SrLa2Mn2O7 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two 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(8) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. There are four inequivalent La sites. In the first La site, La(1) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form distorted LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Mn(4)O6 octahedra. In the second La site, La(2) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form distorted LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Mn(4)O6 octahedra. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. In the fourth La site, La(4) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), and four equivalent O(7) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with four equivalent Mn(3)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second Mn site, Mn(2) is bonded to one O(4), one O(5), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(4)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-11°. In the third Mn site, Mn(3) is bonded to one O(2), one O(6), and four equivalent O(7) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(4)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the fourth Mn site, Mn(4) is bonded to one O(3), one O(6), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-11°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), two equivalent La(3), two equivalent La(4), and one Mn(1) atom to form distorted OSrLa4Mn octahedra that share corners with four equivalent O(8)Sr2La2Mn2 octahedra, corners with four equivalent O(1)SrLa4Mn octahedra, edges with two equivalent O(3)Sr4LaMn octahedra, edges with two equivalent O(4)Sr4LaMn octahedra, and edges with four equivalent O(2)SrLa4Mn octahedra. The corner-sharing octahedral tilt angles range from 12-46°. In the second O site, O(2) is bonded to one Sr(2), two equivalent La(3), two equivalent La(4), and one Mn(3) atom to form distorted OSrLa4Mn octahedra that share corners with four equivalent O(8)Sr2La2Mn2 octahedra, corners with four equivalent O(2)SrLa4Mn octahedra, edges with two equivalent O(3)Sr4LaMn octahedra, edges with two equivalent O(4)Sr4LaMn octahedra, and edges with four equivalent O(1)SrLa4Mn octahedra. The corner-sharing octahedral tilt angles range from 12-46°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one La(3), and one Mn(4) atom to form distorted OSr4LaMn octahedra that share corners with four equivalent O(3)Sr4LaMn octahedra, corners with eight equivalent O(8)Sr2La2Mn2 octahedra, edges with two equivalent O(1)SrLa4Mn octahedra, edges with two equivalent O(2)SrLa4Mn octahedra, edges with four equivalent O(4)Sr4LaMn octahedra, and faces with four equivalent O(8)Sr2La2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 19-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one La(4), and one Mn(2) atom to form distorted OSr4LaMn octahedra that share corners with four equivalent O(4)Sr4LaMn octahedra, corners with eight equivalent O(8)Sr2La2Mn2 octahedra, edges with two equivalent O(1)SrLa4Mn octahedra, edges with two equivalent O(2)SrLa4Mn octahedra, edges with four equivalent O(3)Sr4LaMn octahedra, and faces with four equivalent O(8)Sr2La2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 20-50°. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Mn(1), and one Mn(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Mn(3), and one Mn(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one La(1), one La(2), one La(3), one La(4), one Mn(1), and one Mn(3) atom. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(2), one La(1), one La(2), one Mn(2), and one Mn(4) atom to form distorted OSr2La2Mn2 octahedra that share  a cornercorner with one O(1)SrLa4Mn octahedra,  a cornercorner with one O(2)SrLa4Mn octahedra, corners with two equivalent O(8)Sr2La2Mn2 octahedra, corners with two equivalent O(3)Sr4LaMn octahedra, corners with two equivalent O(4)Sr4LaMn octahedra, edges with two equivalent O(8)Sr2La2Mn2 octahedra,  a faceface with one O(3)Sr4LaMn octahedra,  a faceface with one O(4)Sr4LaMn octahedra, and faces with four equivalent O(8)Sr2La2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 9-53°.
SrLa2Mn2O7 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two 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(8) atoms. The Sr(1)-O(1) bond length is 2.45 Å. Both Sr(1)-O(3) bond lengths are 2.83 Å. Both Sr(1)-O(4) bond lengths are 2.83 Å. All Sr(1)-O(8) bond lengths are 2.76 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. The Sr(2)-O(2) bond length is 2.47 Å. Both Sr(2)-O(3) bond lengths are 2.83 Å. Both Sr(2)-O(4) bond lengths are 2.83 Å. All Sr(2)-O(8) bond lengths are 2.76 Å. There are four inequivalent La sites. In the first La site, La(1) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form distorted LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Mn(4)O6 octahedra. Both La(1)-O(5) bond lengths are 2.80 Å. Both La(1)-O(6) bond lengths are 2.80 Å. All La(1)-O(7) bond lengths are 2.94 Å. All La(1)-O(8) bond lengths are 2.61 Å. In the second La site, La(2) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form distorted LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Mn(4)O6 octahedra. Both La(2)-O(5) bond lengths are 2.80 Å. Both La(2)-O(6) bond lengths are 2.80 Å. All La(2)-O(7) bond lengths are 2.94 Å. All La(2)-O(8) bond lengths are 2.61 Å. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. The La(3)-O(3) bond length is 2.29 Å. Both La(3)-O(1) bond lengths are 2.81 Å. Both La(3)-O(2) bond lengths are 2.80 Å. All La(3)-O(7) bond lengths are 2.60 Å. In the fourth La site, La(4) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. The La(4)-O(4) bond length is 2.26 Å. Both La(4)-O(1) bond lengths are 2.81 Å. Both La(4)-O(2) bond lengths are 2.80 Å. All La(4)-O(7) bond lengths are 2.61 Å. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), and four equivalent O(7) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with four equivalent Mn(3)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The Mn(1)-O(1) bond length is 2.04 Å. The Mn(1)-O(5) bond length is 1.87 Å. All Mn(1)-O(7) 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(8) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(4)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-11°. The Mn(2)-O(4) bond length is 2.27 Å. The Mn(2)-O(5) bond length is 2.14 Å. All Mn(2)-O(8) bond lengths are 1.90 Å. In the third Mn site, Mn(3) is bonded to one O(2), one O(6), and four equivalent O(7) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(4)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The Mn(3)-O(2) bond length is 2.03 Å. The Mn(3)-O(6) bond length is 1.91 Å. All Mn(3)-O(7) bond lengths are 2.04 Å. In the fourth Mn site, Mn(4) is bonded to one O(3), one O(6), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-11°. The Mn(4)-O(3) bond length is 2.18 Å. The Mn(4)-O(6) bond length is 2.16 Å. All Mn(4)-O(8) bond lengths are 2.06 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), two equivalent La(3), two equivalent La(4), and one Mn(1) atom to form distorted OSrLa4Mn octahedra that share corners with four equivalent O(8)Sr2La2Mn2 octahedra, corners with four equivalent O(1)SrLa4Mn octahedra, edges with two equivalent O(3)Sr4LaMn octahedra, edges with two equivalent O(4)Sr4LaMn octahedra, and edges with four equivalent O(2)SrLa4Mn octahedra. The corner-sharing octahedral tilt angles range from 12-46°. In the second O site, O(2) is bonded to one Sr(2), two equivalent La(3), two equivalent La(4), and one Mn(3) atom to form distorted OSrLa4Mn octahedra that share corners with four equivalent O(8)Sr2La2Mn2 octahedra, corners with four equivalent O(2)SrLa4Mn octahedra, edges with two equivalent O(3)Sr4LaMn octahedra, edges with two equivalent O(4)Sr4LaMn octahedra, and edges with four equivalent O(1)SrLa4Mn octahedra. The corner-sharing octahedral tilt angles range from 12-46°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one La(3), and one Mn(4) atom to form distorted OSr4LaMn octahedra that share corners with four equivalent O(3)Sr4LaMn octahedra, corners with eight equivalent O(8)Sr2La2Mn2 octahedra, edges with two equivalent O(1)SrLa4Mn octahedra, edges with two equivalent O(2)SrLa4Mn octahedra, edges with four equivalent O(4)Sr4LaMn octahedra, and faces with four equivalent O(8)Sr2La2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 19-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one La(4), and one Mn(2) atom to form distorted OSr4LaMn octahedra that share corners with four equivalent O(4)Sr4LaMn octahedra, corners with eight equivalent O(8)Sr2La2Mn2 octahedra, edges with two equivalent O(1)SrLa4Mn octahedra, edges with two equivalent O(2)SrLa4Mn octahedra, edges with four equivalent O(3)Sr4LaMn octahedra, and faces with four equivalent O(8)Sr2La2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 20-50°. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Mn(1), and one Mn(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Mn(3), and one Mn(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one La(1), one La(2), one La(3), one La(4), one Mn(1), and one Mn(3) atom. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(2), one La(1), one La(2), one Mn(2), and one Mn(4) atom to form distorted OSr2La2Mn2 octahedra that share  a cornercorner with one O(1)SrLa4Mn octahedra,  a cornercorner with one O(2)SrLa4Mn octahedra, corners with two equivalent O(8)Sr2La2Mn2 octahedra, corners with two equivalent O(3)Sr4LaMn octahedra, corners with two equivalent O(4)Sr4LaMn octahedra, edges with two equivalent O(8)Sr2La2Mn2 octahedra,  a faceface with one O(3)Sr4LaMn octahedra,  a faceface with one O(4)Sr4LaMn octahedra, and faces with four equivalent O(8)Sr2La2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 9-53°.