Materials Data on Tb4Ga12Ag by Materials Project

Abstract

Tb4AgGa12 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. Tb is bonded to twelve Ga atoms to form TbGa12 cuboctahedra that share corners with twelve equivalent TbGa12 cuboctahedra, faces with six equivalent TbGa12 cuboctahedra, and faces with two equivalent AgGa6 octahedra. There are six shorter (3.09 Å) and six longer (3.13 Å) Tb–Ga bond lengths. Ag is bonded to six equivalent Ga atoms to form AgGa6 octahedra that share faces with eight equivalent TbGa12 cuboctahedra. All Ag–Ga bond lengths are 2.67 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 12-coordinate geometry to four equivalent Tb and four equivalent Ga atoms. All Ga–Ga bond lengths are 2.77 Å. In the second Ga site, Ga is bonded in a 9-coordinate geometry to four equivalent Tb, one Ag, and four equivalent Ga atoms.