KMg6Sn crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Sn(1) atoms to form a mixture of corner and face-sharing KMg10Sn2 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and one Sn(1) atom. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mg(4), two equivalent Mg(1), and two equivalent Sn(1) atoms. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Mg(4), four equivalent Mg(1), and two equivalent Sn(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(3), and four equivalent Mg(2) atoms.
KMg6Sn crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Sn(1) atoms to form a mixture of corner and face-sharing KMg10Sn2 cuboctahedra. Both K(1)-Mg(4) bond lengths are 3.37 Å. There are two shorter (3.46 Å) and two longer (3.52 Å) K(1)-Mg(1) bond lengths. All K(1)-Mg(2) bond lengths are 3.34 Å. Both K(1)-Sn(1) bond lengths are 3.33 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and one Sn(1) atom. There is one shorter (3.28 Å) and one longer (3.37 Å) Mg(1)-Mg(1) bond length. Both Mg(1)-Mg(2) bond lengths are 3.26 Å. Both Mg(1)-Mg(3) bond lengths are 3.28 Å. Both Mg(1)-Mg(4) bond lengths are 3.20 Å. The Mg(1)-Sn(1) bond length is 3.35 Å. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mg(4), two equivalent Mg(1), and two equivalent Sn(1) atoms. The Mg(2)-Mg(4) bond length is 3.26 Å. Both Mg(2)-Sn(1) bond lengths are 3.18 Å. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Mg(4), four equivalent Mg(1), and two equivalent Sn(1) atoms. Both Mg(3)-Mg(4) bond lengths are 3.33 Å. Both Mg(3)-Sn(1) bond lengths are 3.38 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(3), and four equivalent Mg(2) atoms.