Materials Data on NaSmTe2 by Materials Project
NaSmTe2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Na1+ is bonded to six equivalent Te2- atoms to form NaTe6 octahedra that share corners with six equivalent SmTe6 octahedra, edges with six equivalent NaTe6 octahedra, and edges with six equivalent SmTe6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Na–Te bond lengths are 3.28 Å. Sm3+ is bonded to six equivalent Te2- atoms to form SmTe6 octahedra that share corners with six equivalent NaTe6 octahedra, edges with six equivalent NaTe6 octahedra, and edges with six equivalent SmTe6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Sm–Te bond lengths are 3.16 Å. Te2- is bonded to three equivalent Na1+ and three equivalent Sm3+ atoms to form a mixture of edge and corner-sharing TeNa3Sm3 octahedra. The corner-sharing octahedral tilt angles are 0°.