KMg6Ga crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ga(1) atoms to form KMg10Ga2 cuboctahedra that share corners with four equivalent Mg(2)K2Mg10 cuboctahedra, corners with six equivalent K(1)Mg10Ga2 cuboctahedra, edges with two equivalent Mg(2)K2Mg10 cuboctahedra, faces with two equivalent K(1)Mg10Ga2 cuboctahedra, and faces with two equivalent Mg(2)K2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to two equivalent K(1), two equivalent Mg(2), two equivalent Mg(4), and two equivalent Ga(1) atoms. In the second Mg site, Mg(2) is bonded to two equivalent K(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form distorted MgK2Mg10 cuboctahedra that share corners with four equivalent K(1)Mg10Ga2 cuboctahedra, corners with six equivalent Mg(2)K2Mg10 cuboctahedra, edges with two equivalent K(1)Mg10Ga2 cuboctahedra, faces with two equivalent K(1)Mg10Ga2 cuboctahedra, and faces with two equivalent Mg(2)K2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Mg(2), two equivalent Mg(4), and one Ga(1) atom. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ga(1) atoms. Ga(1) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Mg(3), two equivalent Mg(4), and four equivalent Mg(1) atoms.
KMg6Ga crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ga(1) atoms to form KMg10Ga2 cuboctahedra that share corners with four equivalent Mg(2)K2Mg10 cuboctahedra, corners with six equivalent K(1)Mg10Ga2 cuboctahedra, edges with two equivalent Mg(2)K2Mg10 cuboctahedra, faces with two equivalent K(1)Mg10Ga2 cuboctahedra, and faces with two equivalent Mg(2)K2Mg10 cuboctahedra. Both K(1)-Mg(2) bond lengths are 3.42 Å. There are two shorter (3.33 Å) and two longer (3.46 Å) K(1)-Mg(1) bond lengths. All K(1)-Mg(3) bond lengths are 3.37 Å. Both K(1)-Ga(1) bond lengths are 3.33 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to two equivalent K(1), two equivalent Mg(2), two equivalent Mg(4), and two equivalent Ga(1) atoms. There is one shorter (3.32 Å) and one longer (3.47 Å) Mg(1)-Mg(2) bond length. Both Mg(1)-Mg(4) bond lengths are 3.28 Å. Both Mg(1)-Ga(1) bond lengths are 3.14 Å. In the second Mg site, Mg(2) is bonded to two equivalent K(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form distorted MgK2Mg10 cuboctahedra that share corners with four equivalent K(1)Mg10Ga2 cuboctahedra, corners with six equivalent Mg(2)K2Mg10 cuboctahedra, edges with two equivalent K(1)Mg10Ga2 cuboctahedra, faces with two equivalent K(1)Mg10Ga2 cuboctahedra, and faces with two equivalent Mg(2)K2Mg10 cuboctahedra. Both Mg(2)-Mg(4) bond lengths are 3.24 Å. All Mg(2)-Mg(3) bond lengths are 3.18 Å. In the third Mg site, Mg(3) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Mg(2), two equivalent Mg(4), and one Ga(1) atom. There is one shorter (3.38 Å) and one longer (3.43 Å) Mg(3)-Mg(4) bond length. The Mg(3)-Ga(1) bond length is 3.03 Å. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ga(1) atoms. Both Mg(4)-Ga(1) bond lengths are 3.43 Å. Ga(1) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Mg(3), two equivalent Mg(4), and four equivalent Mg(1) atoms.