Materials Data on La2MgO4 by Materials Project
La2O3MgO is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Mg2+ is bonded to six O2- atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (1.97 Å) and two longer (2.24 Å) Mg–O bond lengths. La3+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.31–2.83 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Mg2+ and five equivalent La3+ atoms. In the second O2- site, O2- is bonded to two equivalent Mg2+ and four equivalent La3+ atoms to form a mixture of distorted corner, edge, and face-sharing OLa4Mg2 octahedra. The corner-sharing octahedral tilt angles are 0°.