Materials Data on MgSeO3 by Materials Project
MgSeO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Mg2+ is bonded to six O2- atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 50–54°. There are a spread of Mg–O bond distances ranging from 2.12–2.21 Å. Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.75 Å) and two longer (1.76 Å) Se–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mg2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to two equivalent Mg2+ and one Se4+ atom.