TaCr3S8 is trigonal omega-derived structured and crystallizes in the monoclinic C2/m space group. Ta(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form TaS6 octahedra that share edges with two equivalent Cr(2)S6 octahedra and edges with four equivalent Cr(1)S6 octahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form CrS6 octahedra that share edges with two equivalent Ta(1)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Cr(2)S6 octahedra. In the second Cr site, Cr(2) is bonded to two equivalent S(3) and four equivalent S(1) atoms to form CrS6 octahedra that share edges with two equivalent Ta(1)S6 octahedra and edges with four equivalent Cr(1)S6 octahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded in a distorted T-shaped geometry to one Ta(1), one Cr(1), and one Cr(2) atom. In the second S site, S(2) is bonded in a distorted T-shaped geometry to one Ta(1) and two equivalent Cr(1) atoms. In the third S site, S(3) is bonded in a distorted T-shaped geometry to one Cr(2) and two equivalent Cr(1) atoms.
TaCr3S8 is trigonal omega-derived structured and crystallizes in the monoclinic C2/m space group. Ta(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form TaS6 octahedra that share edges with two equivalent Cr(2)S6 octahedra and edges with four equivalent Cr(1)S6 octahedra. Both Ta(1)-S(2) bond lengths are 2.45 Å. All Ta(1)-S(1) bond lengths are 2.45 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form CrS6 octahedra that share edges with two equivalent Ta(1)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Cr(2)S6 octahedra. Both Cr(1)-S(1) bond lengths are 2.39 Å. Both Cr(1)-S(2) bond lengths are 2.39 Å. Both Cr(1)-S(3) bond lengths are 2.37 Å. In the second Cr site, Cr(2) is bonded to two equivalent S(3) and four equivalent S(1) atoms to form CrS6 octahedra that share edges with two equivalent Ta(1)S6 octahedra and edges with four equivalent Cr(1)S6 octahedra. Both Cr(2)-S(3) bond lengths are 2.37 Å. All Cr(2)-S(1) bond lengths are 2.39 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a distorted T-shaped geometry to one Ta(1), one Cr(1), and one Cr(2) atom. In the second S site, S(2) is bonded in a distorted T-shaped geometry to one Ta(1) and two equivalent Cr(1) atoms. In the third S site, S(3) is bonded in a distorted T-shaped geometry to one Cr(2) and two equivalent Cr(1) atoms.