Sm2CuTe4 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1), two equivalent Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. In the second Sm site, Sm(2) is bonded in a 9-coordinate geometry to one Cu(1), two equivalent Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. Cu(1) is bonded in a 7-coordinate geometry to one Sm(2), two equivalent Sm(1), one Te(2), one Te(3), and two equivalent Te(1) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), and two equivalent Cu(1) atoms. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), and one Cu(1) atom. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), and one Cu(1) atom. In the fourth Te site, Te(4) is bonded in a 4-coordinate geometry to two equivalent Sm(1) and two equivalent Sm(2) atoms.
Sm2CuTe4 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1), two equivalent Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. There is one shorter (3.25 Å) and one longer (3.46 Å) Sm(1)-Cu(1) bond length. There is one shorter (3.20 Å) and one longer (3.21 Å) Sm(1)-Te(1) bond length. There is one shorter (3.35 Å) and one longer (3.61 Å) Sm(1)-Te(2) bond length. There is one shorter (3.20 Å) and one longer (3.27 Å) Sm(1)-Te(3) bond length. There is one shorter (3.23 Å) and one longer (3.24 Å) Sm(1)-Te(4) bond length. In the second Sm site, Sm(2) is bonded in a 9-coordinate geometry to one Cu(1), two equivalent Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. The Sm(2)-Cu(1) bond length is 3.27 Å. There is one shorter (3.29 Å) and one longer (3.59 Å) Sm(2)-Te(1) bond length. There is one shorter (3.12 Å) and one longer (3.14 Å) Sm(2)-Te(2) bond length. There is one shorter (3.27 Å) and one longer (3.30 Å) Sm(2)-Te(3) bond length. There is one shorter (3.24 Å) and one longer (3.28 Å) Sm(2)-Te(4) bond length. Cu(1) is bonded in a 7-coordinate geometry to one Sm(2), two equivalent Sm(1), one Te(2), one Te(3), and two equivalent Te(1) atoms. The Cu(1)-Te(2) bond length is 2.63 Å. The Cu(1)-Te(3) bond length is 2.60 Å. There is one shorter (2.60 Å) and one longer (2.74 Å) Cu(1)-Te(1) bond length. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), and two equivalent Cu(1) atoms. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), and one Cu(1) atom. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), and one Cu(1) atom. In the fourth Te site, Te(4) is bonded in a 4-coordinate geometry to two equivalent Sm(1) and two equivalent Sm(2) atoms.