Materials Data on Gd2MgSe4 by Materials Project
MgGd2Se4 crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. Mg2+ is bonded in a 4-coordinate geometry to eight equivalent Se2- atoms. There are four shorter (2.74 Å) and four longer (3.32 Å) Mg–Se bond lengths. Gd3+ is bonded in a 8-coordinate geometry to eight equivalent Se2- atoms. There are a spread of Gd–Se bond distances ranging from 2.85–3.29 Å. Se2- is bonded in a 6-coordinate geometry to two equivalent Mg2+ and four equivalent Gd3+ atoms.