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HoPd is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ho is bonded in a body-centered cubic geometry to eight equivalent Pd atoms. All Ho–Pd bond lengths are 3.03 Å. Pd is bonded in a body-centered cubic geometry to eight equivalent Ho atoms.
HoPd is alpha-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ho is bonded in a 7-coordinate geometry to seven equivalent Pd atoms. There are a spread of Ho–Pd bond distances ranging from 2.88–3.01 Å. Pd is bonded in a 7-coordinate geometry to seven equivalent Ho atoms.