Ca3Y is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ca(1) is bonded to eight equivalent Ca(1) and four equivalent Y(1) atoms to form CaCa8Y4 cuboctahedra that share corners with twelve equivalent Ca(1)Ca8Y4 cuboctahedra, edges with eight equivalent Y(1)Ca12 cuboctahedra, edges with sixteen equivalent Ca(1)Ca8Y4 cuboctahedra, faces with four equivalent Y(1)Ca12 cuboctahedra, and faces with fourteen equivalent Ca(1)Ca8Y4 cuboctahedra. Y(1) is bonded to twelve equivalent Ca(1) atoms to form YCa12 cuboctahedra that share corners with twelve equivalent Y(1)Ca12 cuboctahedra, edges with twenty-four equivalent Ca(1)Ca8Y4 cuboctahedra, faces with six equivalent Y(1)Ca12 cuboctahedra, and faces with twelve equivalent Ca(1)Ca8Y4 cuboctahedra.
Ca3Y is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ca(1) is bonded to eight equivalent Ca(1) and four equivalent Y(1) atoms to form CaCa8Y4 cuboctahedra that share corners with twelve equivalent Ca(1)Ca8Y4 cuboctahedra, edges with eight equivalent Y(1)Ca12 cuboctahedra, edges with sixteen equivalent Ca(1)Ca8Y4 cuboctahedra, faces with four equivalent Y(1)Ca12 cuboctahedra, and faces with fourteen equivalent Ca(1)Ca8Y4 cuboctahedra. All Ca(1)-Ca(1) bond lengths are 3.83 Å. All Ca(1)-Y(1) bond lengths are 3.83 Å. Y(1) is bonded to twelve equivalent Ca(1) atoms to form YCa12 cuboctahedra that share corners with twelve equivalent Y(1)Ca12 cuboctahedra, edges with twenty-four equivalent Ca(1)Ca8Y4 cuboctahedra, faces with six equivalent Y(1)Ca12 cuboctahedra, and faces with twelve equivalent Ca(1)Ca8Y4 cuboctahedra.