BaLa2Ti3O10 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a 6-coordinate geometry to six equivalent O(6) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(4), two equivalent O(7), and four equivalent O(5) atoms to form distorted LaO12 cuboctahedra that share corners with two equivalent La(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, and faces with four equivalent Ti(1)O6 octahedra. In the second La site, La(2) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(7), and four equivalent O(5) atoms to form LaO12 cuboctahedra that share corners with two equivalent La(2)O12 cuboctahedra, corners with six equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, and faces with four equivalent Ti(1)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with four equivalent Ti(1)O6 octahedra, faces with four equivalent La(1)O12 cuboctahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the second Ti site, Ti(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a 6-coordinate geometry to two equivalent La(1), two equivalent La(2), one Ti(1), and one Ti(2) atom. In the second O site, O(6) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one Ti(2) atom. In the third O site, O(7) is bonded in a 4-coordinate geometry to one La(1), one La(2), and two equivalent Ti(2) atoms. In the fourth O site, O(1) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), and two equivalent Ti(1) atoms. In the fifth O site, O(2) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), and two equivalent Ti(1) atoms. In the sixth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent La(2) and two equivalent Ti(2) atoms. In the seventh O site, O(4) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ti(2) atoms.
BaLa2Ti3O10 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a 6-coordinate geometry to six equivalent O(6) atoms. There are two shorter (2.71 Å) and four longer (2.72 Å) Ba(1)-O(6) bond lengths. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(4), two equivalent O(7), and four equivalent O(5) atoms to form distorted LaO12 cuboctahedra that share corners with two equivalent La(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, and faces with four equivalent Ti(1)O6 octahedra. Both La(1)-O(1) bond lengths are 2.94 Å. Both La(1)-O(2) bond lengths are 3.03 Å. Both La(1)-O(4) bond lengths are 2.61 Å. Both La(1)-O(7) bond lengths are 2.54 Å. All La(1)-O(5) bond lengths are 2.70 Å. In the second La site, La(2) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(7), and four equivalent O(5) atoms to form LaO12 cuboctahedra that share corners with two equivalent La(2)O12 cuboctahedra, corners with six equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, and faces with four equivalent Ti(1)O6 octahedra. Both La(2)-O(1) bond lengths are 2.89 Å. Both La(2)-O(2) bond lengths are 2.83 Å. Both La(2)-O(3) bond lengths are 2.51 Å. Both La(2)-O(7) bond lengths are 2.54 Å. All La(2)-O(5) bond lengths are 2.84 Å. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with four equivalent Ti(1)O6 octahedra, faces with four equivalent La(1)O12 cuboctahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-6°. Both Ti(1)-O(1) bond lengths are 1.96 Å. Both Ti(1)-O(2) bond lengths are 1.94 Å. Both Ti(1)-O(5) bond lengths are 1.94 Å. In the second Ti site, Ti(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. The Ti(2)-O(3) bond length is 2.00 Å. The Ti(2)-O(4) bond length is 1.96 Å. The Ti(2)-O(5) bond length is 2.28 Å. The Ti(2)-O(6) bond length is 1.77 Å. Both Ti(2)-O(7) bond lengths are 2.00 Å. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a 6-coordinate geometry to two equivalent La(1), two equivalent La(2), one Ti(1), and one Ti(2) atom. In the second O site, O(6) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one Ti(2) atom. In the third O site, O(7) is bonded in a 4-coordinate geometry to one La(1), one La(2), and two equivalent Ti(2) atoms. In the fourth O site, O(1) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), and two equivalent Ti(1) atoms. In the fifth O site, O(2) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), and two equivalent Ti(1) atoms. In the sixth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent La(2) and two equivalent Ti(2) atoms. In the seventh O site, O(4) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ti(2) atoms.