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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Nd(GeRh)2 by Materials Project

NdRh2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Nd is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Ge atoms. All Nd–Rh bond lengths are 3.37 Å. All Nd–Ge bond lengths are 3.24 Å. Rh is bonded to four equivalent Nd and four equivalent Ge atoms to form a mixture of distorted edge, corner, and face-sharing RhNd4Ge4 tetrahedra. All Rh–Ge bond lengths are 2.48 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Nd, four equivalent Rh, and one Ge atom. The Ge–Ge bond length is 2.62 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nd3(GeRh)2 by Materials Project

Nd3(RhGe)2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Nd sites. In the first Nd site, Nd is bonded in a 9-coordinate geometry to four equivalent Rh and five Ge atoms. There are two shorter (3.15 Å) and two longer (3.17 Å) Nd–Rh bond lengths. There are a spread of Nd–Ge bond distances ranging from 3.06–3.37 Å. In the second Nd site, Nd is bonded in a 7-coordinate geometry to four equivalent Rh and five Ge atoms. There are a spread of Nd–Rh bond distances ranging from 2.94–3.23 Å. There are a spread of Nd–Ge bond distances ranging from 3.09–3.42 Å. Rh is bonded in a 9-coordinate geometry to six Nd and three Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.56–2.63 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to seven Nd and two equivalent Rh atoms. In the second Ge site, Ge is bonded to eight Nd and four equivalent Rh atoms to form a mixture of distorted corner, edge, and face-sharing GeNd8Rh4 cuboctahedra.

36 MATERIALS SCIENCE↗