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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↗
DOE OSTI2020

Materials Data on Eu3Au2 by Materials Project

Eu3Au2 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are three inequivalent Eu sites. In the first Eu site, Eu is bonded in an octahedral geometry to six equivalent Au atoms. All Eu–Au bond lengths are 3.23 Å. In the second Eu site, Eu is bonded in a 6-coordinate geometry to six equivalent Au atoms. There are three shorter (3.11 Å) and three longer (3.30 Å) Eu–Au bond lengths. In the third Eu site, Eu is bonded in a 5-coordinate geometry to five equivalent Au atoms. There are a spread of Eu–Au bond distances ranging from 3.15–3.48 Å. Au is bonded in a 8-coordinate geometry to eight Eu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuAu3 by Materials Project

EuAu3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Eu3+ is bonded in a distorted body-centered cubic geometry to fourteen Au1- atoms. There are eight shorter (3.07 Å) and six longer (3.54 Å) Eu–Au bond lengths. There are two inequivalent Au1- sites. In the first Au1- site, Au1- is bonded to four equivalent Eu3+ and four equivalent Au1- atoms to form a mixture of distorted edge, face, and corner-sharing AuEu4Au4 tetrahedra. All Au–Au bond lengths are 3.07 Å. In the second Au1- site, Au1- is bonded in a 8-coordinate geometry to six equivalent Eu3+ and eight equivalent Au1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuAu3 by Materials Project

EuAu3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Eu3+ is bonded to twelve equivalent Au1- atoms to form a mixture of face and corner-sharing EuAu12 cuboctahedra. There are six shorter (3.20 Å) and six longer (3.27 Å) Eu–Au bond lengths. Au1- is bonded in a 4-coordinate geometry to four equivalent Eu3+ atoms.

36 MATERIALS SCIENCE↗