Materials Data on PrTlSe2 by Materials Project
TlPrSe2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Pr3+ is bonded to six equivalent Se2- atoms to form PrSe6 octahedra that share corners with six equivalent TlSe6 octahedra, edges with six equivalent PrSe6 octahedra, and edges with six equivalent TlSe6 octahedra. The corner-sharing octahedral tilt angles are 9°. All Pr–Se bond lengths are 3.00 Å. Tl1+ is bonded to six equivalent Se2- atoms to form TlSe6 octahedra that share corners with six equivalent PrSe6 octahedra, edges with six equivalent PrSe6 octahedra, and edges with six equivalent TlSe6 octahedra. The corner-sharing octahedral tilt angles are 9°. All Tl–Se bond lengths are 3.37 Å. Se2- is bonded to three equivalent Pr3+ and three equivalent Tl1+ atoms to form a mixture of edge and corner-sharing SePr3Tl3 octahedra. The corner-sharing octahedral tilt angles are 0°.