Materials Data on LuAl by Materials Project
LuAl crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Lu sites. In the first Lu site, Lu is bonded in a 6-coordinate geometry to eight Al atoms. There are a spread of Lu–Al bond distances ranging from 2.99–3.50 Å. In the second Lu site, Lu is bonded in a 2-coordinate geometry to eight Al atoms. There are a spread of Lu–Al bond distances ranging from 3.00–3.35 Å. There are two inequivalent Al sites. In the first Al site, Al is bonded to eight Lu and four Al atoms to form a mixture of distorted edge, face, and corner-sharing AlLu8Al4 cuboctahedra. There are two shorter (2.71 Å) and two longer (2.76 Å) Al–Al bond lengths. In the second Al site, Al is bonded in a 10-coordinate geometry to eight Lu and two equivalent Al atoms.