Sr2MgLa2MnO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Pmmm space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(5), two equivalent O(6), and four equivalent O(1) atoms. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedra are not tilted. La(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Mn(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedra are not tilted. There are six inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one La(1), and one Mn(1) atom to form distorted OSr4LaMn octahedra that share corners with two equivalent O(3)La4Mg2 octahedra, corners with two equivalent O(4)La4Mg2 octahedra, corners with four equivalent O(5)Sr4Mn2 octahedra, corners with four equivalent O(6)Sr4Mn2 octahedra, corners with five equivalent O(1)Sr4LaMn octahedra, edges with four equivalent O(1)Sr4LaMn octahedra, edges with four equivalent O(2)SrLa4Mg octahedra, faces with two equivalent O(5)Sr4Mn2 octahedra, and faces with two equivalent O(6)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the second O site, O(2) is bonded to one Sr(1), one Mg(1), and four equivalent La(1) atoms to form distorted OSrLa4Mg octahedra that share corners with two equivalent O(5)Sr4Mn2 octahedra, corners with two equivalent O(6)Sr4Mn2 octahedra, corners with four equivalent O(3)La4Mg2 octahedra, corners with four equivalent O(4)La4Mg2 octahedra, corners with five equivalent O(2)SrLa4Mg octahedra, edges with four equivalent O(1)Sr4LaMn octahedra, edges with four equivalent O(2)SrLa4Mg octahedra, faces with two equivalent O(3)La4Mg2 octahedra, and faces with two equivalent O(4)La4Mg2 octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the third O site, O(3) is bonded to two equivalent Mg(1) and four equivalent La(1) atoms to form distorted OLa4Mg2 octahedra that share corners with two equivalent O(3)La4Mg2 octahedra, corners with four equivalent O(1)Sr4LaMn octahedra, corners with eight equivalent O(2)SrLa4Mg octahedra, edges with two equivalent O(3)La4Mg2 octahedra, faces with four equivalent O(4)La4Mg2 octahedra, and faces with four equivalent O(2)SrLa4Mg octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded to two equivalent Mg(1) and four equivalent La(1) atoms to form distorted OLa4Mg2 octahedra that share corners with two equivalent O(4)La4Mg2 octahedra, corners with four equivalent O(1)Sr4LaMn octahedra, corners with eight equivalent O(2)SrLa4Mg octahedra, edges with two equivalent O(4)La4Mg2 octahedra, faces with four equivalent O(3)La4Mg2 octahedra, and faces with four equivalent O(2)SrLa4Mg octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fifth O site, O(5) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(5)Sr4Mn2 octahedra, corners with four equivalent O(2)SrLa4Mg octahedra, corners with eight equivalent O(1)Sr4LaMn octahedra, edges with two equivalent O(5)Sr4Mn2 octahedra, faces with four equivalent O(1)Sr4LaMn octahedra, and faces with four equivalent O(6)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the sixth O site, O(6) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(6)Sr4Mn2 octahedra, corners with four equivalent O(2)SrLa4Mg octahedra, corners with eight equivalent O(1)Sr4LaMn octahedra, edges with two equivalent O(6)Sr4Mn2 octahedra, faces with four equivalent O(1)Sr4LaMn octahedra, and faces with four equivalent O(5)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°.
Sr2MgLa2MnO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Pmmm space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(5), two equivalent O(6), and four equivalent O(1) atoms. The Sr(1)-O(2) bond length is 2.38 Å. Both Sr(1)-O(5) bond lengths are 2.62 Å. Both Sr(1)-O(6) bond lengths are 2.61 Å. All Sr(1)-O(1) bond lengths are 2.76 Å. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedra are not tilted. Both Mg(1)-O(2) bond lengths are 2.15 Å. Both Mg(1)-O(3) bond lengths are 1.93 Å. Both Mg(1)-O(4) bond lengths are 1.95 Å. La(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. The La(1)-O(1) bond length is 2.50 Å. Both La(1)-O(3) bond lengths are 2.63 Å. Both La(1)-O(4) bond lengths are 2.62 Å. All La(1)-O(2) bond lengths are 2.77 Å. Mn(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedra are not tilted. Both Mn(1)-O(1) bond lengths are 2.03 Å. Both Mn(1)-O(5) bond lengths are 1.93 Å. Both Mn(1)-O(6) bond lengths are 1.95 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one La(1), and one Mn(1) atom to form distorted OSr4LaMn octahedra that share corners with two equivalent O(3)La4Mg2 octahedra, corners with two equivalent O(4)La4Mg2 octahedra, corners with four equivalent O(5)Sr4Mn2 octahedra, corners with four equivalent O(6)Sr4Mn2 octahedra, corners with five equivalent O(1)Sr4LaMn octahedra, edges with four equivalent O(1)Sr4LaMn octahedra, edges with four equivalent O(2)SrLa4Mg octahedra, faces with two equivalent O(5)Sr4Mn2 octahedra, and faces with two equivalent O(6)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the second O site, O(2) is bonded to one Sr(1), one Mg(1), and four equivalent La(1) atoms to form distorted OSrLa4Mg octahedra that share corners with two equivalent O(5)Sr4Mn2 octahedra, corners with two equivalent O(6)Sr4Mn2 octahedra, corners with four equivalent O(3)La4Mg2 octahedra, corners with four equivalent O(4)La4Mg2 octahedra, corners with five equivalent O(2)SrLa4Mg octahedra, edges with four equivalent O(1)Sr4LaMn octahedra, edges with four equivalent O(2)SrLa4Mg octahedra, faces with two equivalent O(3)La4Mg2 octahedra, and faces with two equivalent O(4)La4Mg2 octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the third O site, O(3) is bonded to two equivalent Mg(1) and four equivalent La(1) atoms to form distorted OLa4Mg2 octahedra that share corners with two equivalent O(3)La4Mg2 octahedra, corners with four equivalent O(1)Sr4LaMn octahedra, corners with eight equivalent O(2)SrLa4Mg octahedra, edges with two equivalent O(3)La4Mg2 octahedra, faces with four equivalent O(4)La4Mg2 octahedra, and faces with four equivalent O(2)SrLa4Mg octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded to two equivalent Mg(1) and four equivalent La(1) atoms to form distorted OLa4Mg2 octahedra that share corners with two equivalent O(4)La4Mg2 octahedra, corners with four equivalent O(1)Sr4LaMn octahedra, corners with eight equivalent O(2)SrLa4Mg octahedra, edges with two equivalent O(4)La4Mg2 octahedra, faces with four equivalent O(3)La4Mg2 octahedra, and faces with four equivalent O(2)SrLa4Mg octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fifth O site, O(5) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(5)Sr4Mn2 octahedra, corners with four equivalent O(2)SrLa4Mg octahedra, corners with eight equivalent O(1)Sr4LaMn octahedra, edges with two equivalent O(5)Sr4Mn2 octahedra, faces with four equivalent O(1)Sr4LaMn octahedra, and faces with four equivalent O(6)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the sixth O site, O(6) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(6)Sr4Mn2 octahedra, corners with four equivalent O(2)SrLa4Mg octahedra, corners with eight equivalent O(1)Sr4LaMn octahedra, edges with two equivalent O(6)Sr4Mn2 octahedra, faces with four equivalent O(1)Sr4LaMn octahedra, and faces with four equivalent O(5)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°.