Ce3CuSiS7 crystallizes in the hexagonal P6_3 space group. Ce(1) is bonded in a 8-coordinate geometry to one S(3), three equivalent S(2), and four equivalent S(1) atoms. Cu(1) is bonded in a trigonal planar geometry to three equivalent S(1) atoms. Si(1) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(2) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to four equivalent Ce(1) and one Cu(1) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Ce(1) and one Si(1) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to three equivalent Ce(1) and one Si(1) atom.
Ce3CuSiS7 crystallizes in the hexagonal P6_3 space group. Ce(1) is bonded in a 8-coordinate geometry to one S(3), three equivalent S(2), and four equivalent S(1) atoms. The Ce(1)-S(3) bond length is 3.08 Å. There are a spread of Ce(1)-S(2) bond distances ranging from 2.89-3.04 Å. There are a spread of Ce(1)-S(1) bond distances ranging from 2.83-3.11 Å. Cu(1) is bonded in a trigonal planar geometry to three equivalent S(1) atoms. All Cu(1)-S(1) bond lengths are 2.25 Å. Si(1) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(2) atoms. The Si(1)-S(3) bond length is 2.11 Å. All Si(1)-S(2) bond lengths are 2.14 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to four equivalent Ce(1) and one Cu(1) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Ce(1) and one Si(1) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to three equivalent Ce(1) and one Si(1) atom.