CaMg6W crystallizes in the tetragonal P4/mmm space group. Ca(1) is bonded to four equivalent Mg(1) and eight equivalent Mg(2) atoms to form CaMg12 cuboctahedra that share corners with four equivalent Ca(1)Mg12 cuboctahedra, corners with eight equivalent W(1)Mg12 cuboctahedra, edges with eight equivalent Mg(1)Ca2Mg8W2 cuboctahedra, faces with two equivalent Ca(1)Mg12 cuboctahedra, faces with four equivalent Mg(1)Ca2Mg8W2 cuboctahedra, and faces with four equivalent W(1)Mg12 cuboctahedra. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Ca(1), eight equivalent Mg(2), and two equivalent W(1) atoms to form distorted MgCa2Mg8W2 cuboctahedra that share corners with twelve equivalent Mg(1)Ca2Mg8W2 cuboctahedra, edges with four equivalent Ca(1)Mg12 cuboctahedra, edges with four equivalent W(1)Mg12 cuboctahedra, faces with two equivalent Ca(1)Mg12 cuboctahedra, faces with two equivalent W(1)Mg12 cuboctahedra, and faces with six equivalent Mg(1)Ca2Mg8W2 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Ca(1), four equivalent Mg(1), and two equivalent W(1) atoms. W(1) is bonded to four equivalent Mg(1) and eight equivalent Mg(2) atoms to form WMg12 cuboctahedra that share corners with four equivalent W(1)Mg12 cuboctahedra, corners with eight equivalent Ca(1)Mg12 cuboctahedra, edges with eight equivalent Mg(1)Ca2Mg8W2 cuboctahedra, faces with two equivalent W(1)Mg12 cuboctahedra, faces with four equivalent Ca(1)Mg12 cuboctahedra, and faces with four equivalent Mg(1)Ca2Mg8W2 cuboctahedra.
CaMg6W crystallizes in the tetragonal P4/mmm space group. Ca(1) is bonded to four equivalent Mg(1) and eight equivalent Mg(2) atoms to form CaMg12 cuboctahedra that share corners with four equivalent Ca(1)Mg12 cuboctahedra, corners with eight equivalent W(1)Mg12 cuboctahedra, edges with eight equivalent Mg(1)Ca2Mg8W2 cuboctahedra, faces with two equivalent Ca(1)Mg12 cuboctahedra, faces with four equivalent Mg(1)Ca2Mg8W2 cuboctahedra, and faces with four equivalent W(1)Mg12 cuboctahedra. All Ca(1)-Mg(1) bond lengths are 3.15 Å. All Ca(1)-Mg(2) bond lengths are 3.29 Å. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Ca(1), eight equivalent Mg(2), and two equivalent W(1) atoms to form distorted MgCa2Mg8W2 cuboctahedra that share corners with twelve equivalent Mg(1)Ca2Mg8W2 cuboctahedra, edges with four equivalent Ca(1)Mg12 cuboctahedra, edges with four equivalent W(1)Mg12 cuboctahedra, faces with two equivalent Ca(1)Mg12 cuboctahedra, faces with two equivalent W(1)Mg12 cuboctahedra, and faces with six equivalent Mg(1)Ca2Mg8W2 cuboctahedra. All Mg(1)-Mg(2) bond lengths are 3.14 Å. Both Mg(1)-W(1) bond lengths are 3.15 Å. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Ca(1), four equivalent Mg(1), and two equivalent W(1) atoms. Both Mg(2)-W(1) bond lengths are 2.99 Å. W(1) is bonded to four equivalent Mg(1) and eight equivalent Mg(2) atoms to form WMg12 cuboctahedra that share corners with four equivalent W(1)Mg12 cuboctahedra, corners with eight equivalent Ca(1)Mg12 cuboctahedra, edges with eight equivalent Mg(1)Ca2Mg8W2 cuboctahedra, faces with two equivalent W(1)Mg12 cuboctahedra, faces with four equivalent Ca(1)Mg12 cuboctahedra, and faces with four equivalent Mg(1)Ca2Mg8W2 cuboctahedra.