LaPt3Si is Pb(Zr_(1-x)Ti_x)O3 structured and crystallizes in the tetragonal P4mm space group. La(1) is bonded in a 16-coordinate geometry to four equivalent Pt(2), eight equivalent Pt(1), and four equivalent Si(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted bent 120 degrees geometry to four equivalent La(1) and two equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to four equivalent La(1) and one Si(1) atom. Si(1) is bonded in a 5-coordinate geometry to four equivalent La(1), one Pt(2), and four equivalent Pt(1) atoms.
LaPt3Si is Pb(Zr_(1-x)Ti_x)O3 structured and crystallizes in the tetragonal P4mm space group. La(1) is bonded in a 16-coordinate geometry to four equivalent Pt(2), eight equivalent Pt(1), and four equivalent Si(1) atoms. All La(1)-Pt(2) bond lengths are 3.04 Å. All La(1)-Pt(1) bond lengths are 3.42 Å. All La(1)-Si(1) bond lengths are 3.30 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted bent 120 degrees geometry to four equivalent La(1) and two equivalent Si(1) atoms. Both Pt(1)-Si(1) bond lengths are 2.40 Å. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to four equivalent La(1) and one Si(1) atom. The Pt(2)-Si(1) bond length is 2.31 Å. Si(1) is bonded in a 5-coordinate geometry to four equivalent La(1), one Pt(2), and four equivalent Pt(1) atoms.