with one Sb(7)O6 octahedra, corners with two equivalent Sb(8)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Sb(1)O6 octahedra,  a faceface with one Sb(4)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the ninth Ba site, Ba(9) is bonded to one O(19), one O(2), two equivalent O(17), two equivalent O(18), two equivalent O(21), two equivalent O(5), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(9)O12 cuboctahedra, corners with four equivalent Ba(10)O12 cuboctahedra,  a cornercorner with one Sb(6)O6 octahedra, corners with two equivalent Sb(5)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, faces with two equivalent Ba(7)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Sb(1)O6 octahedra,  a faceface with one Sb(4)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the tenth Ba site, Ba(10) is bonded to one O(1), one O(20), two equivalent O(10), two equivalent O(17), two equivalent O(18), two equivalent O(22), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(10)O12 cuboctahedra, corners with four equivalent Ba(9)O12 cuboctahedra,  a cornercorner with one Sb(5)O6 octahedra, corners with two equivalent Sb(6)O6 octahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Sb(2)O6 octahedra,  a faceface with one Sb(3)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the eleventh Ba site, Ba(11) is bonded to one O(12), one O(2), two equivalent O(13), two equivalent O(14), two equivalent O(16), two equivalent O(23), and two equivalent O(5) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(11)O12 cuboctahedra, corners with four equivalent Ba(12)O12 cuboctahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, faces with two equivalent Ba(6)O12 cuboctahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(6)O6 octahedra,  a faceface with one Sb(8)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the twelfth Ba site, Ba(12) is bonded to one O(1), one O(11), two equivalent O(13), two equivalent O(14), two equivalent O(15), two equivalent O(24), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra, corners with two equivalent Ba(12)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Ba(11)O12 cuboctahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ba(5)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Sb(5)O6 octahedra,  a faceface with one Sb(7)O6 octahedra, faces with two equivalent Co(4)O6 octahedra, and faces with two equivalent Sb(6)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(19), two equivalent O(17), and two equivalent O(22) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, and faces with two equivalent Ba(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. In the second Co site, Co(2) is bonded to one O(11), one O(23), two equivalent O(14), and two equivalent O(16) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(5)O6 octahedra,  a cornercorner with one Sb(7)O6 octahedra, corners with two equivalent Sb(6)O6 octahedra, corners with two equivalent Sb(8)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, and faces with two equivalent Ba(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. In the third Co site, Co(3) is bonded to one O(20), one O(9), two equivalent O(18), and two equivalent O(21) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra, and faces with two equivalent Ba(9)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. In the fourth Co site, Co(4) is bonded to one O(12), one O(24), two equivalent O(13), and two equivalent O(15) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(6)O6 octahedra,  a cornercorner with one Sb(8)O6 octahedra, corners with two equivalent Sb(5)O6 octahedra, corners with two equivalent Sb(7)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra, and faces with two equivalent Ba(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. There are eight inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(19), one O(3), two equivalent O(21), and two equivalent O(7) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(6)O12 cuboctahedra, corners with two equivalent Ba(5)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(7)O12 cuboctahedra, and  a faceface with one Sb(7)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Sb site, Sb(2) is bonded to one O(20), one O(4), two equivalent O(22), and two equivalent O(8) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(5)O12 cuboctahedra, corners with two equivalent Ba(6)O12 cuboctahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra, and  a faceface with one Sb(8)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the third Sb site, Sb(3) is bonded to one O(1), one O(9), two equivalent O(17), and two equivalent O(5) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(12)O12 cuboctahedra, corners with two equivalent Ba(11)O12 cuboctahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ba(9)O12 cuboctahedra, and  a faceface with one Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the fourth Sb site, Sb(4) is bonded to one O(10), one O(2), two equivalent O(18), and two equivalent O(6) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(11)O12 cuboctahedra, corners with two equivalent Ba(12)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, and  a faceface with one Sb(6)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the fifth Sb site, Sb(5) is bonded to one O(1), one O(23), two equivalent O(13), and two equivalent O(5) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(10)O12 cuboctahedra, corners with two equivalent Ba(9)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, and  a faceface with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the sixth Sb site, Sb(6) is bonded to one O(2), one O(24), two equivalent O(14), and two equivalent O(6) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(9)O12 cuboctahedra, corners with two equivalent Ba(10)O12 cuboctahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, and  a faceface with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the seventh Sb site, Sb(7) is bonded to one O(11), one O(3), two equivalent O(15), and two equivalent O(7) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(8)O12 cuboctahedra, corners with two equivalent Ba(7)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(5)O12 cuboctahedra, and  a faceface with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the eighth Sb site, Sb(8) is bonded to one O(12), one O(4), two equivalent O(16), and two equivalent O(8) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(7)O12 cuboctahedra, corners with two equivalent Ba(8)O12 cuboctahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(6)O12 cuboctahedra, and  a faceface with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Ba(10), one Ba(12), two equivalent Ba(3), one Sb(3), and one Sb(5) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the second O site, O(2) is bonded to one Ba(11), one Ba(9), two equivalent Ba(4), one Sb(4), and one Sb(6) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the third O site, O(3) is bonded to one Ba(6), one Ba(8), two equivalent Ba(2), one Sb(1), and one Sb(7) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the fourth O site, O(4) is bonded to one Ba(5), one Ba(7), two equivalent Ba(1), one Sb(2), and one Sb(8) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the fifth O site, O(5) is bonded to one Ba(11), one Ba(3), one Ba(4), one Ba(9), one Sb(3), and one Sb(5) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the sixth O site, O(6) is bonded to one Ba(10), one Ba(12), one Ba(3), one Ba(4), one Sb(4), and one Sb(6) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the seventh O site, O(7) is bonded to one Ba(1), one Ba(2), one Ba(5), one Ba(7), one Sb(1), and one Sb(7) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the eighth O site, O(8) is bonded to one Ba(1), one Ba(2), one Ba(6), one Ba(8), one Sb(2), and one Sb(8) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Ba(4), one Ba(7), two equivalent Ba(9), one Co(3), and one Sb(3) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to one Ba(3), one Ba(8), two equivalent Ba(10), one Co(1), and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(1), one Ba(12), two equivalent Ba(5), one Co(2), and one Sb(7) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(11), one Ba(2), two equivalent Ba(6), one Co(4), and one Sb(8) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(6), one Co(4), and one Sb(5) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(11), one Ba(12), one Ba(4), one Ba(5), one Co(2), and one Sb(6) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Ba(12), one Ba(2), one Ba(5), one Ba(6), one Co(4), and one Sb(7) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Ba(1), one Ba(11), one Ba(5), one Ba(6), one Co(2), and one Sb(8) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Ba(10), one Ba(3), one Ba(7), one Ba(9), one Co(1), and one Sb(3) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to one Ba(10), one Ba(4), one Ba(8), one Ba(9), one Co(3), and one Sb(4) atom. In the nineteenth O site, O(19) is bonded in a distorted linear geometry to one Ba(1), one Ba(9), two equivalent Ba(7), one Co(1), and one Sb(1) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to one Ba(10), one Ba(2), two equivalent Ba(8), one Co(3), and one Sb(2) atom. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to one Ba(2), one Ba(7), one Ba(8), one Ba(9), one Co(3), and one Sb(1) atom. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Ba(1), one Ba(10), one Ba(7), one Ba(8), one Co(1), and one Sb(2) atom. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Ba(4), one Ba(6), two equivalent Ba(11), one Co(2), and one Sb(5) atom. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Ba(3), one Ba(5), two equivalent Ba(12), one Co(4), and one Sb(6) atom.
Ba3CoSb2O9 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Cm space group. There are twelve inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(11), one O(19), two equivalent O(16), two equivalent O(22), two equivalent O(4), two equivalent O(7), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(12)O12 cuboctahedra,  a cornercorner with one Ba(9)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(10)O12 cuboctahedra, corners with two equivalent Ba(11)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with two equivalent Ba(5)O12 cuboctahedra, faces with two equivalent Ba(7)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Sb(1)O6 octahedra,  a faceface with one Sb(7)O6 octahedra, faces with two equivalent Sb(2)O6 octahedra, and faces with two equivalent Sb(8)O6 octahedra. The Ba(1)-O(11) bond length is 3.00 Å. The Ba(1)-O(19) bond length is 2.99 Å. Both Ba(1)-O(16) bond lengths are 3.00 Å. Both Ba(1)-O(22) bond lengths are 2.99 Å. Both Ba(1)-O(4) bond lengths are 2.98 Å. Both Ba(1)-O(7) bond lengths are 2.98 Å. Both Ba(1)-O(8) bond lengths are 2.98 Å. In the second Ba site, Ba(2) is bonded to one O(12), one O(20), two equivalent O(15), two equivalent O(21), two equivalent O(3), two equivalent O(7), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(10)O12 cuboctahedra,  a cornercorner with one Ba(11)O12 cuboctahedra, corners with two equivalent Ba(12)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(9)O12 cuboctahedra, corners with four equivalent Ba(1)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(6)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(2)O6 octahedra,  a faceface with one Sb(8)O6 octahedra, faces with two equivalent Sb(1)O6 octahedra, and faces with two equivalent Sb(7)O6 octahedra. The Ba(2)-O(12) bond length is 3.01 Å. The Ba(2)-O(20) bond length is 2.99 Å. Both Ba(2)-O(15) bond lengths are 3.00 Å. Both Ba(2)-O(21) bond lengths are 2.99 Å. Both Ba(2)-O(3) bond lengths are 2.98 Å. Both Ba(2)-O(7) bond lengths are 2.98 Å. Both Ba(2)-O(8) bond lengths are 2.98 Å. In the third Ba site, Ba(3) is bonded to one O(10), one O(24), two equivalent O(1), two equivalent O(13), two equivalent O(17), two equivalent O(5), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(5)O12 cuboctahedra,  a cornercorner with one Ba(8)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Ba(6)O12 cuboctahedra, corners with two equivalent Ba(7)O12 cuboctahedra, corners with four equivalent Ba(4)O12 cuboctahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(4)O6 octahedra,  a faceface with one Sb(6)O6 octahedra, faces with two equivalent Sb(3)O6 octahedra, and faces with two equivalent Sb(5)O6 octahedra. The Ba(3)-O(10) bond length is 2.99 Å. The Ba(3)-O(24) bond length is 3.00 Å. Both Ba(3)-O(1) bond lengths are 2.98 Å. Both Ba(3)-O(13) bond lengths are 2.99 Å. Both Ba(3)-O(17) bond lengths are 3.00 Å. Both Ba(3)-O(5) bond lengths are 2.98 Å. Both Ba(3)-O(6) bond lengths are 2.98 Å. In the fourth Ba site, Ba(4) is bonded to one O(23), one O(9), two equivalent O(14), two equivalent O(18), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(6)O12 cuboctahedra,  a cornercorner with one Ba(7)O12 cuboctahedra, corners with two equivalent Ba(4)O12 cuboctahedra, corners with two equivalent Ba(5)O12 cuboctahedra, corners with two equivalent Ba(8)O12 cuboctahedra, corners with four equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, faces with two equivalent Ba(9)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Sb(3)O6 octahedra,  a faceface with one Sb(5)O6 octahedra, faces with two equivalent Sb(4)O6 octahedra, and faces with two equivalent Sb(6)O6 octahedra. The Ba(4)-O(23) bond length is 3.01 Å. The Ba(4)-O(9) bond length is 2.98 Å. Both Ba(4)-O(14) bond lengths are 3.01 Å. Both Ba(4)-O(18) bond lengths are 2.99 Å. Both Ba(4)-O(2) bond lengths are 2.98 Å. Both Ba(4)-O(5) bond lengths are 2.98 Å. Both Ba(4)-O(6) bond lengths are 2.98 Å. In the fifth Ba site, Ba(5) is bonded to one O(24), one O(4), two equivalent O(11), two equivalent O(14), two equivalent O(15), two equivalent O(16), and two equivalent O(7) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra, corners with two equivalent Ba(4)O12 cuboctahedra, corners with two equivalent Ba(5)O12 cuboctahedra, corners with four equivalent Ba(6)O12 cuboctahedra,  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(6)O6 octahedra,  a faceface with one Sb(8)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Sb(7)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(5)-O(24) bond length is 3.03 Å. The Ba(5)-O(4) bond length is 3.07 Å. Both Ba(5)-O(11) bond lengths are 2.97 Å. Both Ba(5)-O(14) bond lengths are 3.03 Å. Both Ba(5)-O(15) bond lengths are 2.97 Å. Both Ba(5)-O(16) bond lengths are 2.98 Å. Both Ba(5)-O(7) bond lengths are 3.05 Å. In the sixth Ba site, Ba(6) is bonded to one O(23), one O(3), two equivalent O(12), two equivalent O(13), two equivalent O(15), two equivalent O(16), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(4)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Ba(6)O12 cuboctahedra, corners with four equivalent Ba(5)O12 cuboctahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Sb(5)O6 octahedra,  a faceface with one Sb(7)O6 octahedra, faces with two equivalent Co(4)O6 octahedra, and faces with two equivalent Sb(8)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(6)-O(23) bond length is 3.04 Å. The Ba(6)-O(3) bond length is 3.06 Å. Both Ba(6)-O(12) bond lengths are 2.97 Å. Both Ba(6)-O(13) bond lengths are 3.03 Å. Both Ba(6)-O(15) bond lengths are 2.97 Å. Both Ba(6)-O(16) bond lengths are 2.98 Å. Both Ba(6)-O(8) bond lengths are 3.06 Å. In the seventh Ba site, Ba(7) is bonded to one O(4), one O(9), two equivalent O(17), two equivalent O(19), two equivalent O(21), two equivalent O(22), and two equivalent O(7) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(4)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Ba(7)O12 cuboctahedra, corners with four equivalent Ba(8)O12 cuboctahedra,  a cornercorner with one Sb(8)O6 octahedra, corners with two equivalent Sb(7)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(9)O12 cuboctahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Sb(2)O6 octahedra,  a faceface with one Sb(3)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(7)-O(4) bond length is 3.06 Å. The Ba(7)-O(9) bond length is 3.02 Å. Both Ba(7)-O(17) bond lengths are 3.03 Å. Both Ba(7)-O(19) bond lengths are 2.97 Å. Both Ba(7)-O(21) bond lengths are 2.97 Å. Both Ba(7)-O(22) bond lengths are 2.98 Å. Both Ba(7)-O(7) bond lengths are 3.07 Å. In the eighth Ba site, Ba(8) is bonded to one O(10), one O(3), two equivalent O(18), two equivalent O(20), two equivalent O(21), two equivalent O(22), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra, corners with two equivalent Ba(4)O12 cuboctahedra, corners with two equivalent Ba(8)O12 cuboctahedra, corners with four equivalent Ba(7)O12 cuboctahedra,  a cornercorner with one Sb(7)O6 octahedra, corners with two equivalent Sb(8)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Sb(1)O6 octahedra,  a faceface with one Sb(4)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(8)-O(10) bond length is 3.02 Å. The Ba(8)-O(3) bond length is 3.06 Å. Both Ba(8)-O(18) bond lengths are 3.02 Å. Both Ba(8)-O(20) bond lengths are 2.97 Å. Both Ba(8)-O(21) bond lengths are 2.97 Å. Both Ba(8)-O(22) bond lengths are 2.97 Å. Both Ba(8)-O(8) bond lengths are 3.07 Å. In the ninth Ba site, Ba(9) is bonded to one O(19), one O(2), two equivalent O(17), two equivalent O(18), two equivalent O(21), two equivalent O(5), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(9)O12 cuboctahedra, corners with four equivalent Ba(10)O12 cuboctahedra,  a cornercorner with one Sb(6)O6 octahedra, corners with two equivalent Sb(5)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, faces with two equivalent Ba(7)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Sb(1)O6 octahedra,  a faceface with one Sb(4)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(9)-O(19) bond length is 3.02 Å. The Ba(9)-O(2) bond length is 3.06 Å. Both Ba(9)-O(17) bond lengths are 2.97 Å. Both Ba(9)-O(18) bond lengths are 2.97 Å. Both Ba(9)-O(21) bond lengths are 3.02 Å. Both Ba(9)-O(5) bond lengths are 3.07 Å. Both Ba(9)-O(9) bond lengths are 2.97 Å. In the tenth Ba site, Ba(10) is bonded to one O(1), one O(20), two equivalent O(10), two equivalent O(17), two equivalent O(18), two equivalent O(22), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(10)O12 cuboctahedra, corners with four equivalent Ba(9)O12 cuboctahedra,  a cornercorner with one Sb(5)O6 octahedra, corners with two equivalent Sb(6)O6 octahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra,  a faceface with one Co(3)O6 octahedra,  a faceface with one Sb(2)O6 octahedra,  a faceface with one Sb(3)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(10)-O(1) bond length is 3.06 Å. The Ba(10)-O(20) bond length is 3.02 Å. Both Ba(10)-O(10) bond lengths are 2.97 Å. Both Ba(10)-O(17) bond lengths are 2.98 Å. Both Ba(10)-O(18) bond lengths are 2.97 Å. Both Ba(10)-O(22) bond lengths are 3.03 Å. Both Ba(10)-O(6) bond lengths are 3.07 Å. In the eleventh Ba site, Ba(11) is bonded to one O(12), one O(2), two equivalent O(13), two equivalent O(14), two equivalent O(16), two equivalent O(23), and two equivalent O(5) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(11)O12 cuboctahedra, corners with four equivalent Ba(12)O12 cuboctahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, faces with two equivalent Ba(6)O12 cuboctahedra,  a faceface with one Co(4)O6 octahedra,  a faceface with one Sb(6)O6 octahedra,  a faceface with one Sb(8)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(11)-O(12) bond length is 3.03 Å. The Ba(11)-O(2) bond length is 3.07 Å. Both Ba(11)-O(13) bond lengths are 2.97 Å. Both Ba(11)-O(14) bond lengths are 2.98 Å. Both Ba(11)-O(16) bond lengths are 3.03 Å. Both Ba(11)-O(23) bond lengths are 2.97 Å. Both Ba(11)-O(5) bond lengths are 3.06 Å. In the twelfth Ba site, Ba(12) is bonded to one O(1), one O(11), two equivalent O(13), two equivalent O(14), two equivalent O(15), two equivalent O(24), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra, corners with two equivalent Ba(12)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Ba(11)O12 cuboctahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ba(5)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Sb(5)O6 octahedra,  a faceface with one Sb(7)O6 octahedra, faces with two equivalent Co(4)O6 octahedra, and faces with two equivalent Sb(6)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. The Ba(12)-O(1) bond length is 3.06 Å. The Ba(12)-O(11) bond length is 3.04 Å. Both Ba(12)-O(13) bond lengths are 2.97 Å. Both Ba(12)-O(14) bond lengths are 2.97 Å. Both Ba(12)-O(15) bond lengths are 3.03 Å. Both Ba(12)-O(24) bond lengths are 2.97 Å. Both Ba(12)-O(6) bond lengths are 3.06 Å. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(19), two equivalent O(17), and two equivalent O(22) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, and faces with two equivalent Ba(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. The Co(1)-O(10) bond length is 2.14 Å. The Co(1)-O(19) bond length is 2.14 Å. Both Co(1)-O(17) bond lengths are 2.13 Å. Both Co(1)-O(22) bond lengths are 2.13 Å. In the second Co site, Co(2) is bonded to one O(11), one O(23), two equivalent O(14), and two equivalent O(16) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(5)O6 octahedra,  a cornercorner with one Sb(7)O6 octahedra, corners with two equivalent Sb(6)O6 octahedra, corners with two equivalent Sb(8)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, and faces with two equivalent Ba(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. The Co(2)-O(11) bond length is 2.13 Å. The Co(2)-O(23) bond length is 2.13 Å. Both Co(2)-O(14) bond lengths are 2.14 Å. Both Co(2)-O(16) bond lengths are 2.14 Å. In the third Co site, Co(3) is bonded to one O(20), one O(9), two equivalent O(18), and two equivalent O(21) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra, and faces with two equivalent Ba(9)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. The Co(3)-O(20) bond length is 2.14 Å. The Co(3)-O(9) bond length is 2.14 Å. Both Co(3)-O(18) bond lengths are 2.14 Å. Both Co(3)-O(21) bond lengths are 2.13 Å. In the fourth Co site, Co(4) is bonded to one O(12), one O(24), two equivalent O(13), and two equivalent O(15) atoms to form CoO6 octahedra that share  a cornercorner with one Sb(6)O6 octahedra,  a cornercorner with one Sb(8)O6 octahedra, corners with two equivalent Sb(5)O6 octahedra, corners with two equivalent Sb(7)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra, and faces with two equivalent Ba(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. The Co(4)-O(12) bond length is 2.13 Å. The Co(4)-O(24) bond length is 2.13 Å. Both Co(4)-O(13) bond lengths are 2.14 Å. Both Co(4)-O(15) bond lengths are 2.14 Å. There are eight inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(19), one O(3), two equivalent O(21), and two equivalent O(7) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(6)O12 cuboctahedra, corners with two equivalent Ba(5)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(7)O12 cuboctahedra, and  a faceface with one Sb(7)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(1)-O(19) bond length is 1.96 Å. The Sb(1)-O(3) bond length is 2.10 Å. Both Sb(1)-O(21) bond lengths are 1.96 Å. Both Sb(1)-O(7) bond lengths are 2.10 Å. In the second Sb site, Sb(2) is bonded to one O(20), one O(4), two equivalent O(22), and two equivalent O(8) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(5)O12 cuboctahedra, corners with two equivalent Ba(6)O12 cuboctahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(8)O12 cuboctahedra, and  a faceface with one Sb(8)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(2)-O(20) bond length is 1.96 Å. The Sb(2)-O(4) bond length is 2.10 Å. Both Sb(2)-O(22) bond lengths are 1.96 Å. Both Sb(2)-O(8) bond lengths are 2.10 Å. In the third Sb site, Sb(3) is bonded to one O(1), one O(9), two equivalent O(17), and two equivalent O(5) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(12)O12 cuboctahedra, corners with two equivalent Ba(11)O12 cuboctahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a faceface with one Ba(10)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ba(9)O12 cuboctahedra, and  a faceface with one Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(3)-O(1) bond length is 2.10 Å. The Sb(3)-O(9) bond length is 1.96 Å. Both Sb(3)-O(17) bond lengths are 1.96 Å. Both Sb(3)-O(5) bond lengths are 2.10 Å. In the fourth Sb site, Sb(4) is bonded to one O(10), one O(2), two equivalent O(18), and two equivalent O(6) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(11)O12 cuboctahedra, corners with two equivalent Ba(12)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra,  a faceface with one Ba(9)O12 cuboctahedra, faces with two equivalent Ba(10)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, and  a faceface with one Sb(6)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(4)-O(10) bond length is 1.96 Å. The Sb(4)-O(2) bond length is 2.10 Å. Both Sb(4)-O(18) bond lengths are 1.96 Å. Both Sb(4)-O(6) bond lengths are 2.10 Å. In the fifth Sb site, Sb(5) is bonded to one O(1), one O(23), two equivalent O(13), and two equivalent O(5) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(10)O12 cuboctahedra, corners with two equivalent Ba(9)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(11)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, and  a faceface with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(5)-O(1) bond length is 2.10 Å. The Sb(5)-O(23) bond length is 1.96 Å. Both Sb(5)-O(13) bond lengths are 1.96 Å. Both Sb(5)-O(5) bond lengths are 2.10 Å. In the sixth Sb site, Sb(6) is bonded to one O(2), one O(24), two equivalent O(14), and two equivalent O(6) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(9)O12 cuboctahedra, corners with two equivalent Ba(10)O12 cuboctahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(12)O12 cuboctahedra, faces with two equivalent Ba(4)O12 cuboctahedra, and  a faceface with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(6)-O(2) bond length is 2.10 Å. The Sb(6)-O(24) bond length is 1.96 Å. Both Sb(6)-O(14) bond lengths are 1.96 Å. Both Sb(6)-O(6) bond lengths are 2.10 Å. In the seventh Sb site, Sb(7) is bonded to one O(11), one O(3), two equivalent O(15), and two equivalent O(7) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(8)O12 cuboctahedra, corners with two equivalent Ba(7)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(12)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(5)O12 cuboctahedra, and  a faceface with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(7)-O(11) bond length is 1.96 Å. The Sb(7)-O(3) bond length is 2.10 Å. Both Sb(7)-O(15) bond lengths are 1.96 Å. Both Sb(7)-O(7) bond lengths are 2.10 Å. In the eighth Sb site, Sb(8) is bonded to one O(12), one O(4), two equivalent O(16), and two equivalent O(8) atoms to form SbO6 octahedra that share  a cornercorner with one Ba(7)O12 cuboctahedra, corners with two equivalent Ba(8)O12 cuboctahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a faceface with one Ba(11)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(6)O12 cuboctahedra, and  a faceface with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Sb(8)-O(12) bond length is 1.97 Å. The Sb(8)-O(4) bond length is 2.10 Å. Both Sb(8)-O(16) bond lengths are 1.96 Å. Both Sb(8)-O(8) bond lengths are 2.10 Å. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Ba(10), one Ba(12), two equivalent Ba(3), one Sb(3), and one Sb(5) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the second O site, O(2) is bonded to one Ba(11), one Ba(9), two equivalent Ba(4), one Sb(4), and one Sb(6) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the third O site, O(3) is bonded to one Ba(6), one Ba(8), two equivalent Ba(2), one Sb(1), and one Sb(7) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the fourth O site, O(4) is bonded to one Ba(5), one Ba(7), two equivalent Ba(1), one Sb(2), and one Sb(8) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the fifth O site, O(5) is bonded to one Ba(11), one Ba(3), one Ba(4), one Ba(9), one Sb(3), and one Sb(5) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the sixth O site, O(6) is bonded to one Ba(10), one Ba(12), one Ba(3), one Ba(4), one Sb(4), and one Sb(6) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the seventh O site, O(7) is bonded to one Ba(1), one Ba(2), one Ba(5), one Ba(7), one Sb(1), and one Sb(7) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the eighth O site, O(8) is bonded to one Ba(1), one Ba(2), one Ba(6), one Ba(8), one Sb(2), and one Sb(8) atom to form a mixture of distorted corner and face-sharing OBa4Sb2 octahedra. The corner-sharing octahedral tilt angles range from 7-60°. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Ba(4), one Ba(7), two equivalent Ba(9), one Co(3), and one Sb(3) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to one Ba(3), one Ba(8), two equivalent Ba(10), one Co(1), and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(1), one Ba(12), two equivalent Ba(5), one Co(2), and one Sb(7) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(11), one Ba(2), two equivalent Ba(6), one Co(4), and one Sb(8) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Ba(11), one Ba(12), one Ba(3), one Ba(6), one Co(4), and one Sb(5) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(11), one Ba(12), one Ba(4), one Ba(5), one Co(2), and one Sb(6) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Ba(12), one Ba(2), one Ba(5), one Ba(6), one Co(4), and one Sb(7) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Ba(1), one Ba(11), one Ba(5), one Ba(6), one Co(2), and one Sb(8) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Ba(10), one Ba(3), one Ba(7), one Ba(9), one Co(1), and one Sb(3) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to one Ba(10), one Ba(4), one Ba(8), one Ba(9), one Co(3), and one Sb(4) atom. In the nineteenth O site, O(19) is bonded in a distorted linear geometry to one Ba(1), one Ba(9), two equivalent Ba(7), one Co(1), and one Sb(1) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to one Ba(10), one Ba(2), two equivalent Ba(8), one Co(3), and one Sb(2) atom. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to one Ba(2), one Ba(7), one Ba(8), one Ba(9), one Co(3), and one Sb(1) atom. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Ba(1), one Ba(10), one Ba(7), one Ba(8), one Co(1), and one Sb(2) atom. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Ba(4), one Ba(6), two equivalent Ba(11), one Co(2), and one Sb(5) atom. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Ba(3), one Ba(5), two equivalent Ba(12), one Co(4), and one Sb(6) atom.