Materials Data on Ba(AlGa)2 by Materials Project
Ba(GaAl)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba is bonded in a 8-coordinate geometry to eight equivalent Ga and eight equivalent Al atoms. All Ba–Ga bond lengths are 3.49 Å. All Ba–Al bond lengths are 3.62 Å. Ga is bonded in a 9-coordinate geometry to four equivalent Ba, one Ga, and four equivalent Al atoms. The Ga–Ga bond length is 2.75 Å. All Ga–Al bond lengths are 2.69 Å. Al is bonded to four equivalent Ba and four equivalent Ga atoms to form a mixture of distorted corner, edge, and face-sharing AlBa4Ga4 tetrahedra.