Materials Data on Yb4Mg4Fe3H22 by Materials Project
Yb4Mg4Fe3H22 crystallizes in the cubic P-43m space group. The structure is three-dimensional. Mg2+ is bonded in a 1-coordinate geometry to four H1- atoms. There is one shorter (1.84 Å) and three longer (2.02 Å) Mg–H bond length. Yb2+ is bonded in a 12-coordinate geometry to twelve H1- atoms. There are a spread of Yb–H bond distances ranging from 2.36–2.71 Å. Fe2+ is bonded in an octahedral geometry to six H1- atoms. All Fe–H bond lengths are 1.58 Å. There are three inequivalent H1- sites. In the first H1- site, H1- is bonded in a distorted single-bond geometry to two equivalent Yb2+ and one Fe2+ atom. In the second H1- site, H1- is bonded in a distorted T-shaped geometry to two equivalent Mg2+, two equivalent Yb2+, and one Fe2+ atom. In the third H1- site, H1- is bonded to one Mg2+ and three equivalent Yb2+ atoms to form distorted edge-sharing HYb3Mg tetrahedra.