La3(Pd10P3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to four equivalent Pd(1) and twelve equivalent Pd(2) atoms to form distorted LaPd16 tetrahedra that share edges with six equivalent La(1)Pd16 tetrahedra and faces with four equivalent La(2)P6Pd12 cuboctahedra. In the second La site, La(2) is bonded to twelve equivalent Pd(2) and six equivalent P(1) atoms to form distorted face-sharing LaP6Pd12 cuboctahedra. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 4-coordinate geometry to one La(1), six equivalent Pd(2), and three equivalent P(1) atoms. In the second Pd site, Pd(2) is bonded in a 14-coordinate geometry to one La(2), two equivalent La(1), four equivalent Pd(1), five equivalent Pd(2), and two equivalent P(1) atoms. P(1) is bonded in a 9-coordinate geometry to one La(2), four equivalent Pd(1), and four equivalent Pd(2) atoms.
La3(Pd10P3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to four equivalent Pd(1) and twelve equivalent Pd(2) atoms to form distorted LaPd16 tetrahedra that share edges with six equivalent La(1)Pd16 tetrahedra and faces with four equivalent La(2)P6Pd12 cuboctahedra. All La(1)-Pd(1) bond lengths are 2.91 Å. All La(1)-Pd(2) bond lengths are 3.36 Å. In the second La site, La(2) is bonded to twelve equivalent Pd(2) and six equivalent P(1) atoms to form distorted face-sharing LaP6Pd12 cuboctahedra. All La(2)-Pd(2) bond lengths are 3.03 Å. All La(2)-P(1) bond lengths are 3.25 Å. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 4-coordinate geometry to one La(1), six equivalent Pd(2), and three equivalent P(1) atoms. All Pd(1)-Pd(2) bond lengths are 3.07 Å. All Pd(1)-P(1) bond lengths are 2.50 Å. In the second Pd site, Pd(2) is bonded in a 14-coordinate geometry to one La(2), two equivalent La(1), four equivalent Pd(1), five equivalent Pd(2), and two equivalent P(1) atoms. There is one shorter (2.67 Å) and four longer (3.03 Å) Pd(2)-Pd(2) bond lengths. Both Pd(2)-P(1) bond lengths are 2.41 Å. P(1) is bonded in a 9-coordinate geometry to one La(2), four equivalent Pd(1), and four equivalent Pd(2) atoms.