BaLa2Sc2O7 crystallizes in the tetragonal P4_2/mnm space group. Ba(1) is bonded in a 12-coordinate geometry to two equivalent O(4), two equivalent O(5), four equivalent O(1), and four equivalent O(3) atoms. La(1) is bonded in a 7-coordinate geometry to one O(4), one O(5), two equivalent O(3), and three equivalent O(2) atoms. Sc(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form corner-sharing ScO6 octahedra. The corner-sharing octahedral tilt angles range from 5-30°. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent La(1), and two equivalent Sc(1) atoms. In the second O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Ba(1), two equivalent La(1), and two equivalent Sc(1) atoms. In the third O site, O(5) is bonded to two equivalent Ba(1), two equivalent La(1), and two equivalent Sc(1) atoms to form edge-sharing OBa2La2Sc2 octahedra. In the fourth O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Ba(1) and two equivalent Sc(1) atoms. In the fifth O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent La(1) and one Sc(1) atom.
BaLa2Sc2O7 crystallizes in the tetragonal P4_2/mnm space group. Ba(1) is bonded in a 12-coordinate geometry to two equivalent O(4), two equivalent O(5), four equivalent O(1), and four equivalent O(3) atoms. Both Ba(1)-O(4) bond lengths are 3.39 Å. Both Ba(1)-O(5) bond lengths are 2.81 Å. There are two shorter (2.82 Å) and two longer (3.10 Å) Ba(1)-O(1) bond lengths. All Ba(1)-O(3) bond lengths are 3.10 Å. La(1) is bonded in a 7-coordinate geometry to one O(4), one O(5), two equivalent O(3), and three equivalent O(2) atoms. The La(1)-O(4) bond length is 2.58 Å. The La(1)-O(5) bond length is 2.65 Å. Both La(1)-O(3) bond lengths are 2.59 Å. There is one shorter (2.34 Å) and two longer (2.53 Å) La(1)-O(2) bond lengths. Sc(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form corner-sharing ScO6 octahedra. The corner-sharing octahedral tilt angles range from 5-30°. The Sc(1)-O(1) bond length is 2.08 Å. The Sc(1)-O(2) bond length is 2.33 Å. The Sc(1)-O(4) bond length is 2.10 Å. The Sc(1)-O(5) bond length is 2.15 Å. Both Sc(1)-O(3) bond lengths are 2.10 Å. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent La(1), and two equivalent Sc(1) atoms. In the second O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Ba(1), two equivalent La(1), and two equivalent Sc(1) atoms. In the third O site, O(5) is bonded to two equivalent Ba(1), two equivalent La(1), and two equivalent Sc(1) atoms to form edge-sharing OBa2La2Sc2 octahedra. In the fourth O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Ba(1) and two equivalent Sc(1) atoms. In the fifth O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent La(1) and one Sc(1) atom.