Pr3Si crystallizes in the hexagonal P6_3/mmc space group. Pr(1) is bonded in a 2-coordinate geometry to four equivalent Si(1) atoms. Si(1) is bonded to twelve equivalent Pr(1) atoms to form a mixture of distorted face and corner-sharing SiPr12 cuboctahedra.
Pr3Si crystallizes in the hexagonal P6_3/mmc space group. Pr(1) is bonded in a 2-coordinate geometry to four equivalent Si(1) atoms. There are two shorter (3.17 Å) and two longer (3.58 Å) Pr(1)-Si(1) bond lengths. Si(1) is bonded to twelve equivalent Pr(1) atoms to form a mixture of distorted face and corner-sharing SiPr12 cuboctahedra.