Y5(NiTe)2 crystallizes in the orthorhombic Pnma space group. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded in a 6-coordinate geometry to one Ni(2), two equivalent Ni(1), one Te(1), and two equivalent Te(2) atoms. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to one Ni(2), two equivalent Ni(1), one Te(1), and two equivalent Te(2) atoms. In the third Y site, Y(3) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Ni(2), and three equivalent Te(1) atoms. In the fourth Y site, Y(4) is bonded in a 5-coordinate geometry to one Ni(1), one Ni(2), one Te(2), and two equivalent Te(1) atoms. In the fifth Y site, Y(5) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Ni(2), and three equivalent Te(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to one Y(3), one Y(4), one Y(5), two equivalent Y(1), two equivalent Y(2), and two equivalent Ni(2) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to one Y(1), one Y(2), one Y(4), two equivalent Y(3), two equivalent Y(5), and two equivalent Ni(1) atoms. There are two inequivalent Te sites. In the first Te site, Te(2) is bonded in a 8-coordinate geometry to one Y(4), two equivalent Y(1), two equivalent Y(2), and three equivalent Y(5) atoms. In the second Te site, Te(1) is bonded to one Y(1), one Y(2), two equivalent Y(4), and three equivalent Y(3) atoms to form distorted edge-sharing TeY7 pentagonal bipyramids.
Y5(NiTe)2 crystallizes in the orthorhombic Pnma space group. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded in a 6-coordinate geometry to one Ni(2), two equivalent Ni(1), one Te(1), and two equivalent Te(2) atoms. The Y(1)-Ni(2) bond length is 3.10 Å. Both Y(1)-Ni(1) bond lengths are 2.76 Å. The Y(1)-Te(1) bond length is 3.20 Å. Both Y(1)-Te(2) bond lengths are 3.25 Å. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to one Ni(2), two equivalent Ni(1), one Te(1), and two equivalent Te(2) atoms. The Y(2)-Ni(2) bond length is 2.79 Å. Both Y(2)-Ni(1) bond lengths are 2.72 Å. The Y(2)-Te(1) bond length is 3.11 Å. Both Y(2)-Te(2) bond lengths are 3.24 Å. In the third Y site, Y(3) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Ni(2), and three equivalent Te(1) atoms. The Y(3)-Ni(1) bond length is 2.84 Å. Both Y(3)-Ni(2) bond lengths are 2.76 Å. There is one shorter (3.11 Å) and two longer (3.21 Å) Y(3)-Te(1) bond lengths. In the fourth Y site, Y(4) is bonded in a 5-coordinate geometry to one Ni(1), one Ni(2), one Te(2), and two equivalent Te(1) atoms. The Y(4)-Ni(1) bond length is 3.15 Å. The Y(4)-Ni(2) bond length is 3.08 Å. The Y(4)-Te(2) bond length is 3.54 Å. Both Y(4)-Te(1) bond lengths are 3.23 Å. In the fifth Y site, Y(5) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Ni(2), and three equivalent Te(2) atoms. The Y(5)-Ni(1) bond length is 3.14 Å. Both Y(5)-Ni(2) bond lengths are 2.80 Å. There are two shorter (3.19 Å) and one longer (3.35 Å) Y(5)-Te(2) bond length. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to one Y(3), one Y(4), one Y(5), two equivalent Y(1), two equivalent Y(2), and two equivalent Ni(2) atoms. Both Ni(1)-Ni(2) bond lengths are 2.69 Å. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to one Y(1), one Y(2), one Y(4), two equivalent Y(3), two equivalent Y(5), and two equivalent Ni(1) atoms. There are two inequivalent Te sites. In the first Te site, Te(2) is bonded in a 8-coordinate geometry to one Y(4), two equivalent Y(1), two equivalent Y(2), and three equivalent Y(5) atoms. In the second Te site, Te(1) is bonded to one Y(1), one Y(2), two equivalent Y(4), and three equivalent Y(3) atoms to form distorted edge-sharing TeY7 pentagonal bipyramids.