KMg6Ga crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ga(1) atoms to form a mixture of face and corner-sharing KMg10Ga2 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Mg(4), and one Ga(1) atom. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent K(1), two equivalent Mg(4), and two equivalent Ga(1) atoms. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent K(1) and two equivalent Mg(4) atoms. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(4), and four equivalent Mg(2) atoms.
KMg6Ga crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ga(1) atoms to form a mixture of face and corner-sharing KMg10Ga2 cuboctahedra. Both K(1)-Mg(3) bond lengths are 3.34 Å. All K(1)-Mg(1) bond lengths are 3.35 Å. All K(1)-Mg(2) bond lengths are 3.32 Å. Both K(1)-Ga(1) bond lengths are 3.36 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Mg(4), and one Ga(1) atom. Both Mg(1)-Mg(4) bond lengths are 3.27 Å. The Mg(1)-Ga(1) bond length is 3.18 Å. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent K(1), two equivalent Mg(4), and two equivalent Ga(1) atoms. There is one shorter (3.26 Å) and one longer (3.44 Å) Mg(2)-Mg(4) bond length. Both Mg(2)-Ga(1) bond lengths are 3.12 Å. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent K(1) and two equivalent Mg(4) atoms. Both Mg(3)-Mg(4) bond lengths are 3.36 Å. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ga(1) atoms. Both Mg(4)-Ga(1) bond lengths are 3.33 Å. Ga(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(4), and four equivalent Mg(2) atoms.