Sr2MgLa2Ti3O12 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(5) atoms. Mg(1) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form MgO6 octahedra that share corners with two equivalent Ti(2)O6 octahedra and corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-26°. La(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(2), and four equivalent O(6) atoms. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(1) and four equivalent O(5) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 12-19°. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form TiO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra, and corners with four equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-26°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to four equivalent Sr(1), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), four equivalent La(1), and one Ti(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent La(1), and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent La(1), and two equivalent Ti(2) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to four equivalent Sr(1) and two equivalent Ti(1) atoms. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and four equivalent La(1) atoms.
Sr2MgLa2Ti3O12 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(5) atoms. There is one shorter (2.58 Å) and one longer (2.68 Å) Sr(1)-O(3) bond length. There is one shorter (3.02 Å) and one longer (3.10 Å) Sr(1)-O(4) bond length. There are a spread of Sr(1)-O(1) bond distances ranging from 2.52-3.10 Å. There are a spread of Sr(1)-O(5) bond distances ranging from 2.62-2.94 Å. Mg(1) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form MgO6 octahedra that share corners with two equivalent Ti(2)O6 octahedra and corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-26°. Both Mg(1)-O(2) bond lengths are 2.13 Å. All Mg(1)-O(6) bond lengths are 2.02 Å. La(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(2), and four equivalent O(6) atoms. There is one shorter (3.04 Å) and one longer (3.24 Å) La(1)-O(3) bond length. There is one shorter (2.60 Å) and one longer (2.64 Å) La(1)-O(4) bond length. There are a spread of La(1)-O(2) bond distances ranging from 2.45-3.20 Å. There are a spread of La(1)-O(6) bond distances ranging from 2.37-3.17 Å. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(1) and four equivalent O(5) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 12-19°. Both Ti(1)-O(1) bond lengths are 1.99 Å. All Ti(1)-O(5) bond lengths are 1.99 Å. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form TiO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra, and corners with four equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-26°. The Ti(2)-O(1) bond length is 2.02 Å. The Ti(2)-O(2) bond length is 1.90 Å. There is one shorter (1.90 Å) and one longer (2.05 Å) Ti(2)-O(3) bond length. There is one shorter (1.96 Å) and one longer (2.13 Å) Ti(2)-O(4) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to four equivalent Sr(1), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), four equivalent La(1), and one Ti(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent La(1), and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent La(1), and two equivalent Ti(2) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to four equivalent Sr(1) and two equivalent Ti(1) atoms. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and four equivalent La(1) atoms.