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TmPt3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tm is bonded to twelve equivalent Pt atoms to form a mixture of corner and face-sharing TmPt12 cuboctahedra. All Tm–Pt bond lengths are 2.89 Å. Pt is bonded in a distorted square co-planar geometry to four equivalent Tm atoms.
TmPt2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Tm is bonded in a 12-coordinate geometry to twelve equivalent Pt atoms. All Tm–Pt bond lengths are 3.17 Å. Pt is bonded to six equivalent Tm and six equivalent Pt atoms to form a mixture of face, edge, and corner-sharing PtTm6Pt6 cuboctahedra. All Pt–Pt bond lengths are 2.71 Å.
Pt(Tm) crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Tm is bonded in a 7-coordinate geometry to seven equivalent Pt atoms. There are a spread of Tm–Pt bond distances ranging from 2.86–3.04 Å. Pt is bonded in a 7-coordinate geometry to seven equivalent Tm atoms.