SmSn2 is Zirconium Disilicide-like structured and crystallizes in the orthorhombic Cmmm space group. Sm(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(2), and six equivalent Sn(3) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted square co-planar geometry to four equivalent Sm(1) and four equivalent Sn(2) atoms. In the second Sn site, Sn(2) is bonded in a distorted square co-planar geometry to four equivalent Sm(1) and four equivalent Sn(1) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to six equivalent Sm(1) and two equivalent Sn(3) atoms.
SmSn2 is Zirconium Disilicide-like structured and crystallizes in the orthorhombic Cmmm space group. Sm(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(2), and six equivalent Sn(3) atoms. Both Sm(1)-Sn(1) bond lengths are 3.22 Å. Both Sm(1)-Sn(2) bond lengths are 3.25 Å. There are four shorter (3.25 Å) and two longer (3.55 Å) Sm(1)-Sn(3) bond lengths. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted square co-planar geometry to four equivalent Sm(1) and four equivalent Sn(2) atoms. All Sn(1)-Sn(2) bond lengths are 3.17 Å. In the second Sn site, Sn(2) is bonded in a distorted square co-planar geometry to four equivalent Sm(1) and four equivalent Sn(1) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to six equivalent Sm(1) and two equivalent Sn(3) atoms. Both Sn(3)-Sn(3) bond lengths are 3.00 Å.