YMnSn2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 8-coordinate geometry to one Sn(4), one Sn(5), two equivalent Sn(1), two equivalent Sn(2), and two equivalent Sn(3) atoms. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), and three equivalent Sn(5) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to one Sn(2), one Sn(3), one Sn(4), one Sn(5), and two equivalent Sn(1) atoms. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to two equivalent Sn(1), two equivalent Sn(4), and two equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(2) is bonded in a 2-coordinate geometry to four equivalent Y(1) and two equivalent Mn(1) atoms. In the second Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), two equivalent Mn(1), and one Sn(3) atom. In the third Sn site, Sn(4) is bonded in a 6-coordinate geometry to two equivalent Y(1), two equivalent Mn(1), and two equivalent Mn(2) atoms. In the fourth Sn site, Sn(5) is bonded in a 9-coordinate geometry to two equivalent Y(1), three equivalent Y(2), two equivalent Mn(1), and two equivalent Mn(2) atoms. In the fifth Sn site, Sn(1) is bonded in a 7-coordinate geometry to one Y(2), two equivalent Y(1), one Mn(2), two equivalent Mn(1), and one Sn(1) atom.
YMnSn2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 8-coordinate geometry to one Sn(4), one Sn(5), two equivalent Sn(1), two equivalent Sn(2), and two equivalent Sn(3) atoms. The Y(1)-Sn(4) bond length is 3.20 Å. The Y(1)-Sn(5) bond length is 3.10 Å. There is one shorter (3.23 Å) and one longer (3.26 Å) Y(1)-Sn(1) bond length. There is one shorter (3.32 Å) and one longer (3.35 Å) Y(1)-Sn(2) bond length. Both Y(1)-Sn(3) bond lengths are 3.24 Å. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), and three equivalent Sn(5) atoms. Both Y(2)-Sn(1) bond lengths are 3.05 Å. There is one shorter (3.13 Å) and one longer (3.16 Å) Y(2)-Sn(3) bond length. There are a spread of Y(2)-Sn(5) bond distances ranging from 3.20-3.32 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to one Sn(2), one Sn(3), one Sn(4), one Sn(5), and two equivalent Sn(1) atoms. The Mn(1)-Sn(2) bond length is 2.76 Å. The Mn(1)-Sn(3) bond length is 2.74 Å. The Mn(1)-Sn(4) bond length is 2.89 Å. The Mn(1)-Sn(5) bond length is 2.81 Å. There is one shorter (2.85 Å) and one longer (2.88 Å) Mn(1)-Sn(1) bond length. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to two equivalent Sn(1), two equivalent Sn(4), and two equivalent Sn(5) atoms. Both Mn(2)-Sn(1) bond lengths are 2.82 Å. Both Mn(2)-Sn(4) bond lengths are 2.87 Å. Both Mn(2)-Sn(5) bond lengths are 2.82 Å. There are five inequivalent Sn sites. In the first Sn site, Sn(2) is bonded in a 2-coordinate geometry to four equivalent Y(1) and two equivalent Mn(1) atoms. In the second Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), two equivalent Mn(1), and one Sn(3) atom. The Sn(3)-Sn(3) bond length is 2.93 Å. In the third Sn site, Sn(4) is bonded in a 6-coordinate geometry to two equivalent Y(1), two equivalent Mn(1), and two equivalent Mn(2) atoms. In the fourth Sn site, Sn(5) is bonded in a 9-coordinate geometry to two equivalent Y(1), three equivalent Y(2), two equivalent Mn(1), and two equivalent Mn(2) atoms. In the fifth Sn site, Sn(1) is bonded in a 7-coordinate geometry to one Y(2), two equivalent Y(1), one Mn(2), two equivalent Mn(1), and one Sn(1) atom. The Sn(1)-Sn(1) bond length is 2.91 Å.