Mg6CoNi crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Co(1), and two equivalent Ni(1) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to four equivalent Mg(1), four equivalent Mg(3), two equivalent Co(1), and two equivalent Ni(1) atoms. In the third Mg site, Mg(3) is bonded in a 4-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Co(1), and two equivalent Ni(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to four equivalent Mg(1), four equivalent Mg(3), two equivalent Co(1), and two equivalent Ni(1) atoms. Co(1) is bonded in a 12-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms.
Mg6CoNi crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Co(1), and two equivalent Ni(1) atoms. There is one shorter (2.80 Å) and one longer (2.96 Å) Mg(1)-Mg(2) bond length. Both Mg(1)-Mg(4) bond lengths are 2.92 Å. There is one shorter (2.87 Å) and one longer (2.90 Å) Mg(1)-Co(1) bond length. Both Mg(1)-Ni(1) bond lengths are 2.72 Å. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to four equivalent Mg(1), four equivalent Mg(3), two equivalent Co(1), and two equivalent Ni(1) atoms. All Mg(2)-Mg(3) bond lengths are 2.92 Å. Both Mg(2)-Co(1) bond lengths are 3.30 Å. Both Mg(2)-Ni(1) bond lengths are 3.05 Å. In the third Mg site, Mg(3) is bonded in a 4-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Co(1), and two equivalent Ni(1) atoms. There is one shorter (2.78 Å) and one longer (2.98 Å) Mg(3)-Mg(4) bond length. Both Mg(3)-Co(1) bond lengths are 2.72 Å. There is one shorter (2.86 Å) and one longer (2.91 Å) Mg(3)-Ni(1) bond length. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to four equivalent Mg(1), four equivalent Mg(3), two equivalent Co(1), and two equivalent Ni(1) atoms. Both Mg(4)-Co(1) bond lengths are 3.03 Å. Both Mg(4)-Ni(1) bond lengths are 3.30 Å. Co(1) is bonded in a 12-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(1), and four equivalent Mg(3) atoms.