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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on BeGe3 by Materials Project

BeGe3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Be is bonded in a distorted square co-planar geometry to twelve Ge atoms. There are four shorter (2.78 Å) and eight longer (2.95 Å) Be–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent Be and eight Ge atoms to form a mixture of distorted face, edge, and corner-sharing GeBe4Ge8 cuboctahedra. There are four shorter (2.78 Å) and four longer (2.95 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a distorted square co-planar geometry to four equivalent Be and eight equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BeGe3 by Materials Project

BeGe3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Be is bonded to twelve equivalent Ge atoms to form BeGe12 cuboctahedra that share corners with twelve equivalent BeGe12 cuboctahedra, edges with twenty-four equivalent GeBe4Ge8 cuboctahedra, faces with six equivalent BeGe12 cuboctahedra, and faces with twelve equivalent GeBe4Ge8 cuboctahedra. All Be–Ge bond lengths are 2.89 Å. Ge is bonded to four equivalent Be and eight equivalent Ge atoms to form distorted GeBe4Ge8 cuboctahedra that share corners with twelve equivalent GeBe4Ge8 cuboctahedra, edges with eight equivalent BeGe12 cuboctahedra, edges with sixteen equivalent GeBe4Ge8 cuboctahedra, faces with four equivalent BeGe12 cuboctahedra, and faces with fourteen equivalent GeBe4Ge8 cuboctahedra. All Ge–Ge bond lengths are 2.89 Å.

36 MATERIALS SCIENCE↗