Materials Data on EuAlAu by Materials Project
EuAuAl crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Eu is bonded in a 1-coordinate geometry to five equivalent Au and four equivalent Al atoms. There are a spread of Eu–Au bond distances ranging from 3.15–3.38 Å. There are a spread of Eu–Al bond distances ranging from 3.24–3.37 Å. Au is bonded in a 9-coordinate geometry to five equivalent Eu and four equivalent Al atoms. There are one shorter (2.76 Å) and three longer (2.77 Å) Au–Al bond lengths. Al is bonded to four equivalent Eu and four equivalent Au atoms to form a mixture of distorted corner, edge, and face-sharing AlEu4Au4 tetrahedra.
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