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AuTb is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tb is bonded in a body-centered cubic geometry to eight equivalent Au atoms. All Tb–Au bond lengths are 3.14 Å. Au is bonded in a body-centered cubic geometry to eight equivalent Tb atoms.
TbAu2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tb is bonded in a distorted q6 geometry to ten equivalent Au atoms. There are two shorter (3.05 Å) and eight longer (3.06 Å) Tb–Au bond lengths. Au is bonded in a 10-coordinate geometry to five equivalent Tb atoms.
AuTb is alpha-derived structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tb is bonded in a 7-coordinate geometry to seven equivalent Au atoms. There are a spread of Tb–Au bond distances ranging from 3.02–3.14 Å. Au is bonded in a 7-coordinate geometry to seven equivalent Tb atoms.
TbAu3 is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. Tb3+ is bonded to twelve Au1- atoms to form a mixture of edge, corner, and face-sharing TbAu12 cuboctahedra. There are a spread of Tb–Au bond distances ranging from 3.03–3.11 Å. There are two inequivalent Au1- sites. In the first Au1- site, Au1- is bonded in a distorted see-saw-like geometry to four equivalent Tb3+ atoms. In the second Au1- site, Au1- is bonded in a 12-coordinate geometry to four equivalent Tb3+ atoms.