La2Sn5 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(3), and six equivalent Sn(1) atoms. In the second La site, La(2) is bonded to two equivalent Sn(2), two equivalent Sn(3), two equivalent Sn(5), two equivalent Sn(6), and four equivalent Sn(4) atoms to form a mixture of corner and face-sharing LaSn12 cuboctahedra. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to six equivalent La(1) and two equivalent Sn(1) atoms. In the second Sn site, Sn(2) is bonded in a distorted square co-planar geometry to two equivalent La(1), two equivalent La(2), and four equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent La(1), two equivalent La(2), two equivalent Sn(4), and four equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a distorted rectangular see-saw-like geometry to four equivalent La(2) and two equivalent Sn(3) atoms. In the fifth Sn site, Sn(5) is bonded in a distorted square co-planar geometry to four equivalent La(2) atoms. In the sixth Sn site, Sn(6) is bonded in a distorted square co-planar geometry to four equivalent La(2) atoms.
La2Sn5 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(3), and six equivalent Sn(1) atoms. Both La(1)-Sn(2) bond lengths are 3.30 Å. Both La(1)-Sn(3) bond lengths are 3.31 Å. There are four shorter (3.40 Å) and two longer (3.60 Å) La(1)-Sn(1) bond lengths. In the second La site, La(2) is bonded to two equivalent Sn(2), two equivalent Sn(3), two equivalent Sn(5), two equivalent Sn(6), and four equivalent Sn(4) atoms to form a mixture of corner and face-sharing LaSn12 cuboctahedra. Both La(2)-Sn(2) bond lengths are 3.43 Å. Both La(2)-Sn(3) bond lengths are 3.45 Å. Both La(2)-Sn(5) bond lengths are 3.37 Å. Both La(2)-Sn(6) bond lengths are 3.39 Å. All La(2)-Sn(4) bond lengths are 3.34 Å. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to six equivalent La(1) and two equivalent Sn(1) atoms. Both Sn(1)-Sn(1) bond lengths are 3.12 Å. In the second Sn site, Sn(2) is bonded in a distorted square co-planar geometry to two equivalent La(1), two equivalent La(2), and four equivalent Sn(3) atoms. All Sn(2)-Sn(3) bond lengths are 3.34 Å. In the third Sn site, Sn(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent La(1), two equivalent La(2), two equivalent Sn(4), and four equivalent Sn(2) atoms. Both Sn(3)-Sn(4) bond lengths are 3.33 Å. In the fourth Sn site, Sn(4) is bonded in a distorted rectangular see-saw-like geometry to four equivalent La(2) and two equivalent Sn(3) atoms. In the fifth Sn site, Sn(5) is bonded in a distorted square co-planar geometry to four equivalent La(2) atoms. In the sixth Sn site, Sn(6) is bonded in a distorted square co-planar geometry to four equivalent La(2) atoms.