Materials Data on CeAl3Au by Materials Project

CeAuAl3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to four equivalent Au and twelve Al atoms. All Ce–Au bond lengths are 3.40 Å. There are a spread of Ce–Al bond distances ranging from 3.21–3.57 Å. Au is bonded in a 5-coordinate geometry to four equivalent Ce and five Al atoms. There are one shorter (2.46 Å) and four longer (2.55 Å) Au–Al bond lengths. There are two inequivalent Al sites. In the first Al site, Al is bonded in a distorted single-bond geometry to four equivalent Ce and one Au atom. In the second Al site, Al is bonded in a distorted bent 120 degrees geometry to four equivalent Ce and two equivalent Au atoms.