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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on EuAu5 by Materials Project

EuAu5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Eu3+ is bonded in a distorted hexagonal planar geometry to eighteen Au+0.60- atoms. There are six shorter (3.29 Å) and twelve longer (3.70 Å) Eu–Au bond lengths. There are two inequivalent Au+0.60- sites. In the first Au+0.60- site, Au+0.60- is bonded to four equivalent Eu3+ and eight Au+0.60- atoms to form a mixture of edge, corner, and face-sharing AuEu4Au8 cuboctahedra. There are four shorter (2.85 Å) and four longer (2.88 Å) Au–Au bond lengths. In the second Au+0.60- site, Au+0.60- is bonded in a 3-coordinate geometry to three equivalent Eu3+ and six equivalent Au+0.60- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Eu7Au3 by Materials Project

Eu7Au3 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. there are three inequivalent Eu sites. In the first Eu site, Eu is bonded in a 3-coordinate geometry to three equivalent Au atoms. All Eu–Au bond lengths are 3.13 Å. In the second Eu site, Eu is bonded in a distorted water-like geometry to two equivalent Au atoms. Both Eu–Au bond lengths are 3.13 Å. In the third Eu site, Eu is bonded in a distorted T-shaped geometry to three equivalent Au atoms. There are two shorter (3.15 Å) and one longer (3.22 Å) Eu–Au bond lengths. Au is bonded in a 6-coordinate geometry to six Eu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuAu2 by Materials Project

EuAu2 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Eu2+ is bonded in a 12-coordinate geometry to twelve equivalent Au1- atoms. There are a spread of Eu–Au bond distances ranging from 3.32–3.49 Å. Au1- is bonded in a 10-coordinate geometry to six equivalent Eu2+ and four equivalent Au1- atoms. There are a spread of Au–Au bond distances ranging from 2.82–3.00 Å.

36 MATERIALS SCIENCE↗