Mg2WNiO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. W(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Ni(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one W(1), and one Ni(1) atom to form corner-sharing OMg2NiW trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one W(1), and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mg(1) and one W(1) atom.
Mg2WNiO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. The Mg(1)-O(2) bond length is 2.15 Å. There is one shorter (2.08 Å) and one longer (2.19 Å) Mg(1)-O(1) bond length. There is one shorter (2.04 Å) and one longer (2.11 Å) Mg(1)-O(3) bond length. W(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both W(1)-O(1) bond lengths are 2.00 Å. Both W(1)-O(2) bond lengths are 1.93 Å. Both W(1)-O(3) bond lengths are 1.94 Å. Ni(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Ni(1)-O(1) bond lengths are 2.06 Å. Both Ni(1)-O(2) bond lengths are 1.90 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one W(1), and one Ni(1) atom to form corner-sharing OMg2NiW trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one W(1), and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mg(1) and one W(1) atom.