KMg6Ni crystallizes in the orthorhombic Amm2 space group. K(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3), two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ni(1) atoms. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one Ni(1) atom. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to four equivalent K(1), two equivalent Mg(4), four equivalent Mg(3), and two equivalent Ni(1) atoms. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to one K(1), two equivalent Mg(2), and two equivalent Ni(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 2-coordinate geometry to two equivalent K(1) and two equivalent Mg(2) atoms. Ni(1) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(2), and four equivalent Mg(3) atoms.
KMg6Ni crystallizes in the orthorhombic Amm2 space group. K(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3), two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ni(1) atoms. Both K(1)-Mg(3) bond lengths are 3.34 Å. Both K(1)-Mg(4) bond lengths are 3.27 Å. All K(1)-Mg(1) bond lengths are 3.78 Å. All K(1)-Mg(2) bond lengths are 4.10 Å. Both K(1)-Ni(1) bond lengths are 3.60 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one Ni(1) atom. The Mg(1)-Ni(1) bond length is 2.60 Å. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to four equivalent K(1), two equivalent Mg(4), four equivalent Mg(3), and two equivalent Ni(1) atoms. Both Mg(2)-Mg(4) bond lengths are 3.51 Å. All Mg(2)-Mg(3) bond lengths are 3.16 Å. Both Mg(2)-Ni(1) bond lengths are 3.32 Å. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to one K(1), two equivalent Mg(2), and two equivalent Ni(1) atoms. Both Mg(3)-Ni(1) bond lengths are 2.71 Å. In the fourth Mg site, Mg(4) is bonded in a 2-coordinate geometry to two equivalent K(1) and two equivalent Mg(2) atoms. Ni(1) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent Mg(1), two equivalent Mg(2), and four equivalent Mg(3) atoms.