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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Tm(GeRh)2 by Materials Project

Tm(RhGe)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tm is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Ge atoms. All Tm–Rh bond lengths are 3.30 Å. All Tm–Ge bond lengths are 3.17 Å. Rh is bonded to four equivalent Tm and four equivalent Ge atoms to form a mixture of distorted edge, face, and corner-sharing RhTm4Ge4 tetrahedra. All Rh–Ge bond lengths are 2.46 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Tm, four equivalent Rh, and one Ge atom. The Ge–Ge bond length is 2.48 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm3(GeRh)2 by Materials Project

Tm3(RhGe)2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 9-coordinate geometry to four equivalent Rh and five Ge atoms. There are two shorter (2.99 Å) and two longer (3.02 Å) Tm–Rh bond lengths. There are a spread of Tm–Ge bond distances ranging from 2.96–3.28 Å. In the second Tm site, Tm is bonded in a 7-coordinate geometry to four equivalent Rh and five Ge atoms. There are a spread of Tm–Rh bond distances ranging from 2.87–3.10 Å. There are a spread of Tm–Ge bond distances ranging from 2.96–3.33 Å. Rh is bonded in a 9-coordinate geometry to six Tm and three Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.53–2.59 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to seven Tm and two equivalent Rh atoms. In the second Ge site, Ge is bonded in a 12-coordinate geometry to eight Tm and four equivalent Rh atoms.

36 MATERIALS SCIENCE↗