PrY3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Pr(1) is bonded to twelve Y(1,1,1) atoms to form PrY12 cuboctahedra that share corners with six equivalent Pr(1)Y12 cuboctahedra; corners with twelve Y(1,1)Pr4Y8 cuboctahedra; edges with eighteen Y(1,1,1)Pr4Y8 cuboctahedra; faces with eight equivalent Pr(1)Y12 cuboctahedra; and faces with twelve Y(1,1,1)Pr4Y8 cuboctahedra. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded to four equivalent Pr(1) and eight equivalent Y(1) atoms to form YPr4Y8 cuboctahedra that share corners with four equivalent Pr(1)Y12 cuboctahedra; corners with fourteen Y(1,1)Pr4Y8 cuboctahedra; edges with six equivalent Pr(1)Y12 cuboctahedra; edges with twelve equivalent Y(1)Pr4Y8 cuboctahedra; faces with four equivalent Pr(1)Y12 cuboctahedra; and faces with sixteen Y(1,1,1)Pr4Y8 cuboctahedra. In the second Y site, Y(1) is bonded to four equivalent Pr(1) and eight Y(1,1,1) atoms to form YPr4Y8 cuboctahedra that share corners with four equivalent Pr(1)Y12 cuboctahedra; corners with fourteen Y(1,1)Pr4Y8 cuboctahedra; edges with six equivalent Pr(1)Y12 cuboctahedra; edges with twelve Y(1,1,1)Pr4Y8 cuboctahedra; faces with four equivalent Pr(1)Y12 cuboctahedra; and faces with sixteen Y(1,1,1)Pr4Y8 cuboctahedra. In the third Y site, Y(1) is bonded to four equivalent Pr(1) and eight equivalent Y(1) atoms to form YPr4Y8 cuboctahedra that share corners with four equivalent Pr(1)Y12 cuboctahedra; corners with fourteen Y(1,1)Pr4Y8 cuboctahedra; edges with six equivalent Pr(1)Y12 cuboctahedra; edges with twelve equivalent Y(1)Pr4Y8 cuboctahedra; faces with four equivalent Pr(1)Y12 cuboctahedra; and faces with sixteen Y(1,1,1)Pr4Y8 cuboctahedra.
PrY3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Pr(1) is bonded to twelve Y(1,1,1) atoms to form PrY12 cuboctahedra that share corners with six equivalent Pr(1)Y12 cuboctahedra; corners with twelve Y(1,1)Pr4Y8 cuboctahedra; edges with eighteen Y(1,1,1)Pr4Y8 cuboctahedra; faces with eight equivalent Pr(1)Y12 cuboctahedra; and faces with twelve Y(1,1,1)Pr4Y8 cuboctahedra. There are six shorter (3.66 Å) and six longer (3.69 Å) Pr(1)-Y(1,1,1) bond lengths. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded to four equivalent Pr(1) and eight equivalent Y(1) atoms to form YPr4Y8 cuboctahedra that share corners with four equivalent Pr(1)Y12 cuboctahedra; corners with fourteen Y(1,1)Pr4Y8 cuboctahedra; edges with six equivalent Pr(1)Y12 cuboctahedra; edges with twelve equivalent Y(1)Pr4Y8 cuboctahedra; faces with four equivalent Pr(1)Y12 cuboctahedra; and faces with sixteen Y(1,1,1)Pr4Y8 cuboctahedra. There are a spread of Y(1)-Y(1) bond distances ranging from 3.63-3.74 Å. In the second Y site, Y(1) is bonded to four equivalent Pr(1) and eight Y(1,1,1) atoms to form YPr4Y8 cuboctahedra that share corners with four equivalent Pr(1)Y12 cuboctahedra; corners with fourteen Y(1,1)Pr4Y8 cuboctahedra; edges with six equivalent Pr(1)Y12 cuboctahedra; edges with twelve Y(1,1,1)Pr4Y8 cuboctahedra; faces with four equivalent Pr(1)Y12 cuboctahedra; and faces with sixteen Y(1,1,1)Pr4Y8 cuboctahedra. There are a spread of Y(1)-Y(1,1) bond distances ranging from 3.63-3.74 Å. In the third Y site, Y(1) is bonded to four equivalent Pr(1) and eight equivalent Y(1) atoms to form YPr4Y8 cuboctahedra that share corners with four equivalent Pr(1)Y12 cuboctahedra; corners with fourteen Y(1,1)Pr4Y8 cuboctahedra; edges with six equivalent Pr(1)Y12 cuboctahedra; edges with twelve equivalent Y(1)Pr4Y8 cuboctahedra; faces with four equivalent Pr(1)Y12 cuboctahedra; and faces with sixteen Y(1,1,1)Pr4Y8 cuboctahedra.