Materials Data on SrEuSeS by Materials Project
SrEuSeS is alpha Po-derived structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. Sr2+ is bonded to three equivalent Se2- and three equivalent S2- atoms to form SrSe3S3 octahedra that share corners with six equivalent EuSe3S3 octahedra, edges with six equivalent SrSe3S3 octahedra, and edges with six equivalent EuSe3S3 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. All Sr–Se bond lengths are 3.13 Å. All Sr–S bond lengths are 3.05 Å. Eu2+ is bonded to three equivalent Se2- and three equivalent S2- atoms to form EuSe3S3 octahedra that share corners with six equivalent SrSe3S3 octahedra, edges with six equivalent SrSe3S3 octahedra, and edges with six equivalent EuSe3S3 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. All Eu–Se bond lengths are 3.08 Å. All Eu–S bond lengths are 3.00 Å. Se2- is bonded to three equivalent Sr2+ and three equivalent Eu2+ atoms to form SeSr3Eu3 octahedra that share corners with six equivalent SSr3Eu3 octahedra, edges with six equivalent SeSr3Eu3 octahedra, and edges with six equivalent SSr3Eu3 octahedra. The corner-sharing octahedral tilt angles are 2°. S2- is bonded to three equivalent Sr2+ and three equivalent Eu2+ atoms to form SSr3Eu3 octahedra that share corners with six equivalent SeSr3Eu3 octahedra, edges with six equivalent SeSr3Eu3 octahedra, and edges with six equivalent SSr3Eu3 octahedra. The corner-sharing octahedral tilt angles are 2°.