Materials Data on KCrS2 by Materials Project
KCrS2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six equivalent S2- atoms. All K–S bond lengths are 3.13 Å. Cr3+ is bonded to six equivalent S2- atoms to form edge-sharing CrS6 octahedra. All Cr–S bond lengths are 2.46 Å. S2- is bonded to three equivalent K1+ and three equivalent Cr3+ atoms to form a mixture of distorted corner and edge-sharing SK3Cr3 octahedra. The corner-sharing octahedral tilt angles are 0°.
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