Pr3Cr is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Pr(1), four equivalent Pr(2), and four equivalent Cr(1) atoms to form distorted PrPr8Cr4 cuboctahedra that share corners with twelve equivalent Pr(1)Pr8Cr4 cuboctahedra, edges with eight equivalent Pr(1)Pr8Cr4 cuboctahedra, edges with eight equivalent Cr(1)Pr12 cuboctahedra, faces with four equivalent Cr(1)Pr12 cuboctahedra, and faces with ten equivalent Pr(1)Pr8Cr4 cuboctahedra. In the second Pr site, Pr(2) is bonded in a distorted square co-planar geometry to eight equivalent Pr(1) and four equivalent Cr(1) atoms. Cr(1) is bonded to four equivalent Pr(2) and eight equivalent Pr(1) atoms to form CrPr12 cuboctahedra that share corners with four equivalent Cr(1)Pr12 cuboctahedra, edges with eight equivalent Cr(1)Pr12 cuboctahedra, edges with sixteen equivalent Pr(1)Pr8Cr4 cuboctahedra, faces with four equivalent Cr(1)Pr12 cuboctahedra, and faces with eight equivalent Pr(1)Pr8Cr4 cuboctahedra.
Pr3Cr is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Pr(1), four equivalent Pr(2), and four equivalent Cr(1) atoms to form distorted PrPr8Cr4 cuboctahedra that share corners with twelve equivalent Pr(1)Pr8Cr4 cuboctahedra, edges with eight equivalent Pr(1)Pr8Cr4 cuboctahedra, edges with eight equivalent Cr(1)Pr12 cuboctahedra, faces with four equivalent Cr(1)Pr12 cuboctahedra, and faces with ten equivalent Pr(1)Pr8Cr4 cuboctahedra. All Pr(1)-Pr(1) bond lengths are 3.44 Å. All Pr(1)-Pr(2) bond lengths are 3.57 Å. All Pr(1)-Cr(1) bond lengths are 3.57 Å. In the second Pr site, Pr(2) is bonded in a distorted square co-planar geometry to eight equivalent Pr(1) and four equivalent Cr(1) atoms. All Pr(2)-Cr(1) bond lengths are 3.44 Å. Cr(1) is bonded to four equivalent Pr(2) and eight equivalent Pr(1) atoms to form CrPr12 cuboctahedra that share corners with four equivalent Cr(1)Pr12 cuboctahedra, edges with eight equivalent Cr(1)Pr12 cuboctahedra, edges with sixteen equivalent Pr(1)Pr8Cr4 cuboctahedra, faces with four equivalent Cr(1)Pr12 cuboctahedra, and faces with eight equivalent Pr(1)Pr8Cr4 cuboctahedra.