HfCrCuS4 crystallizes in the orthorhombic Pnma space group. Hf(1) is bonded in a 6-coordinate geometry to one S(2), one S(3), and four equivalent S(1) atoms. Cr(1) is bonded in a distorted rectangular see-saw-like geometry to one S(2), one S(3), and two equivalent S(1) atoms. Cu(1) is bonded in a tetrahedral geometry to one S(2), one S(3), and two equivalent S(1) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to two equivalent Hf(1), one Cr(1), and one Cu(1) atom. In the second S site, S(2) is bonded in a distorted T-shaped geometry to one Hf(1), one Cr(1), and one Cu(1) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Hf(1), one Cr(1), and one Cu(1) atom.
HfCrCuS4 crystallizes in the orthorhombic Pnma space group. Hf(1) is bonded in a 6-coordinate geometry to one S(2), one S(3), and four equivalent S(1) atoms. The Hf(1)-S(2) bond length is 2.54 Å. The Hf(1)-S(3) bond length is 2.51 Å. All Hf(1)-S(1) bond lengths are 2.62 Å. Cr(1) is bonded in a distorted rectangular see-saw-like geometry to one S(2), one S(3), and two equivalent S(1) atoms. The Cr(1)-S(2) bond length is 2.21 Å. The Cr(1)-S(3) bond length is 2.20 Å. Both Cr(1)-S(1) bond lengths are 2.30 Å. Cu(1) is bonded in a tetrahedral geometry to one S(2), one S(3), and two equivalent S(1) atoms. The Cu(1)-S(2) bond length is 2.36 Å. The Cu(1)-S(3) bond length is 2.30 Å. Both Cu(1)-S(1) bond lengths are 2.28 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to two equivalent Hf(1), one Cr(1), and one Cu(1) atom. In the second S site, S(2) is bonded in a distorted T-shaped geometry to one Hf(1), one Cr(1), and one Cu(1) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Hf(1), one Cr(1), and one Cu(1) atom.