LaPtSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. La(1) is bonded to six Pt(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing LaSi6Pt6 cuboctahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent La(1) and three equivalent Si(1) atoms. In the second Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent La(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent La(1) and three Pt(1,1) atoms.
LaPtSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. La(1) is bonded to six Pt(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing LaSi6Pt6 cuboctahedra. There are two shorter (3.19 Å) and four longer (3.28 Å) La(1)-Pt(1,1) bond lengths. There are four shorter (3.24 Å) and two longer (3.27 Å) La(1)-Si(1) bond lengths. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent La(1) and three equivalent Si(1) atoms. All Pt(1)-Si(1) bond lengths are 2.45 Å. In the second Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent La(1) and three equivalent Si(1) atoms. All Pt(1)-Si(1) bond lengths are 2.45 Å. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent La(1) and three Pt(1,1) atoms.