Cr2AgCuS4 is Ilmenite-derived structured and crystallizes in the monoclinic Pm space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(2), one S(4), two equivalent S(1), and two equivalent S(3) atoms to form edge-sharing CrS6 octahedra. In the second Cr site, Cr(2) is bonded to one S(1), one S(3), two equivalent S(2), and two equivalent S(4) atoms to form edge-sharing CrS6 octahedra. Ag(1) is bonded in a distorted rectangular see-saw-like geometry to one S(2), one S(4), and two equivalent S(3) atoms. Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one S(1), one S(3), and two equivalent S(4) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Cr(2), two equivalent Cr(1), and one Cu(1) atom to form distorted SCr3Cu trigonal pyramids that share corners with four equivalent S(2)Cr3Ag tetrahedra and corners with two equivalent S(1)Cr3Cu trigonal pyramids. In the second S site, S(2) is bonded to one Cr(1), two equivalent Cr(2), and one Ag(1) atom to form distorted SCr3Ag tetrahedra that share corners with two equivalent S(2)Cr3Ag tetrahedra and corners with four equivalent S(1)Cr3Cu trigonal pyramids. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Cr(2), two equivalent Cr(1), two equivalent Ag(1), and one Cu(1) atom. In the fourth S site, S(4) is bonded in a 6-coordinate geometry to one Cr(1), two equivalent Cr(2), one Ag(1), and two equivalent Cu(1) atoms.
Cr2AgCuS4 is Ilmenite-derived structured and crystallizes in the monoclinic Pm space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(2), one S(4), two equivalent S(1), and two equivalent S(3) atoms to form edge-sharing CrS6 octahedra. The Cr(1)-S(2) bond length is 2.35 Å. The Cr(1)-S(4) bond length is 2.55 Å. Both Cr(1)-S(1) bond lengths are 2.41 Å. Both Cr(1)-S(3) bond lengths are 2.48 Å. In the second Cr site, Cr(2) is bonded to one S(1), one S(3), two equivalent S(2), and two equivalent S(4) atoms to form edge-sharing CrS6 octahedra. The Cr(2)-S(1) bond length is 2.42 Å. The Cr(2)-S(3) bond length is 2.41 Å. Both Cr(2)-S(2) bond lengths are 2.36 Å. Both Cr(2)-S(4) bond lengths are 2.46 Å. Ag(1) is bonded in a distorted rectangular see-saw-like geometry to one S(2), one S(4), and two equivalent S(3) atoms. The Ag(1)-S(2) bond length is 2.37 Å. The Ag(1)-S(4) bond length is 2.58 Å. Both Ag(1)-S(3) bond lengths are 2.61 Å. Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one S(1), one S(3), and two equivalent S(4) atoms. The Cu(1)-S(1) bond length is 2.27 Å. The Cu(1)-S(3) bond length is 2.52 Å. Both Cu(1)-S(4) bond lengths are 2.48 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Cr(2), two equivalent Cr(1), and one Cu(1) atom to form distorted SCr3Cu trigonal pyramids that share corners with four equivalent S(2)Cr3Ag tetrahedra and corners with two equivalent S(1)Cr3Cu trigonal pyramids. In the second S site, S(2) is bonded to one Cr(1), two equivalent Cr(2), and one Ag(1) atom to form distorted SCr3Ag tetrahedra that share corners with two equivalent S(2)Cr3Ag tetrahedra and corners with four equivalent S(1)Cr3Cu trigonal pyramids. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Cr(2), two equivalent Cr(1), two equivalent Ag(1), and one Cu(1) atom. In the fourth S site, S(4) is bonded in a 6-coordinate geometry to one Cr(1), two equivalent Cr(2), one Ag(1), and two equivalent Cu(1) atoms.