UMn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. U(1) is bonded to twelve equivalent Mn(1) atoms to form UMn12 cuboctahedra that share corners with twelve equivalent U(1)Mn12 cuboctahedra, edges with twenty-four equivalent Mn(1)U4Mn8 cuboctahedra, faces with six equivalent U(1)Mn12 cuboctahedra, and faces with twelve equivalent Mn(1)U4Mn8 cuboctahedra. Mn(1) is bonded to four equivalent U(1) and eight equivalent Mn(1) atoms to form MnU4Mn8 cuboctahedra that share corners with twelve equivalent Mn(1)U4Mn8 cuboctahedra, edges with eight equivalent U(1)Mn12 cuboctahedra, edges with sixteen equivalent Mn(1)U4Mn8 cuboctahedra, faces with four equivalent U(1)Mn12 cuboctahedra, and faces with fourteen equivalent Mn(1)U4Mn8 cuboctahedra.
UMn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. U(1) is bonded to twelve equivalent Mn(1) atoms to form UMn12 cuboctahedra that share corners with twelve equivalent U(1)Mn12 cuboctahedra, edges with twenty-four equivalent Mn(1)U4Mn8 cuboctahedra, faces with six equivalent U(1)Mn12 cuboctahedra, and faces with twelve equivalent Mn(1)U4Mn8 cuboctahedra. All U(1)-Mn(1) bond lengths are 2.70 Å. Mn(1) is bonded to four equivalent U(1) and eight equivalent Mn(1) atoms to form MnU4Mn8 cuboctahedra that share corners with twelve equivalent Mn(1)U4Mn8 cuboctahedra, edges with eight equivalent U(1)Mn12 cuboctahedra, edges with sixteen equivalent Mn(1)U4Mn8 cuboctahedra, faces with four equivalent U(1)Mn12 cuboctahedra, and faces with fourteen equivalent Mn(1)U4Mn8 cuboctahedra. All Mn(1)-Mn(1) bond lengths are 2.70 Å.