Materials Data on Cr2CuS4 by Materials Project
CuCr2S4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Cr3+ is bonded to six equivalent S2- atoms to form CrS6 octahedra that share corners with six equivalent CuS4 tetrahedra and edges with six equivalent CrS6 octahedra. All Cr–S bond lengths are 2.39 Å. Cu2+ is bonded to four equivalent S2- atoms to form CuS4 tetrahedra that share corners with twelve equivalent CrS6 octahedra. The corner-sharing octahedral tilt angles are 57°. All Cu–S bond lengths are 2.27 Å. S2- is bonded to three equivalent Cr3+ and one Cu2+ atom to form a mixture of distorted edge and corner-sharing SCr3Cu trigonal pyramids.
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