Materials Data on HfPt3 by Materials Project

HfPt3 is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Hf sites. In the first Hf site, Hf is bonded to twelve Pt atoms to form a mixture of face and corner-sharing HfPt12 cuboctahedra. There are six shorter (2.86 Å) and six longer (2.87 Å) Hf–Pt bond lengths. In the second Hf site, Hf is bonded to twelve Pt atoms to form a mixture of face and corner-sharing HfPt12 cuboctahedra. All Hf–Pt bond lengths are 2.86 Å. There are two inequivalent Pt sites. In the first Pt site, Pt is bonded in a distorted see-saw-like geometry to four Hf atoms. In the second Pt site, Pt is bonded in a distorted square co-planar geometry to four Hf atoms.