Mn3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to eight Mn(1,1) and four equivalent Ge(1) atoms to form distorted MnMn8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Mn12 cuboctahedra; corners with fourteen Mn(1,1)Mn8Ge4 cuboctahedra; edges with six equivalent Ge(1)Mn12 cuboctahedra; edges with twelve Mn(1,1)Mn8Ge4 cuboctahedra; faces with four equivalent Ge(1)Mn12 cuboctahedra; and faces with sixteen Mn(1,1)Mn8Ge4 cuboctahedra. In the second Mn site, Mn(1) is bonded to eight Mn(1,1) and four equivalent Ge(1) atoms to form distorted MnMn8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Mn12 cuboctahedra; corners with fourteen Mn(1,1)Mn8Ge4 cuboctahedra; edges with six equivalent Ge(1)Mn12 cuboctahedra; edges with twelve Mn(1,1)Mn8Ge4 cuboctahedra; faces with four equivalent Ge(1)Mn12 cuboctahedra; and faces with sixteen Mn(1,1)Mn8Ge4 cuboctahedra. Ge(1) is bonded to twelve Mn(1,1) atoms to form GeMn12 cuboctahedra that share corners with six equivalent Ge(1)Mn12 cuboctahedra; corners with twelve Mn(1,1)Mn8Ge4 cuboctahedra; edges with eighteen Mn(1,1)Mn8Ge4 cuboctahedra; faces with eight equivalent Ge(1)Mn12 cuboctahedra; and faces with twelve Mn(1,1)Mn8Ge4 cuboctahedra.
Mn3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to eight Mn(1,1) and four equivalent Ge(1) atoms to form distorted MnMn8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Mn12 cuboctahedra; corners with fourteen Mn(1,1)Mn8Ge4 cuboctahedra; edges with six equivalent Ge(1)Mn12 cuboctahedra; edges with twelve Mn(1,1)Mn8Ge4 cuboctahedra; faces with four equivalent Ge(1)Mn12 cuboctahedra; and faces with sixteen Mn(1,1)Mn8Ge4 cuboctahedra. There are a spread of Mn(1)-Mn(1,1) bond distances ranging from 2.51-2.67 Å. There are two shorter (2.59 Å) and two longer (2.60 Å) Mn(1)-Ge(1) bond lengths. In the second Mn site, Mn(1) is bonded to eight Mn(1,1) and four equivalent Ge(1) atoms to form distorted MnMn8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Mn12 cuboctahedra; corners with fourteen Mn(1,1)Mn8Ge4 cuboctahedra; edges with six equivalent Ge(1)Mn12 cuboctahedra; edges with twelve Mn(1,1)Mn8Ge4 cuboctahedra; faces with four equivalent Ge(1)Mn12 cuboctahedra; and faces with sixteen Mn(1,1)Mn8Ge4 cuboctahedra. There is one shorter (2.51 Å) and one longer (2.67 Å) Mn(1)-Mn(1) bond length. There are two shorter (2.59 Å) and two longer (2.60 Å) Mn(1)-Ge(1) bond lengths. Ge(1) is bonded to twelve Mn(1,1) atoms to form GeMn12 cuboctahedra that share corners with six equivalent Ge(1)Mn12 cuboctahedra; corners with twelve Mn(1,1)Mn8Ge4 cuboctahedra; edges with eighteen Mn(1,1)Mn8Ge4 cuboctahedra; faces with eight equivalent Ge(1)Mn12 cuboctahedra; and faces with twelve Mn(1,1)Mn8Ge4 cuboctahedra.