Zn3Co is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Co(1) is bonded to twelve equivalent Zn(1) atoms to form CoZn12 cuboctahedra that share corners with six equivalent Co(1)Zn12 cuboctahedra, corners with twelve equivalent Zn(1)Zn8Co4 cuboctahedra, edges with eighteen equivalent Zn(1)Zn8Co4 cuboctahedra, faces with eight equivalent Co(1)Zn12 cuboctahedra, and faces with twelve equivalent Zn(1)Zn8Co4 cuboctahedra. Zn(1) is bonded to four equivalent Co(1) and eight equivalent Zn(1) atoms to form distorted ZnZn8Co4 cuboctahedra that share corners with four equivalent Co(1)Zn12 cuboctahedra, corners with fourteen equivalent Zn(1)Zn8Co4 cuboctahedra, edges with six equivalent Co(1)Zn12 cuboctahedra, edges with twelve equivalent Zn(1)Zn8Co4 cuboctahedra, faces with four equivalent Co(1)Zn12 cuboctahedra, and faces with sixteen equivalent Zn(1)Zn8Co4 cuboctahedra.
Zn3Co is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Co(1) is bonded to twelve equivalent Zn(1) atoms to form CoZn12 cuboctahedra that share corners with six equivalent Co(1)Zn12 cuboctahedra, corners with twelve equivalent Zn(1)Zn8Co4 cuboctahedra, edges with eighteen equivalent Zn(1)Zn8Co4 cuboctahedra, faces with eight equivalent Co(1)Zn12 cuboctahedra, and faces with twelve equivalent Zn(1)Zn8Co4 cuboctahedra. There are six shorter (2.56 Å) and six longer (2.62 Å) Co(1)-Zn(1) bond lengths. Zn(1) is bonded to four equivalent Co(1) and eight equivalent Zn(1) atoms to form distorted ZnZn8Co4 cuboctahedra that share corners with four equivalent Co(1)Zn12 cuboctahedra, corners with fourteen equivalent Zn(1)Zn8Co4 cuboctahedra, edges with six equivalent Co(1)Zn12 cuboctahedra, edges with twelve equivalent Zn(1)Zn8Co4 cuboctahedra, faces with four equivalent Co(1)Zn12 cuboctahedra, and faces with sixteen equivalent Zn(1)Zn8Co4 cuboctahedra. There are a spread of Zn(1)-Zn(1) bond distances ranging from 2.55-2.68 Å.