Yb3Cu is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Yb(1) is bonded to eight equivalent Yb(1) and four equivalent Cu(1) atoms to form distorted YbYb8Cu4 cuboctahedra that share corners with twelve equivalent Yb(1)Yb8Cu4 cuboctahedra, edges with eight equivalent Cu(1)Yb12 cuboctahedra, edges with sixteen equivalent Yb(1)Yb8Cu4 cuboctahedra, faces with four equivalent Cu(1)Yb12 cuboctahedra, and faces with fourteen equivalent Yb(1)Yb8Cu4 cuboctahedra. Cu(1) is bonded to twelve equivalent Yb(1) atoms to form CuYb12 cuboctahedra that share corners with twelve equivalent Cu(1)Yb12 cuboctahedra, edges with twenty-four equivalent Yb(1)Yb8Cu4 cuboctahedra, faces with six equivalent Cu(1)Yb12 cuboctahedra, and faces with twelve equivalent Yb(1)Yb8Cu4 cuboctahedra.
Yb3Cu is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Yb(1) is bonded to eight equivalent Yb(1) and four equivalent Cu(1) atoms to form distorted YbYb8Cu4 cuboctahedra that share corners with twelve equivalent Yb(1)Yb8Cu4 cuboctahedra, edges with eight equivalent Cu(1)Yb12 cuboctahedra, edges with sixteen equivalent Yb(1)Yb8Cu4 cuboctahedra, faces with four equivalent Cu(1)Yb12 cuboctahedra, and faces with fourteen equivalent Yb(1)Yb8Cu4 cuboctahedra. All Yb(1)-Yb(1) bond lengths are 3.44 Å. All Yb(1)-Cu(1) bond lengths are 3.44 Å. Cu(1) is bonded to twelve equivalent Yb(1) atoms to form CuYb12 cuboctahedra that share corners with twelve equivalent Cu(1)Yb12 cuboctahedra, edges with twenty-four equivalent Yb(1)Yb8Cu4 cuboctahedra, faces with six equivalent Cu(1)Yb12 cuboctahedra, and faces with twelve equivalent Yb(1)Yb8Cu4 cuboctahedra.