Na2W3O10 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 7-coordinate geometry to one O(2), one O(4), two equivalent O(3), and three equivalent O(5) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), and two equivalent O(1) atoms. In the second W site, W(2) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one W(2) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one W(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Na(1), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Na(1) and one W(1) atom. In the fifth O site, O(5) is bonded to three equivalent Na(1) and one W(1) atom to form a mixture of distorted corner and edge-sharing ONa3W tetrahedra.
Na2W3O10 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 7-coordinate geometry to one O(2), one O(4), two equivalent O(3), and three equivalent O(5) atoms. The Na(1)-O(2) bond length is 2.47 Å. The Na(1)-O(4) bond length is 2.47 Å. There is one shorter (2.93 Å) and one longer (3.04 Å) Na(1)-O(3) bond length. There are a spread of Na(1)-O(5) bond distances ranging from 2.68-2.91 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), and two equivalent O(1) atoms. The W(1)-O(3) bond length is 1.93 Å. The W(1)-O(4) bond length is 1.77 Å. The W(1)-O(5) bond length is 1.78 Å. There is one shorter (1.97 Å) and one longer (2.13 Å) W(1)-O(1) bond length. In the second W site, W(2) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both W(2)-O(1) bond lengths are 2.18 Å. Both W(2)-O(2) bond lengths are 1.77 Å. Both W(2)-O(3) bond lengths are 2.02 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one W(2) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one W(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Na(1), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Na(1) and one W(1) atom. In the fifth O site, O(5) is bonded to three equivalent Na(1) and one W(1) atom to form a mixture of distorted corner and edge-sharing ONa3W tetrahedra.