Materials Data on KPrTe2 by Materials Project
KPrTe2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. K1+ is bonded to six equivalent Te2- atoms to form KTe6 octahedra that share corners with six equivalent PrTe6 octahedra, edges with six equivalent KTe6 octahedra, and edges with six equivalent PrTe6 octahedra. The corner-sharing octahedral tilt angles are 8°. All K–Te bond lengths are 3.57 Å. Pr3+ is bonded to six equivalent Te2- atoms to form PrTe6 octahedra that share corners with six equivalent KTe6 octahedra, edges with six equivalent KTe6 octahedra, and edges with six equivalent PrTe6 octahedra. The corner-sharing octahedral tilt angles are 8°. All Pr–Te bond lengths are 3.23 Å. Te2- is bonded to three equivalent K1+ and three equivalent Pr3+ atoms to form a mixture of edge and corner-sharing TeK3Pr3 octahedra. The corner-sharing octahedral tilt angles are 0°.