PrOs4P12 crystallizes in the cubic Im-3 space group. Pr(1) is bonded to twelve equivalent P(1) atoms to form PrP12 cuboctahedra that share faces with eight equivalent Os(1)P6 octahedra. Os(1) is bonded to six equivalent P(1) atoms to form distorted OsP6 octahedra that share corners with six equivalent Os(1)P6 octahedra and faces with two equivalent Pr(1)P12 cuboctahedra. The corner-sharing octahedral tilt angles are 62°. P(1) is bonded in a 5-coordinate geometry to one Pr(1), two equivalent Os(1), and two equivalent P(1) atoms.
PrOs4P12 crystallizes in the cubic Im-3 space group. Pr(1) is bonded to twelve equivalent P(1) atoms to form PrP12 cuboctahedra that share faces with eight equivalent Os(1)P6 octahedra. All Pr(1)-P(1) bond lengths are 3.12 Å. Os(1) is bonded to six equivalent P(1) atoms to form distorted OsP6 octahedra that share corners with six equivalent Os(1)P6 octahedra and faces with two equivalent Pr(1)P12 cuboctahedra. The corner-sharing octahedral tilt angles are 62°. All Os(1)-P(1) bond lengths are 2.37 Å. P(1) is bonded in a 5-coordinate geometry to one Pr(1), two equivalent Os(1), and two equivalent P(1) atoms. There is one shorter (2.31 Å) and one longer (2.32 Å) P(1)-P(1) bond length.