La3(PtZn)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent Pt(1) and four equivalent Pt(2) atoms to form edge-sharing LaPt6 octahedra. In the second La site, La(2) is bonded in a 12-coordinate geometry to two equivalent Pt(1), four equivalent Pt(2), and six equivalent Zn(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to one La(1), two equivalent La(2), and six equivalent Zn(1) atoms. In the second Pt site, Pt(2) is bonded in a 8-coordinate geometry to two equivalent La(1), four equivalent La(2), and two equivalent Zn(1) atoms. Zn(1) is bonded in a 4-coordinate geometry to three equivalent La(2), one Pt(2), and three equivalent Pt(1) atoms.
La3(PtZn)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent Pt(1) and four equivalent Pt(2) atoms to form edge-sharing LaPt6 octahedra. Both La(1)-Pt(1) bond lengths are 3.15 Å. All La(1)-Pt(2) bond lengths are 3.09 Å. In the second La site, La(2) is bonded in a 12-coordinate geometry to two equivalent Pt(1), four equivalent Pt(2), and six equivalent Zn(1) atoms. Both La(2)-Pt(1) bond lengths are 3.06 Å. All La(2)-Pt(2) bond lengths are 3.17 Å. There are four shorter (3.19 Å) and two longer (3.22 Å) La(2)-Zn(1) bond lengths. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to one La(1), two equivalent La(2), and six equivalent Zn(1) atoms. There are four shorter (2.63 Å) and two longer (2.81 Å) Pt(1)-Zn(1) bond lengths. In the second Pt site, Pt(2) is bonded in a 8-coordinate geometry to two equivalent La(1), four equivalent La(2), and two equivalent Zn(1) atoms. Both Pt(2)-Zn(1) bond lengths are 2.65 Å. Zn(1) is bonded in a 4-coordinate geometry to three equivalent La(2), one Pt(2), and three equivalent Pt(1) atoms.