(Mg)7C crystallizes in the hexagonal P-6m2 space group. The structure consists of one 02329_fluka atom inside a Mg framework. In the Mg framework, there are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(3) atoms. In the third Mg site, Mg(3) is bonded to six equivalent Mg(1) and six equivalent Mg(2) atoms to form a mixture of corner and face-sharing MgMg12 cuboctahedra.
(Mg)7C crystallizes in the hexagonal P-6m2 space group. The structure consists of one 02329_fluka atom inside a Mg framework. In the Mg framework, there are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3) atoms. Both Mg(1)-Mg(3) bond lengths are 3.01 Å. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(3) atoms. Both Mg(2)-Mg(3) bond lengths are 3.05 Å. In the third Mg site, Mg(3) is bonded to six equivalent Mg(1) and six equivalent Mg(2) atoms to form a mixture of corner and face-sharing MgMg12 cuboctahedra.