Materials Data on Sm2TiMnO6 by Materials Project
Sm2MnTiO6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Sm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sm–O bond distances ranging from 2.30–2.85 Å. Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 34–37°. There are a spread of Ti–O bond distances ranging from 1.97–2.01 Å. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six equivalent TiO6 octahedra. The corner-sharing octahedra tilt angles range from 34–37°. There are two shorter (2.18 Å) and four longer (2.19 Å) Mn–O bond lengths. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Sm3+, one Ti4+, and one Mn2+ atom to form distorted corner-sharing OSm2TiMn trigonal pyramids. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Sm3+, one Ti4+, and one Mn2+ atom. In the third O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Sm3+, one Ti4+, and one Mn2+ atom.