Materials Data on LaSiPt3 by Materials Project
LaPt3Si crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. La2+ is bonded to twelve Pt2- atoms to form a mixture of distorted corner and face-sharing LaPt12 cuboctahedra. There are a spread of La–Pt bond distances ranging from 3.02–3.52 Å. There are two inequivalent Pt2- sites. In the first Pt2- site, Pt2- is bonded in a distorted bent 120 degrees geometry to four equivalent La2+ and two equivalent Si4+ atoms. Both Pt–Si bond lengths are 2.41 Å. In the second Pt2- site, Pt2- is bonded in a 1-coordinate geometry to four equivalent La2+ and one Si4+ atom. The Pt–Si bond length is 2.33 Å. Si4+ is bonded in a 5-coordinate geometry to five Pt2- atoms.
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