Yb7Ni4Sn13 crystallizes in the tetragonal P4/m space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 16-coordinate geometry to four equivalent Ni(1), four equivalent Sn(1), and eight equivalent Sn(2) atoms. In the second Yb site, Yb(2) is bonded in a 11-coordinate geometry to two equivalent Ni(1), one Sn(2), two equivalent Sn(1), two equivalent Sn(4), and four equivalent Sn(3) atoms. In the third Yb site, Yb(3) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(2), four equivalent Sn(1), and four equivalent Sn(3) atoms. Ni(1) is bonded in a 5-coordinate geometry to one Yb(1), two equivalent Yb(2), two equivalent Yb(3), one Sn(3), two equivalent Sn(1), and two equivalent Sn(2) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one Yb(1), two equivalent Yb(2), two equivalent Yb(3), two equivalent Ni(1), and one Sn(3) atom. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to one Yb(2), one Yb(3), two equivalent Yb(1), and two equivalent Ni(1) atoms. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Yb(3), four equivalent Yb(2), one Ni(1), one Sn(1), and one Sn(4) atom. In the fourth Sn site, Sn(4) is bonded to eight equivalent Yb(2) and four equivalent Sn(3) atoms to form face-sharing SnYb8Sn4 cuboctahedra.
Yb7Ni4Sn13 crystallizes in the tetragonal P4/m space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 16-coordinate geometry to four equivalent Ni(1), four equivalent Sn(1), and eight equivalent Sn(2) atoms. All Yb(1)-Ni(1) bond lengths are 3.38 Å. All Yb(1)-Sn(1) bond lengths are 3.42 Å. All Yb(1)-Sn(2) bond lengths are 3.25 Å. In the second Yb site, Yb(2) is bonded in a 11-coordinate geometry to two equivalent Ni(1), one Sn(2), two equivalent Sn(1), two equivalent Sn(4), and four equivalent Sn(3) atoms. Both Yb(2)-Ni(1) bond lengths are 3.40 Å. The Yb(2)-Sn(2) bond length is 3.32 Å. Both Yb(2)-Sn(1) bond lengths are 3.41 Å. Both Yb(2)-Sn(4) bond lengths are 3.49 Å. There are two shorter (3.17 Å) and two longer (3.31 Å) Yb(2)-Sn(3) bond lengths. In the third Yb site, Yb(3) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(2), four equivalent Sn(1), and four equivalent Sn(3) atoms. All Yb(3)-Ni(1) bond lengths are 3.66 Å. Both Yb(3)-Sn(2) bond lengths are 3.58 Å. All Yb(3)-Sn(1) bond lengths are 3.56 Å. All Yb(3)-Sn(3) bond lengths are 3.34 Å. Ni(1) is bonded in a 5-coordinate geometry to one Yb(1), two equivalent Yb(2), two equivalent Yb(3), one Sn(3), two equivalent Sn(1), and two equivalent Sn(2) atoms. The Ni(1)-Sn(3) bond length is 2.53 Å. There is one shorter (2.59 Å) and one longer (2.61 Å) Ni(1)-Sn(1) bond length. Both Ni(1)-Sn(2) bond lengths are 2.53 Å. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one Yb(1), two equivalent Yb(2), two equivalent Yb(3), two equivalent Ni(1), and one Sn(3) atom. The Sn(1)-Sn(3) bond length is 2.88 Å. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to one Yb(2), one Yb(3), two equivalent Yb(1), and two equivalent Ni(1) atoms. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Yb(3), four equivalent Yb(2), one Ni(1), one Sn(1), and one Sn(4) atom. The Sn(3)-Sn(4) bond length is 3.20 Å. In the fourth Sn site, Sn(4) is bonded to eight equivalent Yb(2) and four equivalent Sn(3) atoms to form face-sharing SnYb8Sn4 cuboctahedra.