Materials Data on Tb2Al by Materials Project

Tb2Al is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 5-coordinate geometry to five equivalent Al atoms. There are a spread of Tb–Al bond distances ranging from 3.07–3.43 Å. In the second Tb site, Tb is bonded in a 3-coordinate geometry to five equivalent Al atoms. There are a spread of Tb–Al bond distances ranging from 3.17–3.55 Å. Al is bonded in a 10-coordinate geometry to ten Tb atoms.