Materials Data on Ba2AlGa3 by Materials Project
Ba2Ga3Al crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent Ba sites. In the first Ba site, Ba is bonded in a 12-coordinate geometry to nine Ga and three equivalent Al atoms. There are a spread of Ba–Ga bond distances ranging from 3.33–3.74 Å. There are one shorter (3.44 Å) and two longer (3.73 Å) Ba–Al bond lengths. In the second Ba site, Ba is bonded in a 12-coordinate geometry to nine Ga and three equivalent Al atoms. There are a spread of Ba–Ga bond distances ranging from 3.32–3.74 Å. There are two shorter (3.34 Å) and one longer (3.49 Å) Ba–Al bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to six Ba, three Ga, and one Al atom. All Ga–Ga bond lengths are 2.86 Å. The Ga–Al bond length is 2.79 Å. In the second Ga site, Ga is bonded in a 10-coordinate geometry to six Ba, two Ga, and two equivalent Al atoms. The Ga–Ga bond length is 2.82 Å. Both Ga–Al bond lengths are 2.85 Å. In the third Ga site, Ga is bonded in a 10-coordinate geometry to six Ba, three Ga, and one Al atom. The Ga–Al bond length is 2.84 Å. Al is bonded in a 10-coordinate geometry to six Ba and four Ga atoms.