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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on LaSb2Au by Materials Project

LaAuSb2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. La3+ is bonded in a 8-coordinate geometry to eight Sb3- atoms. There are four shorter (3.29 Å) and four longer (3.44 Å) La–Sb bond lengths. Au3+ is bonded to four equivalent Sb3- atoms to form a mixture of edge and corner-sharing AuSb4 tetrahedra. All Au–Sb bond lengths are 2.89 Å. There are two inequivalent Sb3- sites. In the first Sb3- site, Sb3- is bonded in a 8-coordinate geometry to four equivalent La3+ and four equivalent Sb3- atoms. All Sb–Sb bond lengths are 3.18 Å. In the second Sb3- site, Sb3- is bonded in a 8-coordinate geometry to four equivalent La3+ and four equivalent Au3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaSb2Au by Materials Project

LaAuSb2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. La3+ is bonded in a distorted hexagonal planar geometry to six Sb3- atoms. There are a spread of La–Sb bond distances ranging from 3.24–3.27 Å. Au3+ is bonded in a distorted hexagonal planar geometry to six Sb3- atoms. There are four shorter (3.24 Å) and two longer (3.25 Å) Au–Sb bond lengths. There are two inequivalent Sb3- sites. In the first Sb3- site, Sb3- is bonded in a 6-coordinate geometry to two equivalent La3+ and four equivalent Au3+ atoms. In the second Sb3- site, Sb3- is bonded in a 6-coordinate geometry to four equivalent La3+ and two equivalent Au3+ atoms.

36 MATERIALS SCIENCE↗