KBaMg6 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Ba(1), two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms to form KBa2Mg10 cuboctahedra that share corners with six equivalent K(1)Ba2Mg10 cuboctahedra, edges with four equivalent Ba(1)K2Mg10 cuboctahedra, faces with two equivalent K(1)Ba2Mg10 cuboctahedra, and faces with two equivalent Ba(1)K2Mg10 cuboctahedra. Ba(1) is bonded to two equivalent K(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form BaK2Mg10 cuboctahedra that share corners with six equivalent Ba(1)K2Mg10 cuboctahedra, edges with four equivalent K(1)Ba2Mg10 cuboctahedra, faces with two equivalent K(1)Ba2Mg10 cuboctahedra, and faces with two equivalent Ba(1)K2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 9-coordinate geometry to two equivalent K(1), two equivalent Ba(1), one Mg(1), two equivalent Mg(3), and two equivalent Mg(4) atoms. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent K(1), two equivalent Mg(4), and four equivalent Mg(3) atoms. In the third Mg site, Mg(3) is bonded in a 9-coordinate geometry to two equivalent K(1), two equivalent Ba(1), one Mg(3), two equivalent Mg(1), and two equivalent Mg(2) atoms. In the fourth Mg site, Mg(4) is bonded in a 8-coordinate geometry to two equivalent Ba(1), two equivalent Mg(2), and four equivalent Mg(1) atoms.
KBaMg6 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Ba(1), two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms to form KBa2Mg10 cuboctahedra that share corners with six equivalent K(1)Ba2Mg10 cuboctahedra, edges with four equivalent Ba(1)K2Mg10 cuboctahedra, faces with two equivalent K(1)Ba2Mg10 cuboctahedra, and faces with two equivalent Ba(1)K2Mg10 cuboctahedra. Both K(1)-Ba(1) bond lengths are 3.55 Å. Both K(1)-Mg(2) bond lengths are 3.61 Å. There are two shorter (3.43 Å) and two longer (3.83 Å) K(1)-Mg(1) bond lengths. All K(1)-Mg(3) bond lengths are 3.50 Å. Ba(1) is bonded to two equivalent K(1), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms to form BaK2Mg10 cuboctahedra that share corners with six equivalent Ba(1)K2Mg10 cuboctahedra, edges with four equivalent K(1)Ba2Mg10 cuboctahedra, faces with two equivalent K(1)Ba2Mg10 cuboctahedra, and faces with two equivalent Ba(1)K2Mg10 cuboctahedra. Both Ba(1)-Mg(4) bond lengths are 3.61 Å. All Ba(1)-Mg(1) bond lengths are 3.53 Å. There are two shorter (3.50 Å) and two longer (3.77 Å) Ba(1)-Mg(3) bond lengths. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 9-coordinate geometry to two equivalent K(1), two equivalent Ba(1), one Mg(1), two equivalent Mg(3), and two equivalent Mg(4) atoms. The Mg(1)-Mg(1) bond length is 3.34 Å. Both Mg(1)-Mg(3) bond lengths are 3.41 Å. Both Mg(1)-Mg(4) bond lengths are 3.39 Å. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent K(1), two equivalent Mg(4), and four equivalent Mg(3) atoms. Both Mg(2)-Mg(4) bond lengths are 3.47 Å. All Mg(2)-Mg(3) bond lengths are 3.41 Å. In the third Mg site, Mg(3) is bonded in a 9-coordinate geometry to two equivalent K(1), two equivalent Ba(1), one Mg(3), two equivalent Mg(1), and two equivalent Mg(2) atoms. The Mg(3)-Mg(3) bond length is 3.39 Å. In the fourth Mg site, Mg(4) is bonded in a 8-coordinate geometry to two equivalent Ba(1), two equivalent Mg(2), and four equivalent Mg(1) atoms.