Y4NiSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(3) atoms. In the second Y site, Y(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(4) atoms. In the third Y site, Y(3) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(1) atoms. In the fourth Y site, Y(4) is bonded in a 10-coordinate geometry to two equivalent Sn(3), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(2) atoms. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Y(3), one Sn(1), two equivalent Sn(5), and two equivalent Sn(7) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(3), one Ni(1), and two equivalent Sn(4) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Y(1), four equivalent Y(4), and two equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to two equivalent Y(4), four equivalent Y(1), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Y(3), four equivalent Y(2), and two equivalent Sn(1) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Ni(1), and four equivalent Sn(7) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Y(2), two equivalent Y(4), and four equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 10-coordinate geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Ni(1), and four equivalent Sn(5) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Y(2), two equivalent Y(4), and four equivalent Sn(6) atoms.
Y4NiSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(3) atoms. Both Y(1)-Sn(2) bond lengths are 3.51 Å. Both Y(1)-Sn(5) bond lengths are 3.22 Å. Both Y(1)-Sn(7) bond lengths are 3.23 Å. All Y(1)-Sn(3) bond lengths are 3.19 Å. In the second Y site, Y(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(4) atoms. Both Y(2)-Sn(1) bond lengths are 3.33 Å. Both Y(2)-Sn(6) bond lengths are 3.27 Å. Both Y(2)-Sn(8) bond lengths are 3.38 Å. All Y(2)-Sn(4) bond lengths are 3.16 Å. In the third Y site, Y(3) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(1) atoms. All Y(3)-Ni(1) bond lengths are 3.44 Å. Both Y(3)-Sn(4) bond lengths are 3.67 Å. Both Y(3)-Sn(5) bond lengths are 3.49 Å. Both Y(3)-Sn(7) bond lengths are 3.48 Å. All Y(3)-Sn(1) bond lengths are 3.27 Å. In the fourth Y site, Y(4) is bonded in a 10-coordinate geometry to two equivalent Sn(3), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(2) atoms. Both Y(4)-Sn(3) bond lengths are 3.47 Å. Both Y(4)-Sn(6) bond lengths are 3.39 Å. Both Y(4)-Sn(8) bond lengths are 3.29 Å. All Y(4)-Sn(2) bond lengths are 3.18 Å. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Y(3), one Sn(1), two equivalent Sn(5), and two equivalent Sn(7) atoms. The Ni(1)-Sn(1) bond length is 2.46 Å. Both Ni(1)-Sn(5) bond lengths are 2.53 Å. Both Ni(1)-Sn(7) bond lengths are 2.52 Å. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(3), one Ni(1), and two equivalent Sn(4) atoms. Both Sn(1)-Sn(4) bond lengths are 2.94 Å. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Y(1), four equivalent Y(4), and two equivalent Sn(3) atoms. Both Sn(2)-Sn(3) bond lengths are 3.01 Å. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to two equivalent Y(4), four equivalent Y(1), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Y(3), four equivalent Y(2), and two equivalent Sn(1) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Ni(1), and four equivalent Sn(7) atoms. All Sn(5)-Sn(7) bond lengths are 3.12 Å. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Y(2), two equivalent Y(4), and four equivalent Sn(8) atoms. All Sn(6)-Sn(8) bond lengths are 3.12 Å. In the seventh Sn site, Sn(7) is bonded in a 10-coordinate geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Ni(1), and four equivalent Sn(5) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Y(2), two equivalent Y(4), and four equivalent Sn(6) atoms.