CsNaMg6 crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(2) atoms to form CsNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)Cs2Mg10 cuboctahedra, corners with six equivalent Cs(1)Na2Mg10 cuboctahedra, edges with two equivalent Na(1)Cs2Mg10 cuboctahedra, faces with two equivalent Cs(1)Na2Mg10 cuboctahedra, and faces with two equivalent Na(1)Cs2Mg10 cuboctahedra. Na(1) is bonded to two equivalent Cs(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms to form NaCs2Mg10 cuboctahedra that share corners with four equivalent Cs(1)Na2Mg10 cuboctahedra, corners with six equivalent Na(1)Cs2Mg10 cuboctahedra, edges with two equivalent Cs(1)Na2Mg10 cuboctahedra, faces with two equivalent Cs(1)Na2Mg10 cuboctahedra, and faces with two equivalent Na(1)Cs2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to two equivalent Cs(1), two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), and two equivalent Mg(4) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent Cs(1), two equivalent Na(1), one Mg(4), and two equivalent Mg(1) atoms. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Na(1), two equivalent Mg(4), and four equivalent Mg(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Cs(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms.
CsNaMg6 crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded to two equivalent Na(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(2) atoms to form CsNa2Mg10 cuboctahedra that share corners with four equivalent Na(1)Cs2Mg10 cuboctahedra, corners with six equivalent Cs(1)Na2Mg10 cuboctahedra, edges with two equivalent Na(1)Cs2Mg10 cuboctahedra, faces with two equivalent Cs(1)Na2Mg10 cuboctahedra, and faces with two equivalent Na(1)Cs2Mg10 cuboctahedra. Both Cs(1)-Na(1) bond lengths are 3.40 Å. Both Cs(1)-Mg(4) bond lengths are 3.60 Å. All Cs(1)-Mg(1) bond lengths are 3.49 Å. All Cs(1)-Mg(2) bond lengths are 3.57 Å. Na(1) is bonded to two equivalent Cs(1), two equivalent Mg(3), four equivalent Mg(1), and four equivalent Mg(2) atoms to form NaCs2Mg10 cuboctahedra that share corners with four equivalent Cs(1)Na2Mg10 cuboctahedra, corners with six equivalent Na(1)Cs2Mg10 cuboctahedra, edges with two equivalent Cs(1)Na2Mg10 cuboctahedra, faces with two equivalent Cs(1)Na2Mg10 cuboctahedra, and faces with two equivalent Na(1)Cs2Mg10 cuboctahedra. Both Na(1)-Mg(3) bond lengths are 3.55 Å. There are two shorter (3.47 Å) and two longer (3.51 Å) Na(1)-Mg(1) bond lengths. All Na(1)-Mg(2) bond lengths are 3.51 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to two equivalent Cs(1), two equivalent Na(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), and two equivalent Mg(4) atoms. There is one shorter (3.36 Å) and one longer (3.44 Å) Mg(1)-Mg(1) bond length. Both Mg(1)-Mg(2) bond lengths are 3.48 Å. Both Mg(1)-Mg(3) bond lengths are 3.52 Å. Both Mg(1)-Mg(4) bond lengths are 3.48 Å. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent Cs(1), two equivalent Na(1), one Mg(4), and two equivalent Mg(1) atoms. The Mg(2)-Mg(4) bond length is 3.29 Å. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Na(1), two equivalent Mg(4), and four equivalent Mg(1) atoms. Both Mg(3)-Mg(4) bond lengths are 3.40 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Cs(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms.