Materials Data on ErAu3 by Materials Project
Au3Er is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. Er3+ is bonded to twelve Au1- atoms to form a mixture of corner, edge, and face-sharing ErAu12 cuboctahedra. There are a spread of Er–Au bond distances ranging from 2.99–3.09 Å. There are two inequivalent Au1- sites. In the first Au1- site, Au1- is bonded in a 12-coordinate geometry to four equivalent Er3+ atoms. In the second Au1- site, Au1- is bonded in a distorted see-saw-like geometry to four equivalent Er3+ atoms.
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