Sr2MgLa2MnO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(6), two equivalent O(8), and four equivalent O(10) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(7), two equivalent O(9), and four equivalent O(10) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(8), two equivalent O(2), two equivalent O(5), and four equivalent O(1) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(9), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(6), one O(7), and four equivalent O(10) atoms to form MgO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second Mg site, Mg(2) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form MgO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(7), two equivalent O(9), and four equivalent O(10) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(6), two equivalent O(8), and four equivalent O(10) atoms. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(6), two equivalent O(2), two equivalent O(5), and four equivalent O(1) atoms. In the fourth La site, La(4) is bonded in a 9-coordinate geometry to one O(7), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(8), one O(9), and four equivalent O(10) atoms to form MnO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second Mn site, Mn(2) is bonded to one O(4), one O(5), and four equivalent O(1) atoms to form MnO6 octahedra that share corners with four equivalent Mg(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Sr(3), one Sr(4), one Mg(2), one La(3), one La(4), and one Mn(2) atom to form distorted OSr2La2MgMn octahedra that share  a cornercorner with one O(6)Sr2La3Mg octahedra,  a cornercorner with one O(7)Sr2La3Mg octahedra,  a cornercorner with one O(8)Sr3La2Mn octahedra,  a cornercorner with one O(9)Sr3La2Mn octahedra, corners with two equivalent O(1)Sr2La2MgMn octahedra, corners with two equivalent O(3)Sr2La3Mg octahedra, corners with two equivalent O(5)Sr2La3Mn octahedra, corners with two equivalent O(2)Sr3La2Mg octahedra, corners with two equivalent O(4)Sr3La2Mn octahedra, edges with two equivalent O(1)Sr2La2MgMn octahedra,  a faceface with one O(3)Sr2La3Mg octahedra,  a faceface with one O(5)Sr2La3Mn octahedra,  a faceface with one O(2)Sr3La2Mg octahedra,  a faceface with one O(4)Sr3La2Mn octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 1-55°. In the second O site, O(2) is bonded to one Sr(1), two equivalent Sr(3), one Mg(2), and two equivalent La(3) atoms to form distorted OSr3La2Mg octahedra that share  a cornercorner with one O(3)Sr2La3Mg octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(2)Sr3La2Mg octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(6)Sr2La3Mg octahedra, edges with two equivalent O(8)Sr3La2Mn octahedra, edges with four equivalent O(5)Sr2La3Mn octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the third O site, O(3) is bonded to two equivalent Sr(4), one Mg(2), one La(1), and two equivalent La(4) atoms to form distorted OSr2La3Mg octahedra that share  a cornercorner with one O(2)Sr3La2Mg octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(3)Sr2La3Mg octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(7)Sr2La3Mg octahedra, edges with two equivalent O(9)Sr3La2Mn octahedra, edges with four equivalent O(4)Sr3La2Mn octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded to one Sr(2), two equivalent Sr(4), two equivalent La(4), and one Mn(2) atom to form distorted OSr3La2Mn octahedra that share  a cornercorner with one O(5)Sr2La3Mn octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(4)Sr3La2Mn octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(7)Sr2La3Mg octahedra, edges with two equivalent O(9)Sr3La2Mn octahedra, edges with four equivalent O(3)Sr2La3Mg octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the fifth O site, O(5) is bonded to two equivalent Sr(3), one La(2), two equivalent La(3), and one Mn(2) atom to form distorted OSr2La3Mn octahedra that share  a cornercorner with one O(4)Sr3La2Mn octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(5)Sr2La3Mn octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(6)Sr2La3Mg octahedra, edges with two equivalent O(8)Sr3La2Mn octahedra, edges with four equivalent O(2)Sr3La2Mg octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the sixth O site, O(6) is bonded to two equivalent Sr(1), one Mg(1), one La(3), and two equivalent La(2) atoms to form distorted OSr2La3Mg octahedra that share  a cornercorner with one O(7)Sr2La3Mg octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(6)Sr2La3Mg octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(5)Sr2La3Mn octahedra, edges with two equivalent O(2)Sr3La2Mg octahedra, edges with four equivalent O(8)Sr3La2Mn octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the seventh O site, O(7) is bonded to two equivalent Sr(2), one Mg(1), one La(4), and two equivalent La(1) atoms to form distorted OSr2La3Mg octahedra that share  a cornercorner with one O(6)Sr2La3Mg octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(7)Sr2La3Mg octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(3)Sr2La3Mg octahedra, edges with two equivalent O(4)Sr3La2Mn octahedra, edges with four equivalent O(9)Sr3La2Mn octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the eighth O site, O(8) is bonded to one Sr(3), two equivalent Sr(1), two equivalent La(2), and one Mn(1) atom to form distorted OSr3La2Mn octahedra that share  a cornercorner with one O(9)Sr3La2Mn octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(8)Sr3La2Mn octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(5)Sr2La3Mn octahedra, edges with two equivalent O(2)Sr3La2Mg octahedra, edges with four equivalent O(6)Sr2La3Mg octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the ninth O site, O(9) is bonded to one Sr(4), two equivalent Sr(2), two equivalent La(1), and one Mn(1) atom to form distorted OSr3La2Mn octahedra that share  a cornercorner with one O(8)Sr3La2Mn octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(9)Sr3La2Mn octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(3)Sr2La3Mg octahedra, edges with two equivalent O(4)Sr3La2Mn octahedra, edges with four equivalent O(7)Sr2La3Mg octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the tenth O site, O(10) is bonded to one Sr(1), one Sr(2), one Mg(1), one La(1), one La(2), and one Mn(1) atom to form distorted OSr2La2MgMn octahedra that share  a cornercorner with one O(3)Sr2La3Mg octahedra,  a cornercorner with one O(5)Sr2La3Mn octahedra,  a cornercorner with one O(2)Sr3La2Mg octahedra,  a cornercorner with one O(4)Sr3La2Mn octahedra, corners with two equivalent O(10)Sr2La2MgMn octahedra, corners with two equivalent O(6)Sr2La3Mg octahedra, corners with two equivalent O(7)Sr2La3Mg octahedra, corners with two equivalent O(8)Sr3La2Mn octahedra, corners with two equivalent O(9)Sr3La2Mn octahedra, edges with two equivalent O(10)Sr2La2MgMn octahedra,  a faceface with one O(6)Sr2La3Mg octahedra,  a faceface with one O(7)Sr2La3Mg octahedra,  a faceface with one O(8)Sr3La2Mn octahedra,  a faceface with one O(9)Sr3La2Mn octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°.
Sr2MgLa2MnO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(6), two equivalent O(8), and four equivalent O(10) atoms. The Sr(1)-O(2) bond length is 2.39 Å. Both Sr(1)-O(6) bond lengths are 2.78 Å. Both Sr(1)-O(8) bond lengths are 2.76 Å. All Sr(1)-O(10) bond lengths are 2.67 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(7), two equivalent O(9), and four equivalent O(10) atoms. The Sr(2)-O(4) bond length is 2.50 Å. Both Sr(2)-O(7) bond lengths are 2.78 Å. Both Sr(2)-O(9) bond lengths are 2.76 Å. All Sr(2)-O(10) bond lengths are 2.65 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(8), two equivalent O(2), two equivalent O(5), and four equivalent O(1) atoms. The Sr(3)-O(8) bond length is 2.52 Å. Both Sr(3)-O(2) bond lengths are 2.77 Å. Both Sr(3)-O(5) bond lengths are 2.77 Å. All Sr(3)-O(1) bond lengths are 2.69 Å. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(9), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. The Sr(4)-O(9) bond length is 2.52 Å. Both Sr(4)-O(3) bond lengths are 2.79 Å. Both Sr(4)-O(4) bond lengths are 2.76 Å. All Sr(4)-O(1) bond lengths are 2.66 Å. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(6), one O(7), and four equivalent O(10) atoms to form MgO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 1°. The Mg(1)-O(6) bond length is 2.20 Å. The Mg(1)-O(7) bond length is 2.23 Å. All Mg(1)-O(10) bond lengths are 2.00 Å. In the second Mg site, Mg(2) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form MgO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. The Mg(2)-O(2) bond length is 2.07 Å. The Mg(2)-O(3) bond length is 2.28 Å. All Mg(2)-O(1) bond lengths are 2.01 Å. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(7), two equivalent O(9), and four equivalent O(10) atoms. The La(1)-O(3) bond length is 2.31 Å. Both La(1)-O(7) bond lengths are 2.79 Å. Both La(1)-O(9) bond lengths are 2.76 Å. All La(1)-O(10) bond lengths are 2.63 Å. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(6), two equivalent O(8), and four equivalent O(10) atoms. The La(2)-O(5) bond length is 2.44 Å. Both La(2)-O(6) bond lengths are 2.79 Å. Both La(2)-O(8) bond lengths are 2.76 Å. All La(2)-O(10) bond lengths are 2.60 Å. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(6), two equivalent O(2), two equivalent O(5), and four equivalent O(1) atoms. The La(3)-O(6) bond length is 2.32 Å. Both La(3)-O(2) bond lengths are 2.77 Å. Both La(3)-O(5) bond lengths are 2.77 Å. All La(3)-O(1) bond lengths are 2.62 Å. In the fourth La site, La(4) is bonded in a 9-coordinate geometry to one O(7), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. The La(4)-O(7) bond length is 2.32 Å. Both La(4)-O(3) bond lengths are 2.79 Å. Both La(4)-O(4) bond lengths are 2.76 Å. All La(4)-O(1) bond lengths are 2.59 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(8), one O(9), and four equivalent O(10) atoms to form MnO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 1°. The Mn(1)-O(8) bond length is 1.99 Å. The Mn(1)-O(9) bond length is 2.00 Å. All Mn(1)-O(10) bond lengths are 1.90 Å. In the second Mn site, Mn(2) is bonded to one O(4), one O(5), and four equivalent O(1) atoms to form MnO6 octahedra that share corners with four equivalent Mg(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. The Mn(2)-O(4) bond length is 1.96 Å. The Mn(2)-O(5) bond length is 2.16 Å. All Mn(2)-O(1) bond lengths are 1.89 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Sr(3), one Sr(4), one Mg(2), one La(3), one La(4), and one Mn(2) atom to form distorted OSr2La2MgMn octahedra that share  a cornercorner with one O(6)Sr2La3Mg octahedra,  a cornercorner with one O(7)Sr2La3Mg octahedra,  a cornercorner with one O(8)Sr3La2Mn octahedra,  a cornercorner with one O(9)Sr3La2Mn octahedra, corners with two equivalent O(1)Sr2La2MgMn octahedra, corners with two equivalent O(3)Sr2La3Mg octahedra, corners with two equivalent O(5)Sr2La3Mn octahedra, corners with two equivalent O(2)Sr3La2Mg octahedra, corners with two equivalent O(4)Sr3La2Mn octahedra, edges with two equivalent O(1)Sr2La2MgMn octahedra,  a faceface with one O(3)Sr2La3Mg octahedra,  a faceface with one O(5)Sr2La3Mn octahedra,  a faceface with one O(2)Sr3La2Mg octahedra,  a faceface with one O(4)Sr3La2Mn octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 1-55°. In the second O site, O(2) is bonded to one Sr(1), two equivalent Sr(3), one Mg(2), and two equivalent La(3) atoms to form distorted OSr3La2Mg octahedra that share  a cornercorner with one O(3)Sr2La3Mg octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(2)Sr3La2Mg octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(6)Sr2La3Mg octahedra, edges with two equivalent O(8)Sr3La2Mn octahedra, edges with four equivalent O(5)Sr2La3Mn octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the third O site, O(3) is bonded to two equivalent Sr(4), one Mg(2), one La(1), and two equivalent La(4) atoms to form distorted OSr2La3Mg octahedra that share  a cornercorner with one O(2)Sr3La2Mg octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(3)Sr2La3Mg octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(7)Sr2La3Mg octahedra, edges with two equivalent O(9)Sr3La2Mn octahedra, edges with four equivalent O(4)Sr3La2Mn octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded to one Sr(2), two equivalent Sr(4), two equivalent La(4), and one Mn(2) atom to form distorted OSr3La2Mn octahedra that share  a cornercorner with one O(5)Sr2La3Mn octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(4)Sr3La2Mn octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(7)Sr2La3Mg octahedra, edges with two equivalent O(9)Sr3La2Mn octahedra, edges with four equivalent O(3)Sr2La3Mg octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the fifth O site, O(5) is bonded to two equivalent Sr(3), one La(2), two equivalent La(3), and one Mn(2) atom to form distorted OSr2La3Mn octahedra that share  a cornercorner with one O(4)Sr3La2Mn octahedra, corners with four equivalent O(10)Sr2La2MgMn octahedra, corners with four equivalent O(5)Sr2La3Mn octahedra, corners with eight equivalent O(1)Sr2La2MgMn octahedra, edges with two equivalent O(6)Sr2La3Mg octahedra, edges with two equivalent O(8)Sr3La2Mn octahedra, edges with four equivalent O(2)Sr3La2Mg octahedra, and faces with four equivalent O(1)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the sixth O site, O(6) is bonded to two equivalent Sr(1), one Mg(1), one La(3), and two equivalent La(2) atoms to form distorted OSr2La3Mg octahedra that share  a cornercorner with one O(7)Sr2La3Mg octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(6)Sr2La3Mg octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(5)Sr2La3Mn octahedra, edges with two equivalent O(2)Sr3La2Mg octahedra, edges with four equivalent O(8)Sr3La2Mn octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the seventh O site, O(7) is bonded to two equivalent Sr(2), one Mg(1), one La(4), and two equivalent La(1) atoms to form distorted OSr2La3Mg octahedra that share  a cornercorner with one O(6)Sr2La3Mg octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(7)Sr2La3Mg octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(3)Sr2La3Mg octahedra, edges with two equivalent O(4)Sr3La2Mn octahedra, edges with four equivalent O(9)Sr3La2Mn octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the eighth O site, O(8) is bonded to one Sr(3), two equivalent Sr(1), two equivalent La(2), and one Mn(1) atom to form distorted OSr3La2Mn octahedra that share  a cornercorner with one O(9)Sr3La2Mn octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(8)Sr3La2Mn octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(5)Sr2La3Mn octahedra, edges with two equivalent O(2)Sr3La2Mg octahedra, edges with four equivalent O(6)Sr2La3Mg octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the ninth O site, O(9) is bonded to one Sr(4), two equivalent Sr(2), two equivalent La(1), and one Mn(1) atom to form distorted OSr3La2Mn octahedra that share  a cornercorner with one O(8)Sr3La2Mn octahedra, corners with four equivalent O(1)Sr2La2MgMn octahedra, corners with four equivalent O(9)Sr3La2Mn octahedra, corners with eight equivalent O(10)Sr2La2MgMn octahedra, edges with two equivalent O(3)Sr2La3Mg octahedra, edges with two equivalent O(4)Sr3La2Mn octahedra, edges with four equivalent O(7)Sr2La3Mg octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the tenth O site, O(10) is bonded to one Sr(1), one Sr(2), one Mg(1), one La(1), one La(2), and one Mn(1) atom to form distorted OSr2La2MgMn octahedra that share  a cornercorner with one O(3)Sr2La3Mg octahedra,  a cornercorner with one O(5)Sr2La3Mn octahedra,  a cornercorner with one O(2)Sr3La2Mg octahedra,  a cornercorner with one O(4)Sr3La2Mn octahedra, corners with two equivalent O(10)Sr2La2MgMn octahedra, corners with two equivalent O(6)Sr2La3Mg octahedra, corners with two equivalent O(7)Sr2La3Mg octahedra, corners with two equivalent O(8)Sr3La2Mn octahedra, corners with two equivalent O(9)Sr3La2Mn octahedra, edges with two equivalent O(10)Sr2La2MgMn octahedra,  a faceface with one O(6)Sr2La3Mg octahedra,  a faceface with one O(7)Sr2La3Mg octahedra,  a faceface with one O(8)Sr3La2Mn octahedra,  a faceface with one O(9)Sr3La2Mn octahedra, and faces with four equivalent O(10)Sr2La2MgMn octahedra. The corner-sharing octahedral tilt angles range from 0-55°.