Materials Data on Tm4MgRh by Materials Project
MgTm4Rh crystallizes in the cubic F-43m space group. The structure is three-dimensional. Mg is bonded to three equivalent Mg and nine Tm atoms to form a mixture of face and corner-sharing MgTm9Mg3 cuboctahedra. All Mg–Mg bond lengths are 3.06 Å. There are a spread of Mg–Tm bond distances ranging from 3.27–3.51 Å. There are three inequivalent Tm sites. In the first Tm site, Tm is bonded in a 3-coordinate geometry to three equivalent Mg, three equivalent Tm, and three equivalent Rh atoms. All Tm–Tm bond lengths are 3.48 Å. All Tm–Rh bond lengths are 2.79 Å. In the second Tm site, Tm is bonded in a bent 150 degrees geometry to two equivalent Mg, four equivalent Tm, and two equivalent Rh atoms. All Tm–Tm bond lengths are 3.60 Å. Both Tm–Rh bond lengths are 2.79 Å. In the third Tm site, Tm is bonded in a 4-coordinate geometry to two equivalent Mg, ten Tm, and two equivalent Rh atoms. All Tm–Tm bond lengths are 3.57 Å. Both Tm–Rh bond lengths are 3.48 Å. Rh is bonded in a 6-coordinate geometry to nine Tm atoms.