MgLa2Ti3(AgO5)2 crystallizes in the tetragonal I-4m2 space group. Mg(1) is bonded in a 8-coordinate geometry to four equivalent Ag(1) and four equivalent O(1) atoms. La(1) is bonded to four equivalent O(2,3); four equivalent O(4); and four equivalent O(5) atoms to form distorted LaO12 cuboctahedra that share corners with eight equivalent La(1)O12 cuboctahedra, faces with five equivalent La(1)O12 cuboctahedra, and faces with four equivalent Ti(2)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 6-coordinate geometry to one O(1); one O(4); and four equivalent O(2,3) atoms. In the second Ti site, Ti(2) is bonded to two equivalent O(4) and four equivalent O(5) atoms to form TiO6 octahedra that share corners with four equivalent Ti(2)O6 octahedra and faces with eight equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Ag(1) is bonded to two equivalent Mg(1) and four equivalent O(1) atoms to form a mixture of distorted face, corner, and edge-sharing AgMg2O4 octahedra. The corner-sharing octahedral tilt angles range from 5-60°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Mg(1), one Ti(1), and four equivalent Ag(1) atoms. In the second O site, O(2,3) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ti(1) atoms. In the third O site, O(4) is bonded to four equivalent La(1), one Ti(1), and one Ti(2) atom to form a mixture of distorted corner and edge-sharing OLa4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. In the fourth O site, O(5) is bonded in a linear geometry to four equivalent La(1) and two equivalent Ti(2) atoms.
MgLa2Ti3(AgO5)2 crystallizes in the tetragonal I-4m2 space group. Mg(1) is bonded in a 8-coordinate geometry to four equivalent Ag(1) and four equivalent O(1) atoms. All Mg(1)-Ag(1) bond lengths are 2.72 Å. All Mg(1)-O(1) bond lengths are 2.80 Å. La(1) is bonded to four equivalent O(2,3); four equivalent O(4); and four equivalent O(5) atoms to form distorted LaO12 cuboctahedra that share corners with eight equivalent La(1)O12 cuboctahedra, faces with five equivalent La(1)O12 cuboctahedra, and faces with four equivalent Ti(2)O6 octahedra. All La(1)-O(2,3) bond lengths are 2.55 Å. All La(1)-O(4) bond lengths are 2.74 Å. All La(1)-O(5) bond lengths are 2.92 Å. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 6-coordinate geometry to one O(1); one O(4); and four equivalent O(2,3) atoms. The Ti(1)-O(1) bond length is 1.79 Å. The Ti(1)-O(4) bond length is 2.35 Å. All Ti(1)-O(2,3) bond lengths are 1.98 Å. In the second Ti site, Ti(2) is bonded to two equivalent O(4) and four equivalent O(5) atoms to form TiO6 octahedra that share corners with four equivalent Ti(2)O6 octahedra and faces with eight equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Ti(2)-O(4) bond lengths are 1.95 Å. All Ti(2)-O(5) bond lengths are 1.93 Å. Ag(1) is bonded to two equivalent Mg(1) and four equivalent O(1) atoms to form a mixture of distorted face, corner, and edge-sharing AgMg2O4 octahedra. The corner-sharing octahedral tilt angles range from 5-60°. All Ag(1)-O(1) bond lengths are 2.73 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Mg(1), one Ti(1), and four equivalent Ag(1) atoms. In the second O site, O(2,3) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ti(1) atoms. In the third O site, O(4) is bonded to four equivalent La(1), one Ti(1), and one Ti(2) atom to form a mixture of distorted corner and edge-sharing OLa4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. In the fourth O site, O(5) is bonded in a linear geometry to four equivalent La(1) and two equivalent Ti(2) atoms.