Sr3NdMn2O8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. Nd(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), and four equivalent O(5) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), and four equivalent O(5) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), and one Mn(2) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(4)Sr3Nd2Mn octahedra, corners with four equivalent O(1)Sr5Mn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(3)Sr3Nd2Mn octahedra, edges with two equivalent O(4)Sr3Nd2Mn octahedra, edges with four equivalent O(2)Sr4NdMn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the second O site, O(2) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Nd(1), and one Mn(1) atom to form distorted OSr4NdMn octahedra that share  a cornercorner with one O(3)Sr3Nd2Mn octahedra, corners with four equivalent O(2)Sr4NdMn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(3)Sr3Nd2Mn octahedra, edges with two equivalent O(4)Sr3Nd2Mn octahedra, edges with four equivalent O(1)Sr5Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Nd(1), and one Mn(1) atom to form distorted OSr3Nd2Mn octahedra that share  a cornercorner with one O(2)Sr4NdMn octahedra, corners with four equivalent O(3)Sr3Nd2Mn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(2)Sr4NdMn octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(4)Sr3Nd2Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the fourth O site, O(4) is bonded to one Sr(2), two equivalent Sr(1), two equivalent Nd(1), and one Mn(2) atom to form distorted OSr3Nd2Mn octahedra that share  a cornercorner with one O(1)Sr5Mn octahedra, corners with four equivalent O(4)Sr3Nd2Mn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(2)Sr4NdMn octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(3)Sr3Nd2Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one Nd(1), one Mn(1), and one Mn(2) atom to form distorted OSr3NdMn2 octahedra that share corners with two equivalent O(5)Sr3NdMn2 octahedra, corners with three equivalent O(3)Sr3Nd2Mn octahedra, corners with three equivalent O(4)Sr3Nd2Mn octahedra, corners with three equivalent O(2)Sr4NdMn octahedra, corners with three equivalent O(1)Sr5Mn octahedra, edges with two equivalent O(5)Sr3NdMn2 octahedra,  a faceface with one O(3)Sr3Nd2Mn octahedra,  a faceface with one O(4)Sr3Nd2Mn octahedra,  a faceface with one O(2)Sr4NdMn octahedra,  a faceface with one O(1)Sr5Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 4-57°.
Sr3NdMn2O8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. The Sr(1)-O(1) bond length is 2.45 Å. Both Sr(1)-O(3) bond lengths are 2.78 Å. Both Sr(1)-O(4) bond lengths are 2.77 Å. All Sr(1)-O(5) bond lengths are 2.65 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. The Sr(2)-O(4) bond length is 2.44 Å. Both Sr(2)-O(1) bond lengths are 2.77 Å. Both Sr(2)-O(2) bond lengths are 2.79 Å. All Sr(2)-O(5) bond lengths are 2.70 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. The Sr(3)-O(3) bond length is 2.43 Å. Both Sr(3)-O(1) bond lengths are 2.78 Å. Both Sr(3)-O(2) bond lengths are 2.79 Å. All Sr(3)-O(5) bond lengths are 2.65 Å. Nd(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. The Nd(1)-O(2) bond length is 2.39 Å. Both Nd(1)-O(3) bond lengths are 2.78 Å. Both Nd(1)-O(4) bond lengths are 2.79 Å. All Nd(1)-O(5) bond lengths are 2.52 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), and four equivalent O(5) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Mn(1)-O(2) bond length is 2.09 Å. The Mn(1)-O(3) bond length is 1.98 Å. All Mn(1)-O(5) bond lengths are 1.94 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), and four equivalent O(5) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 5°. The Mn(2)-O(1) bond length is 1.94 Å. The Mn(2)-O(4) bond length is 2.00 Å. All Mn(2)-O(5) bond lengths are 1.98 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), and one Mn(2) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(4)Sr3Nd2Mn octahedra, corners with four equivalent O(1)Sr5Mn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(3)Sr3Nd2Mn octahedra, edges with two equivalent O(4)Sr3Nd2Mn octahedra, edges with four equivalent O(2)Sr4NdMn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the second O site, O(2) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Nd(1), and one Mn(1) atom to form distorted OSr4NdMn octahedra that share  a cornercorner with one O(3)Sr3Nd2Mn octahedra, corners with four equivalent O(2)Sr4NdMn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(3)Sr3Nd2Mn octahedra, edges with two equivalent O(4)Sr3Nd2Mn octahedra, edges with four equivalent O(1)Sr5Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Nd(1), and one Mn(1) atom to form distorted OSr3Nd2Mn octahedra that share  a cornercorner with one O(2)Sr4NdMn octahedra, corners with four equivalent O(3)Sr3Nd2Mn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(2)Sr4NdMn octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(4)Sr3Nd2Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the fourth O site, O(4) is bonded to one Sr(2), two equivalent Sr(1), two equivalent Nd(1), and one Mn(2) atom to form distorted OSr3Nd2Mn octahedra that share  a cornercorner with one O(1)Sr5Mn octahedra, corners with four equivalent O(4)Sr3Nd2Mn octahedra, corners with twelve equivalent O(5)Sr3NdMn2 octahedra, edges with two equivalent O(2)Sr4NdMn octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(3)Sr3Nd2Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one Nd(1), one Mn(1), and one Mn(2) atom to form distorted OSr3NdMn2 octahedra that share corners with two equivalent O(5)Sr3NdMn2 octahedra, corners with three equivalent O(3)Sr3Nd2Mn octahedra, corners with three equivalent O(4)Sr3Nd2Mn octahedra, corners with three equivalent O(2)Sr4NdMn octahedra, corners with three equivalent O(1)Sr5Mn octahedra, edges with two equivalent O(5)Sr3NdMn2 octahedra,  a faceface with one O(3)Sr3Nd2Mn octahedra,  a faceface with one O(4)Sr3Nd2Mn octahedra,  a faceface with one O(2)Sr4NdMn octahedra,  a faceface with one O(1)Sr5Mn octahedra, and faces with four equivalent O(5)Sr3NdMn2 octahedra. The corner-sharing octahedral tilt angles range from 4-57°.