KPrS2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. K(1) is bonded to six equivalent S(1) atoms to form KS6 octahedra that share corners with six equivalent Pr(1)S6 octahedra, edges with six equivalent K(1)S6 octahedra, and edges with six equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 9°. Pr(1) is bonded to six equivalent S(1) atoms to form PrS6 octahedra that share corners with six equivalent K(1)S6 octahedra, edges with six equivalent K(1)S6 octahedra, and edges with six equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 9°. S(1) is bonded to three equivalent K(1) and three equivalent Pr(1) atoms to form a mixture of corner and edge-sharing SK3Pr3 octahedra. The corner-sharing octahedra are not tilted.
KPrS2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. K(1) is bonded to six equivalent S(1) atoms to form KS6 octahedra that share corners with six equivalent Pr(1)S6 octahedra, edges with six equivalent K(1)S6 octahedra, and edges with six equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 9°. All K(1)-S(1) bond lengths are 3.23 Å. Pr(1) is bonded to six equivalent S(1) atoms to form PrS6 octahedra that share corners with six equivalent K(1)S6 octahedra, edges with six equivalent K(1)S6 octahedra, and edges with six equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 9°. All Pr(1)-S(1) bond lengths are 2.89 Å. S(1) is bonded to three equivalent K(1) and three equivalent Pr(1) atoms to form a mixture of corner and edge-sharing SK3Pr3 octahedra. The corner-sharing octahedra are not tilted.