Pm3Zr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to eight equivalent Pm(1) and four equivalent Zr(1) atoms to form distorted PmPm8Zr4 cuboctahedra that share corners with four equivalent Zr(1)Pm12 cuboctahedra, corners with fourteen equivalent Pm(1)Pm8Zr4 cuboctahedra, edges with six equivalent Zr(1)Pm12 cuboctahedra, edges with twelve equivalent Pm(1)Pm8Zr4 cuboctahedra, faces with four equivalent Zr(1)Pm12 cuboctahedra, and faces with sixteen equivalent Pm(1)Pm8Zr4 cuboctahedra. Zr(1) is bonded to twelve equivalent Pm(1) atoms to form ZrPm12 cuboctahedra that share corners with six equivalent Zr(1)Pm12 cuboctahedra, corners with twelve equivalent Pm(1)Pm8Zr4 cuboctahedra, edges with eighteen equivalent Pm(1)Pm8Zr4 cuboctahedra, faces with eight equivalent Zr(1)Pm12 cuboctahedra, and faces with twelve equivalent Pm(1)Pm8Zr4 cuboctahedra.
Pm3Zr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to eight equivalent Pm(1) and four equivalent Zr(1) atoms to form distorted PmPm8Zr4 cuboctahedra that share corners with four equivalent Zr(1)Pm12 cuboctahedra, corners with fourteen equivalent Pm(1)Pm8Zr4 cuboctahedra, edges with six equivalent Zr(1)Pm12 cuboctahedra, edges with twelve equivalent Pm(1)Pm8Zr4 cuboctahedra, faces with four equivalent Zr(1)Pm12 cuboctahedra, and faces with sixteen equivalent Pm(1)Pm8Zr4 cuboctahedra. There are a spread of Pm(1)-Pm(1) bond distances ranging from 3.44-3.66 Å. There are two shorter (3.49 Å) and two longer (3.55 Å) Pm(1)-Zr(1) bond lengths. Zr(1) is bonded to twelve equivalent Pm(1) atoms to form ZrPm12 cuboctahedra that share corners with six equivalent Zr(1)Pm12 cuboctahedra, corners with twelve equivalent Pm(1)Pm8Zr4 cuboctahedra, edges with eighteen equivalent Pm(1)Pm8Zr4 cuboctahedra, faces with eight equivalent Zr(1)Pm12 cuboctahedra, and faces with twelve equivalent Pm(1)Pm8Zr4 cuboctahedra.