Cr4AgAlS8 is Spinel-derived structured and crystallizes in the cubic F-43m space group. Cr(1) is bonded to three equivalent S(1) and three equivalent S(2) atoms to form CrS6 octahedra that share corners with three equivalent Ag(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, and edges with six equivalent Cr(1)S6 octahedra. Ag(1) is bonded to four equivalent S(2) atoms to form AgS4 tetrahedra that share corners with twelve equivalent Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 59°. Al(1) is bonded to four equivalent S(1) atoms to form AlS4 tetrahedra that share corners with twelve equivalent Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are two inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Cr(1) and one Al(1) atom to form distorted SAlCr3 trigonal pyramids that share corners with three equivalent S(1)AlCr3 trigonal pyramids, corners with nine equivalent S(2)Cr3Ag trigonal pyramids, and edges with three equivalent S(1)AlCr3 trigonal pyramids. In the second S site, S(2) is bonded to three equivalent Cr(1) and one Ag(1) atom to form distorted SCr3Ag trigonal pyramids that share corners with three equivalent S(2)Cr3Ag trigonal pyramids, corners with nine equivalent S(1)AlCr3 trigonal pyramids, and edges with three equivalent S(2)Cr3Ag trigonal pyramids.
Cr4AgAlS8 is Spinel-derived structured and crystallizes in the cubic F-43m space group. Cr(1) is bonded to three equivalent S(1) and three equivalent S(2) atoms to form CrS6 octahedra that share corners with three equivalent Ag(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, and edges with six equivalent Cr(1)S6 octahedra. All Cr(1)-S(1) bond lengths are 2.49 Å. All Cr(1)-S(2) bond lengths are 2.35 Å. Ag(1) is bonded to four equivalent S(2) atoms to form AgS4 tetrahedra that share corners with twelve equivalent Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 59°. All Ag(1)-S(2) bond lengths are 2.45 Å. Al(1) is bonded to four equivalent S(1) atoms to form AlS4 tetrahedra that share corners with twelve equivalent Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 58°. All Al(1)-S(1) bond lengths are 2.33 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Cr(1) and one Al(1) atom to form distorted SAlCr3 trigonal pyramids that share corners with three equivalent S(1)AlCr3 trigonal pyramids, corners with nine equivalent S(2)Cr3Ag trigonal pyramids, and edges with three equivalent S(1)AlCr3 trigonal pyramids. In the second S site, S(2) is bonded to three equivalent Cr(1) and one Ag(1) atom to form distorted SCr3Ag trigonal pyramids that share corners with three equivalent S(2)Cr3Ag trigonal pyramids, corners with nine equivalent S(1)AlCr3 trigonal pyramids, and edges with three equivalent S(2)Cr3Ag trigonal pyramids.