Materials Data on Pr2Au by Materials Project
Pr2Au is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Pr sites. In the first Pr site, Pr is bonded in a 3-coordinate geometry to three equivalent Au atoms. There are one shorter (3.08 Å) and two longer (3.25 Å) Pr–Au bond lengths. In the second Pr site, Pr is bonded to four equivalent Au atoms to form a mixture of distorted edge and corner-sharing PrAu4 tetrahedra. There are a spread of Pr–Au bond distances ranging from 3.03–3.20 Å. Au is bonded in a 7-coordinate geometry to seven Pr atoms.
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