EuLaS2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Eu(1) is bonded to six equivalent S(1) atoms to form EuS6 octahedra that share corners with six equivalent La(1)S6 octahedra, edges with six equivalent Eu(1)S6 octahedra, and edges with six equivalent La(1)S6 octahedra. The corner-sharing octahedral tilt angles are 1°. La(1) is bonded to six equivalent S(1) atoms to form LaS6 octahedra that share corners with six equivalent Eu(1)S6 octahedra, edges with six equivalent Eu(1)S6 octahedra, and edges with six equivalent La(1)S6 octahedra. The corner-sharing octahedral tilt angles are 1°. S(1) is bonded to three equivalent Eu(1) and three equivalent La(1) atoms to form a mixture of edge and corner-sharing SLa3Eu3 octahedra. The corner-sharing octahedra are not tilted.
EuLaS2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Eu(1) is bonded to six equivalent S(1) atoms to form EuS6 octahedra that share corners with six equivalent La(1)S6 octahedra, edges with six equivalent Eu(1)S6 octahedra, and edges with six equivalent La(1)S6 octahedra. The corner-sharing octahedral tilt angles are 1°. All Eu(1)-S(1) bond lengths are 2.93 Å. La(1) is bonded to six equivalent S(1) atoms to form LaS6 octahedra that share corners with six equivalent Eu(1)S6 octahedra, edges with six equivalent Eu(1)S6 octahedra, and edges with six equivalent La(1)S6 octahedra. The corner-sharing octahedral tilt angles are 1°. All La(1)-S(1) bond lengths are 2.95 Å. S(1) is bonded to three equivalent Eu(1) and three equivalent La(1) atoms to form a mixture of edge and corner-sharing SLa3Eu3 octahedra. The corner-sharing octahedra are not tilted.