Y3Si is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Y(1) is bonded to eight equivalent Y(1) and four equivalent Si(1) atoms to form distorted YY8Si4 cuboctahedra that share corners with twelve equivalent Y(1)Y8Si4 cuboctahedra, edges with eight equivalent Si(1)Y12 cuboctahedra, edges with sixteen equivalent Y(1)Y8Si4 cuboctahedra, faces with four equivalent Si(1)Y12 cuboctahedra, and faces with fourteen equivalent Y(1)Y8Si4 cuboctahedra. Si(1) is bonded to twelve equivalent Y(1) atoms to form SiY12 cuboctahedra that share corners with twelve equivalent Si(1)Y12 cuboctahedra, edges with twenty-four equivalent Y(1)Y8Si4 cuboctahedra, faces with six equivalent Si(1)Y12 cuboctahedra, and faces with twelve equivalent Y(1)Y8Si4 cuboctahedra.
Y3Si is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Y(1) is bonded to eight equivalent Y(1) and four equivalent Si(1) atoms to form distorted YY8Si4 cuboctahedra that share corners with twelve equivalent Y(1)Y8Si4 cuboctahedra, edges with eight equivalent Si(1)Y12 cuboctahedra, edges with sixteen equivalent Y(1)Y8Si4 cuboctahedra, faces with four equivalent Si(1)Y12 cuboctahedra, and faces with fourteen equivalent Y(1)Y8Si4 cuboctahedra. All Y(1)-Y(1) bond lengths are 3.30 Å. All Y(1)-Si(1) bond lengths are 3.30 Å. Si(1) is bonded to twelve equivalent Y(1) atoms to form SiY12 cuboctahedra that share corners with twelve equivalent Si(1)Y12 cuboctahedra, edges with twenty-four equivalent Y(1)Y8Si4 cuboctahedra, faces with six equivalent Si(1)Y12 cuboctahedra, and faces with twelve equivalent Y(1)Y8Si4 cuboctahedra.