Sm2CuGe6 crystallizes in the orthorhombic Amm2 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 Ge(2), two equivalent Ge(4), two equivalent Ge(5), and four equivalent Ge(6) atoms. In the second Sm site, Sm(2) is bonded in a 14-coordinate geometry to four equivalent Cu(1), two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(6), and four equivalent Ge(5) atoms. Cu(1) is bonded in a 9-coordinate geometry to four equivalent Sm(2), one Ge(5), two equivalent Ge(1), and two equivalent Ge(3) atoms. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Sm(2), two equivalent Cu(1), one Ge(2), and four equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to two equivalent Sm(1), one Ge(1), and four equivalent Ge(4) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Sm(2), two equivalent Cu(1), one Ge(4), and four equivalent Ge(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 7-coordinate geometry to two equivalent Sm(1), one Ge(3), and four equivalent Ge(2) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Cu(1), and two equivalent Ge(6) atoms. In the sixth Ge site, Ge(6) is bonded in a 8-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), and two equivalent Ge(5) atoms.
Sm2CuGe6 crystallizes in the orthorhombic Amm2 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 Ge(2), two equivalent Ge(4), two equivalent Ge(5), and four equivalent Ge(6) atoms. Both Sm(1)-Ge(2) bond lengths are 3.06 Å. Both Sm(1)-Ge(4) bond lengths are 3.06 Å. Both Sm(1)-Ge(5) bond lengths are 3.23 Å. All Sm(1)-Ge(6) bond lengths are 3.06 Å. In the second Sm site, Sm(2) is bonded in a 14-coordinate geometry to four equivalent Cu(1), two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(6), and four equivalent Ge(5) atoms. All Sm(2)-Cu(1) bond lengths are 3.16 Å. Both Sm(2)-Ge(1) bond lengths are 3.23 Å. Both Sm(2)-Ge(3) bond lengths are 3.25 Å. Both Sm(2)-Ge(6) bond lengths are 3.38 Å. All Sm(2)-Ge(5) bond lengths are 3.13 Å. Cu(1) is bonded in a 9-coordinate geometry to four equivalent Sm(2), one Ge(5), two equivalent Ge(1), and two equivalent Ge(3) atoms. The Cu(1)-Ge(5) bond length is 2.35 Å. Both Cu(1)-Ge(1) bond lengths are 2.44 Å. Both Cu(1)-Ge(3) bond lengths are 2.42 Å. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Sm(2), two equivalent Cu(1), one Ge(2), and four equivalent Ge(3) atoms. The Ge(1)-Ge(2) bond length is 2.49 Å. All Ge(1)-Ge(3) bond lengths are 2.92 Å. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to two equivalent Sm(1), one Ge(1), and four equivalent Ge(4) atoms. All Ge(2)-Ge(4) bond lengths are 2.92 Å. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Sm(2), two equivalent Cu(1), one Ge(4), and four equivalent Ge(1) atoms. The Ge(3)-Ge(4) bond length is 2.51 Å. In the fourth Ge site, Ge(4) is bonded in a 7-coordinate geometry to two equivalent Sm(1), one Ge(3), and four equivalent Ge(2) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Cu(1), and two equivalent Ge(6) atoms. Both Ge(5)-Ge(6) bond lengths are 2.56 Å. In the sixth Ge site, Ge(6) is bonded in a 8-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), and two equivalent Ge(5) atoms.