Dy3Pr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to eight Dy(1,1) and four equivalent Pr(1) atoms to form DyPr4Dy8 cuboctahedra that share corners with four equivalent Pr(1)Dy12 cuboctahedra; corners with fourteen Dy(1,1)Pr4Dy8 cuboctahedra; edges with six equivalent Pr(1)Dy12 cuboctahedra; edges with twelve Dy(1,1)Pr4Dy8 cuboctahedra; faces with four equivalent Pr(1)Dy12 cuboctahedra; and faces with sixteen Dy(1,1)Pr4Dy8 cuboctahedra. In the second Dy site, Dy(1) is bonded to eight equivalent Dy(1) and four equivalent Pr(1) atoms to form DyPr4Dy8 cuboctahedra that share corners with four equivalent Pr(1)Dy12 cuboctahedra; corners with fourteen Dy(1,1)Pr4Dy8 cuboctahedra; edges with six equivalent Pr(1)Dy12 cuboctahedra; edges with twelve equivalent Dy(1)Pr4Dy8 cuboctahedra; faces with four equivalent Pr(1)Dy12 cuboctahedra; and faces with sixteen Dy(1,1)Pr4Dy8 cuboctahedra. Pr(1) is bonded to twelve Dy(1,1) atoms to form PrDy12 cuboctahedra that share corners with six equivalent Pr(1)Dy12 cuboctahedra; corners with twelve Dy(1,1)Pr4Dy8 cuboctahedra; edges with eighteen Dy(1,1)Pr4Dy8 cuboctahedra; faces with eight equivalent Pr(1)Dy12 cuboctahedra; and faces with twelve Dy(1,1)Pr4Dy8 cuboctahedra.
Dy3Pr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to eight Dy(1,1) and four equivalent Pr(1) atoms to form DyPr4Dy8 cuboctahedra that share corners with four equivalent Pr(1)Dy12 cuboctahedra; corners with fourteen Dy(1,1)Pr4Dy8 cuboctahedra; edges with six equivalent Pr(1)Dy12 cuboctahedra; edges with twelve Dy(1,1)Pr4Dy8 cuboctahedra; faces with four equivalent Pr(1)Dy12 cuboctahedra; and faces with sixteen Dy(1,1)Pr4Dy8 cuboctahedra. There are a spread of Dy(1)-Dy(1,1) bond distances ranging from 3.58-3.71 Å. There are two shorter (3.62 Å) and two longer (3.66 Å) Dy(1)-Pr(1) bond lengths. In the second Dy site, Dy(1) is bonded to eight equivalent Dy(1) and four equivalent Pr(1) atoms to form DyPr4Dy8 cuboctahedra that share corners with four equivalent Pr(1)Dy12 cuboctahedra; corners with fourteen Dy(1,1)Pr4Dy8 cuboctahedra; edges with six equivalent Pr(1)Dy12 cuboctahedra; edges with twelve equivalent Dy(1)Pr4Dy8 cuboctahedra; faces with four equivalent Pr(1)Dy12 cuboctahedra; and faces with sixteen Dy(1,1)Pr4Dy8 cuboctahedra. There are two shorter (3.62 Å) and two longer (3.66 Å) Dy(1)-Pr(1) bond lengths. Pr(1) is bonded to twelve Dy(1,1) atoms to form PrDy12 cuboctahedra that share corners with six equivalent Pr(1)Dy12 cuboctahedra; corners with twelve Dy(1,1)Pr4Dy8 cuboctahedra; edges with eighteen Dy(1,1)Pr4Dy8 cuboctahedra; faces with eight equivalent Pr(1)Dy12 cuboctahedra; and faces with twelve Dy(1,1)Pr4Dy8 cuboctahedra.