Yb4Mn2Sn5 crystallizes in the monoclinic C2/m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 11-coordinate geometry to three equivalent Mn(1), two equivalent Sn(2), two equivalent Sn(3), and four equivalent Sn(1) atoms. In the second Yb site, Yb(2) is bonded in a 8-coordinate geometry to one Mn(1), two equivalent Sn(1), two equivalent Sn(3), and three equivalent Sn(2) atoms. Mn(1) is bonded in a 4-coordinate geometry to one Yb(2), three equivalent Yb(1), one Sn(1), and three equivalent Sn(2) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Yb(2), four equivalent Yb(1), one Mn(1), one Sn(1), and one Sn(3) atom. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Yb(1), three equivalent Yb(2), three equivalent Mn(1), and one Sn(3) atom. In the third Sn site, Sn(3) is bonded to four equivalent Yb(1), four equivalent Yb(2), two equivalent Sn(1), and two equivalent Sn(2) atoms to form face-sharing SnYb8Sn4 cuboctahedra.
Yb4Mn2Sn5 crystallizes in the monoclinic C2/m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 11-coordinate geometry to three equivalent Mn(1), two equivalent Sn(2), two equivalent Sn(3), and four equivalent Sn(1) atoms. There is one shorter (3.23 Å) and two longer (3.47 Å) Yb(1)-Mn(1) bond lengths. Both Yb(1)-Sn(2) bond lengths are 3.32 Å. Both Yb(1)-Sn(3) bond lengths are 3.56 Å. There are two shorter (3.29 Å) and two longer (3.38 Å) Yb(1)-Sn(1) bond lengths. In the second Yb site, Yb(2) is bonded in a 8-coordinate geometry to one Mn(1), two equivalent Sn(1), two equivalent Sn(3), and three equivalent Sn(2) atoms. The Yb(2)-Mn(1) bond length is 3.48 Å. Both Yb(2)-Sn(1) bond lengths are 3.15 Å. Both Yb(2)-Sn(3) bond lengths are 3.55 Å. There are two shorter (3.23 Å) and one longer (3.27 Å) Yb(2)-Sn(2) bond length. Mn(1) is bonded in a 4-coordinate geometry to one Yb(2), three equivalent Yb(1), one Sn(1), and three equivalent Sn(2) atoms. The Mn(1)-Sn(1) bond length is 2.70 Å. There is one shorter (2.72 Å) and two longer (2.73 Å) Mn(1)-Sn(2) bond lengths. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Yb(2), four equivalent Yb(1), one Mn(1), one Sn(1), and one Sn(3) atom. The Sn(1)-Sn(1) bond length is 2.87 Å. The Sn(1)-Sn(3) bond length is 3.17 Å. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Yb(1), three equivalent Yb(2), three equivalent Mn(1), and one Sn(3) atom. The Sn(2)-Sn(3) bond length is 3.25 Å. In the third Sn site, Sn(3) is bonded to four equivalent Yb(1), four equivalent Yb(2), two equivalent Sn(1), and two equivalent Sn(2) atoms to form face-sharing SnYb8Sn4 cuboctahedra.