Ba4Sn3O10 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one O(4), two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to one O(3), two equivalent O(2), three equivalent O(4), and four equivalent O(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form face-sharing SnO6 octahedra. In the second Sn site, Sn(2) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form a mixture of distorted corner and face-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles are 15°. There are four inequivalent O sites. In the first O site, O(4) is bonded to one Ba(1), three equivalent Ba(2), one Sn(1), and one Sn(2) atom to form a mixture of distorted corner and edge-sharing OBa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), one Sn(1), and one Sn(2) atom. In the third O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Sn(2) atoms. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to one Ba(2), three equivalent Ba(1), and one Sn(2) atom.
Ba4Sn3O10 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one O(4), two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. The Ba(1)-O(4) bond length is 2.84 Å. Both Ba(1)-O(2) bond lengths are 3.20 Å. There are two shorter (3.11 Å) and one longer (3.32 Å) Ba(1)-O(3) bond length. There are two shorter (2.83 Å) and two longer (3.02 Å) Ba(1)-O(1) bond lengths. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to one O(3), two equivalent O(2), three equivalent O(4), and four equivalent O(1) atoms. The Ba(2)-O(3) bond length is 2.55 Å. Both Ba(2)-O(2) bond lengths are 2.93 Å. There is one shorter (2.97 Å) and two longer (3.03 Å) Ba(2)-O(4) bond lengths. There are two shorter (2.94 Å) and two longer (3.22 Å) Ba(2)-O(1) bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form face-sharing SnO6 octahedra. Both Sn(1)-O(4) bond lengths are 2.10 Å. All Sn(1)-O(1) bond lengths are 2.11 Å. In the second Sn site, Sn(2) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form a mixture of distorted corner and face-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles are 15°. The Sn(2)-O(3) bond length is 1.99 Å. The Sn(2)-O(4) bond length is 2.28 Å. Both Sn(2)-O(1) bond lengths are 2.17 Å. Both Sn(2)-O(2) bond lengths are 2.04 Å. There are four inequivalent O sites. In the first O site, O(4) is bonded to one Ba(1), three equivalent Ba(2), one Sn(1), and one Sn(2) atom to form a mixture of distorted corner and edge-sharing OBa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), one Sn(1), and one Sn(2) atom. In the third O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Sn(2) atoms. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to one Ba(2), three equivalent Ba(1), and one Sn(2) atom.