Sr2MnMoO6 crystallizes in the triclinic P-1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. In the third Sr site, Sr(3) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to two equivalent O(1), two equivalent O(11), and two equivalent O(4) atoms to form MoO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. In the second Mo site, Mo(2) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms to form MoO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. In the third Mo site, Mo(3) is bonded to two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms to form MoO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-16°. In the fourth Mo site, Mo(4) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(7) atoms to form MoO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(12), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra, corners with two equivalent Mo(2)O6 octahedra, corners with two equivalent Mo(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-16°. In the second Mn site, Mn(2) is bonded to two equivalent O(6), two equivalent O(7), and two equivalent O(9) atoms to form MnO6 octahedra that share corners with two equivalent Mo(2)O6 octahedra, corners with two equivalent Mo(3)O6 octahedra, corners with two equivalent Mo(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. In the third Mn site, Mn(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(8) atoms to form MnO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra, corners with two equivalent Mo(2)O6 octahedra, corners with two equivalent Mo(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. In the fourth Mn site, Mn(4) is bonded to two equivalent O(10), two equivalent O(11), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra, corners with two equivalent Mo(3)O6 octahedra, corners with two equivalent Mo(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(1), and one Mn(3) atom. In the second O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(4), and one Mn(3) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(1), and one Mn(1) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(2), and one Mn(1) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(2), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(4), and one Mn(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(2), and one Mn(3) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(3), and one Mn(2) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(4), and one Mn(4) atom. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(1), and one Mn(4) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(3), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°.
Sr2MnMoO6 crystallizes in the triclinic P-1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. The Sr(1)-O(1) bond length is 2.65 Å. The Sr(1)-O(10) bond length is 3.01 Å. The Sr(1)-O(11) bond length is 2.70 Å. The Sr(1)-O(12) bond length is 2.69 Å. The Sr(1)-O(2) bond length is 2.71 Å. The Sr(1)-O(3) bond length is 2.66 Å. The Sr(1)-O(4) bond length is 3.02 Å. The Sr(1)-O(5) bond length is 2.66 Å. The Sr(1)-O(6) bond length is 2.70 Å. The Sr(1)-O(7) bond length is 2.65 Å. The Sr(1)-O(8) bond length is 3.01 Å. The Sr(1)-O(9) bond length is 3.02 Å. In the second Sr site, Sr(2) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. The Sr(2)-O(1) bond length is 2.99 Å. The Sr(2)-O(10) bond length is 2.64 Å. The Sr(2)-O(11) bond length is 2.71 Å. The Sr(2)-O(12) bond length is 2.72 Å. The Sr(2)-O(2) bond length is 2.72 Å. The Sr(2)-O(3) bond length is 3.03 Å. The Sr(2)-O(4) bond length is 2.65 Å. The Sr(2)-O(5) bond length is 2.98 Å. The Sr(2)-O(6) bond length is 2.73 Å. The Sr(2)-O(7) bond length is 3.02 Å. The Sr(2)-O(8) bond length is 2.64 Å. The Sr(2)-O(9) bond length is 2.64 Å. In the third Sr site, Sr(3) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. The Sr(3)-O(1) bond length is 2.63 Å. The Sr(3)-O(10) bond length is 3.00 Å. The Sr(3)-O(11) bond length is 2.74 Å. The Sr(3)-O(12) bond length is 2.75 Å. The Sr(3)-O(2) bond length is 2.73 Å. The Sr(3)-O(3) bond length is 2.63 Å. The Sr(3)-O(4) bond length is 2.99 Å. The Sr(3)-O(5) bond length is 2.63 Å. The Sr(3)-O(6) bond length is 2.74 Å. The Sr(3)-O(7) bond length is 2.63 Å. The Sr(3)-O(8) bond length is 3.00 Å. The Sr(3)-O(9) bond length is 2.99 Å. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra,  a faceface with one Mo(1)O6 octahedra,  a faceface with one Mo(2)O6 octahedra,  a faceface with one Mo(3)O6 octahedra,  a faceface with one Mo(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, and  a faceface with one Mn(4)O6 octahedra. The Sr(4)-O(1) bond length is 3.02 Å. The Sr(4)-O(10) bond length is 2.64 Å. The Sr(4)-O(11) bond length is 2.73 Å. The Sr(4)-O(12) bond length is 2.72 Å. The Sr(4)-O(2) bond length is 2.72 Å. The Sr(4)-O(3) bond length is 2.98 Å. The Sr(4)-O(4) bond length is 2.64 Å. The Sr(4)-O(5) bond length is 3.03 Å. The Sr(4)-O(6) bond length is 2.72 Å. The Sr(4)-O(7) bond length is 2.99 Å. The Sr(4)-O(8) bond length is 2.64 Å. The Sr(4)-O(9) bond length is 2.65 Å. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to two equivalent O(1), two equivalent O(11), and two equivalent O(4) atoms to form MoO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. Both Mo(1)-O(1) bond lengths are 1.95 Å. Both Mo(1)-O(11) bond lengths are 1.94 Å. Both Mo(1)-O(4) bond lengths are 1.95 Å. In the second Mo site, Mo(2) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms to form MoO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. Both Mo(2)-O(5) bond lengths are 1.95 Å. Both Mo(2)-O(6) bond lengths are 1.94 Å. Both Mo(2)-O(8) bond lengths are 1.95 Å. In the third Mo site, Mo(3) is bonded to two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms to form MoO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-16°. Both Mo(3)-O(12) bond lengths are 1.94 Å. Both Mo(3)-O(3) bond lengths are 1.95 Å. Both Mo(3)-O(9) bond lengths are 1.95 Å. In the fourth Mo site, Mo(4) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(7) atoms to form MoO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. Both Mo(4)-O(10) bond lengths are 1.95 Å. Both Mo(4)-O(2) bond lengths are 1.94 Å. Both Mo(4)-O(7) bond lengths are 1.95 Å. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(12), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra, corners with two equivalent Mo(2)O6 octahedra, corners with two equivalent Mo(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-16°. Both Mn(1)-O(12) bond lengths are 2.18 Å. Both Mn(1)-O(4) bond lengths are 1.93 Å. Both Mn(1)-O(5) bond lengths are 1.93 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(6), two equivalent O(7), and two equivalent O(9) atoms to form MnO6 octahedra that share corners with two equivalent Mo(2)O6 octahedra, corners with two equivalent Mo(3)O6 octahedra, corners with two equivalent Mo(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. Both Mn(2)-O(6) bond lengths are 2.18 Å. Both Mn(2)-O(7) bond lengths are 1.93 Å. Both Mn(2)-O(9) bond lengths are 1.93 Å. In the third Mn site, Mn(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(8) atoms to form MnO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra, corners with two equivalent Mo(2)O6 octahedra, corners with two equivalent Mo(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. Both Mn(3)-O(1) bond lengths are 1.93 Å. Both Mn(3)-O(2) bond lengths are 2.18 Å. Both Mn(3)-O(8) bond lengths are 1.93 Å. In the fourth Mn site, Mn(4) is bonded to two equivalent O(10), two equivalent O(11), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra, corners with two equivalent Mo(3)O6 octahedra, corners with two equivalent Mo(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-16°. Both Mn(4)-O(10) bond lengths are 1.93 Å. Both Mn(4)-O(11) bond lengths are 2.18 Å. Both Mn(4)-O(3) bond lengths are 1.93 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(1), and one Mn(3) atom. In the second O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(4), and one Mn(3) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(1), and one Mn(1) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(2), and one Mn(1) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(2), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(4), and one Mn(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(2), and one Mn(3) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(3), and one Mn(2) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(4), and one Mn(4) atom. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(1), and one Mn(4) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mo(3), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing OSr4MnMo octahedra. The corner-sharing octahedral tilt angles range from 0-5°.