K6Na2Pt(WO6)6 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 8-coordinate geometry to one O(2), one O(5), two equivalent O(4), and four equivalent O(3) atoms. Na(1) is bonded in a 3-coordinate geometry to three equivalent O(5) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted WO6 octahedra that share  an edgeedge with one Pt(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. Pt(1) is bonded to six equivalent O(2) atoms to form PtO6 octahedra that share edges with six equivalent W(1)O6 octahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted water-like geometry to two equivalent K(1) and two equivalent O(5) atoms. In the second O site, O(5) is bonded in a see-saw-like geometry to one K(1), one Na(1), and two equivalent O(4) atoms. In the third O site, O(1) is bonded in a water-like geometry to two equivalent W(1) atoms. In the fourth O site, O(2) is bonded to one K(1), two equivalent W(1), and one Pt(1) atom to form a mixture of distorted corner and edge-sharing OKPtW2 trigonal pyramids. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1) and one W(1) atom.
K6Na2Pt(WO6)6 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 8-coordinate geometry to one O(2), one O(5), two equivalent O(4), and four equivalent O(3) atoms. The K(1)-O(2) bond length is 2.74 Å. The K(1)-O(5) bond length is 2.89 Å. Both K(1)-O(4) bond lengths are 3.22 Å. There are two shorter (2.75 Å) and two longer (2.77 Å) K(1)-O(3) bond lengths. Na(1) is bonded in a 3-coordinate geometry to three equivalent O(5) atoms. All Na(1)-O(5) bond lengths are 2.45 Å. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted WO6 octahedra that share  an edgeedge with one Pt(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. Both W(1)-O(1) bond lengths are 1.98 Å. Both W(1)-O(2) bond lengths are 2.18 Å. Both W(1)-O(3) bond lengths are 1.82 Å. Pt(1) is bonded to six equivalent O(2) atoms to form PtO6 octahedra that share edges with six equivalent W(1)O6 octahedra. All Pt(1)-O(2) bond lengths are 2.04 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted water-like geometry to two equivalent K(1) and two equivalent O(5) atoms. Both O(4)-O(5) bond lengths are 1.46 Å. In the second O site, O(5) is bonded in a see-saw-like geometry to one K(1), one Na(1), and two equivalent O(4) atoms. In the third O site, O(1) is bonded in a water-like geometry to two equivalent W(1) atoms. In the fourth O site, O(2) is bonded to one K(1), two equivalent W(1), and one Pt(1) atom to form a mixture of distorted corner and edge-sharing OKPtW2 trigonal pyramids. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1) and one W(1) atom.