Sm3CuGeS7 crystallizes in the hexagonal P6_3 space group. Sm(1) is bonded in a 8-coordinate geometry to one S(2), three equivalent S(1), and four equivalent S(3) atoms. Cu(1) is bonded in a trigonal planar geometry to three equivalent S(3) atoms. Ge(1) is bonded in a tetrahedral geometry to one S(2) and three equivalent S(1) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Sm(1) and one Ge(1) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to three equivalent Sm(1) and one Ge(1) atom. In the third S site, S(3) is bonded in a 5-coordinate geometry to four equivalent Sm(1) and one Cu(1) atom.
Sm3CuGeS7 crystallizes in the hexagonal P6_3 space group. Sm(1) is bonded in a 8-coordinate geometry to one S(2), three equivalent S(1), and four equivalent S(3) atoms. The Sm(1)-S(2) bond length is 3.00 Å. There are a spread of Sm(1)-S(1) bond distances ranging from 2.85-3.03 Å. There are a spread of Sm(1)-S(3) bond distances ranging from 2.80-3.18 Å. Cu(1) is bonded in a trigonal planar geometry to three equivalent S(3) atoms. All Cu(1)-S(3) bond lengths are 2.24 Å. Ge(1) is bonded in a tetrahedral geometry to one S(2) and three equivalent S(1) atoms. The Ge(1)-S(2) bond length is 2.18 Å. All Ge(1)-S(1) bond lengths are 2.22 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Sm(1) and one Ge(1) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to three equivalent Sm(1) and one Ge(1) atom. In the third S site, S(3) is bonded in a 5-coordinate geometry to four equivalent Sm(1) and one Cu(1) atom.