PrSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Pr(1) is bonded to twelve Si(1,1) atoms to form a mixture of face and edge-sharing PrSi12 cuboctahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Si(1) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Si(1) atoms. In the third Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Si(1) atoms.
PrSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Pr(1) is bonded to twelve Si(1,1) atoms to form a mixture of face and edge-sharing PrSi12 cuboctahedra. There are four shorter (3.10 Å) and eight longer (3.28 Å) Pr(1)-Si(1,1) bond lengths. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Si(1) atoms. There is one shorter (2.33 Å) and two longer (2.41 Å) Si(1)-Si(1) bond lengths. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Si(1) atoms. There are two shorter (3.10 Å) and four longer (3.28 Å) Si(1)-Pr(1) bond lengths. There is one shorter (2.33 Å) and two longer (2.41 Å) Si(1)-Si(1) bond lengths. In the third Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Si(1) atoms. There is one shorter (2.33 Å) and two longer (2.41 Å) Si(1)-Si(1) bond lengths.