Mg6WNi crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent W(1), and two equivalent Ni(1) atoms to form distorted MgMg8Ni2W2 cuboctahedra that share corners with four equivalent W(1)Mg10Ni2 cuboctahedra, corners with four equivalent Ni(1)Mg10W2 cuboctahedra, corners with ten equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent W(1)Mg10Ni2 cuboctahedra, edges with two equivalent Ni(1)Mg10W2 cuboctahedra, faces with two equivalent W(1)Mg10Ni2 cuboctahedra, faces with two equivalent Ni(1)Mg10W2 cuboctahedra, and faces with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1), two equivalent W(1), and two equivalent Ni(1) atoms. In the third Mg site, Mg(3) is bonded in a distorted bent 120 degrees geometry to four equivalent Mg(1) and two equivalent Ni(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted bent 120 degrees geometry to four equivalent Mg(1) and two equivalent W(1) atoms. W(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ni(1) atoms to form WMg10Ni2 cuboctahedra that share corners with four equivalent Ni(1)Mg10W2 cuboctahedra, corners with six equivalent W(1)Mg10Ni2 cuboctahedra, corners with eight equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent Ni(1)Mg10W2 cuboctahedra, edges with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra, faces with two equivalent W(1)Mg10Ni2 cuboctahedra, faces with two equivalent Ni(1)Mg10W2 cuboctahedra, and faces with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra. Ni(1) is bonded to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent W(1) atoms to form NiMg10W2 cuboctahedra that share corners with four equivalent W(1)Mg10Ni2 cuboctahedra, corners with six equivalent Ni(1)Mg10W2 cuboctahedra, corners with eight equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent W(1)Mg10Ni2 cuboctahedra, edges with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra, faces with two equivalent W(1)Mg10Ni2 cuboctahedra, faces with two equivalent Ni(1)Mg10W2 cuboctahedra, and faces with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra.
Mg6WNi crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent W(1), and two equivalent Ni(1) atoms to form distorted MgMg8Ni2W2 cuboctahedra that share corners with four equivalent W(1)Mg10Ni2 cuboctahedra, corners with four equivalent Ni(1)Mg10W2 cuboctahedra, corners with ten equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent W(1)Mg10Ni2 cuboctahedra, edges with two equivalent Ni(1)Mg10W2 cuboctahedra, faces with two equivalent W(1)Mg10Ni2 cuboctahedra, faces with two equivalent Ni(1)Mg10W2 cuboctahedra, and faces with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra. There is one shorter (2.86 Å) and one longer (2.89 Å) Mg(1)-Mg(1) bond length. Both Mg(1)-Mg(2) bond lengths are 2.92 Å. Both Mg(1)-Mg(3) bond lengths are 3.05 Å. Both Mg(1)-Mg(4) bond lengths are 3.00 Å. There is one shorter (3.02 Å) and one longer (3.04 Å) Mg(1)-W(1) bond length. There is one shorter (2.94 Å) and one longer (3.12 Å) Mg(1)-Ni(1) bond length. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1), two equivalent W(1), and two equivalent Ni(1) atoms. Both Mg(2)-W(1) bond lengths are 2.95 Å. Both Mg(2)-Ni(1) bond lengths are 2.95 Å. In the third Mg site, Mg(3) is bonded in a distorted bent 120 degrees geometry to four equivalent Mg(1) and two equivalent Ni(1) atoms. Both Mg(3)-Ni(1) bond lengths are 2.84 Å. In the fourth Mg site, Mg(4) is bonded in a distorted bent 120 degrees geometry to four equivalent Mg(1) and two equivalent W(1) atoms. Both Mg(4)-W(1) bond lengths are 2.84 Å. W(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ni(1) atoms to form WMg10Ni2 cuboctahedra that share corners with four equivalent Ni(1)Mg10W2 cuboctahedra, corners with six equivalent W(1)Mg10Ni2 cuboctahedra, corners with eight equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent Ni(1)Mg10W2 cuboctahedra, edges with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra, faces with two equivalent W(1)Mg10Ni2 cuboctahedra, faces with two equivalent Ni(1)Mg10W2 cuboctahedra, and faces with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra. Both W(1)-Ni(1) bond lengths are 2.88 Å. Ni(1) is bonded to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent W(1) atoms to form NiMg10W2 cuboctahedra that share corners with four equivalent W(1)Mg10Ni2 cuboctahedra, corners with six equivalent Ni(1)Mg10W2 cuboctahedra, corners with eight equivalent Mg(1)Mg8Ni2W2 cuboctahedra, edges with two equivalent W(1)Mg10Ni2 cuboctahedra, edges with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra, faces with two equivalent W(1)Mg10Ni2 cuboctahedra, faces with two equivalent Ni(1)Mg10W2 cuboctahedra, and faces with four equivalent Mg(1)Mg8Ni2W2 cuboctahedra.