Nd5Sn4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 7-coordinate geometry to one Sn(3), two equivalent Sn(2), and four equivalent Sn(1) atoms. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one Sn(2), two equivalent Sn(3), and three equivalent Sn(1) atoms. In the third Nd site, Nd(3) is bonded to two equivalent Sn(1), two equivalent Sn(2), and two equivalent Sn(3) atoms to form corner-sharing NdSn6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one Nd(3), three equivalent Nd(2), and four equivalent Nd(1) atoms. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to two equivalent Nd(2), two equivalent Nd(3), four equivalent Nd(1), and one Sn(3) atom. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(3), four equivalent Nd(2), and one Sn(2) atom.
Nd5Sn4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 7-coordinate geometry to one Sn(3), two equivalent Sn(2), and four equivalent Sn(1) atoms. The Nd(1)-Sn(3) bond length is 3.46 Å. There is one shorter (3.27 Å) and one longer (3.49 Å) Nd(1)-Sn(2) bond length. There are a spread of Nd(1)-Sn(1) bond distances ranging from 3.26-3.95 Å. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one Sn(2), two equivalent Sn(3), and three equivalent Sn(1) atoms. The Nd(2)-Sn(2) bond length is 3.33 Å. Both Nd(2)-Sn(3) bond lengths are 3.29 Å. There are a spread of Nd(2)-Sn(1) bond distances ranging from 3.15-3.27 Å. In the third Nd site, Nd(3) is bonded to two equivalent Sn(1), two equivalent Sn(2), and two equivalent Sn(3) atoms to form corner-sharing NdSn6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. Both Nd(3)-Sn(1) bond lengths are 3.31 Å. There is one shorter (3.24 Å) and one longer (3.37 Å) Nd(3)-Sn(2) bond length. There is one shorter (3.24 Å) and one longer (3.40 Å) Nd(3)-Sn(3) bond length. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one Nd(3), three equivalent Nd(2), and four equivalent Nd(1) atoms. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to two equivalent Nd(2), two equivalent Nd(3), four equivalent Nd(1), and one Sn(3) atom. The Sn(2)-Sn(3) bond length is 3.00 Å. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(3), four equivalent Nd(2), and one Sn(2) atom.