Na2H6TeSO10 crystallizes in the monoclinic Cc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(8), and one O(9) atom to form distorted NaO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, edges with two equivalent Te(1)O6 octahedra, and  an edgeedge with one Na(2)O6 pentagonal pyramid. In the second Na site, Na(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(7), and one O(9) atom to form distorted NaO6 pentagonal pyramids that share corners with two equivalent Te(1)O6 octahedra, corners with two equivalent S(1)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-42°. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(6) atom. In the fourth H site, H(4) is bonded in a distorted linear geometry to one O(8) and one O(9) atom. In the fifth H site, H(5) is bonded in a distorted single-bond geometry to one O(10) and one O(7) atom. In the sixth H site, H(6) is bonded in a distorted single-bond geometry to one O(10) and one O(3) atom. Te(1) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form TeO6 octahedra that share corners with two equivalent Na(2)O6 pentagonal pyramids and edges with two equivalent Na(1)O6 octahedra. S(1) is bonded to one O(1), one O(10), one O(4), and one O(9) atom to form SO4 tetrahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 pentagonal pyramids, and  an edgeedge with one Na(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 52-65°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(2) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Na(2), one H(2), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one H(6), and one Te(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Na(1), one H(1), and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Na(1), one H(3), and one Te(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(2), one H(5), and one Te(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(1), one H(4), and one Te(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one H(4), and one S(1) atom. In the tenth O site, O(10) is bonded in a distorted tetrahedral geometry to one Na(2), one H(5), one H(6), and one S(1) atom.
Na2H6TeSO10 crystallizes in the monoclinic Cc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(8), and one O(9) atom to form distorted NaO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, edges with two equivalent Te(1)O6 octahedra, and  an edgeedge with one Na(2)O6 pentagonal pyramid. The Na(1)-O(3) bond length is 2.50 Å. The Na(1)-O(4) bond length is 2.37 Å. The Na(1)-O(5) bond length is 2.45 Å. The Na(1)-O(6) bond length is 2.56 Å. The Na(1)-O(8) bond length is 2.36 Å. The Na(1)-O(9) bond length is 2.35 Å. In the second Na site, Na(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(7), and one O(9) atom to form distorted NaO6 pentagonal pyramids that share corners with two equivalent Te(1)O6 octahedra, corners with two equivalent S(1)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-42°. The Na(2)-O(1) bond length is 2.37 Å. The Na(2)-O(10) bond length is 2.60 Å. The Na(2)-O(2) bond length is 2.42 Å. The Na(2)-O(4) bond length is 2.36 Å. The Na(2)-O(7) bond length is 2.50 Å. The Na(2)-O(9) bond length is 2.70 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) atom. The H(1)-O(5) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 1.00 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(6) atom. The H(3)-O(6) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a distorted linear geometry to one O(8) and one O(9) atom. The H(4)-O(8) bond length is 1.02 Å. The H(4)-O(9) bond length is 1.63 Å. In the fifth H site, H(5) is bonded in a distorted single-bond geometry to one O(10) and one O(7) atom. The H(5)-O(10) bond length is 1.66 Å. The H(5)-O(7) bond length is 1.01 Å. In the sixth H site, H(6) is bonded in a distorted single-bond geometry to one O(10) and one O(3) atom. The H(6)-O(10) bond length is 1.68 Å. The H(6)-O(3) bond length is 1.01 Å. Te(1) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form TeO6 octahedra that share corners with two equivalent Na(2)O6 pentagonal pyramids and edges with two equivalent Na(1)O6 octahedra. The Te(1)-O(2) bond length is 1.95 Å. The Te(1)-O(3) bond length is 1.97 Å. The Te(1)-O(5) bond length is 1.96 Å. The Te(1)-O(6) bond length is 1.97 Å. The Te(1)-O(7) bond length is 1.93 Å. The Te(1)-O(8) bond length is 1.94 Å. S(1) is bonded to one O(1), one O(10), one O(4), and one O(9) atom to form SO4 tetrahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 pentagonal pyramids, and  an edgeedge with one Na(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 52-65°. The S(1)-O(1) bond length is 1.49 Å. The S(1)-O(10) bond length is 1.52 Å. The S(1)-O(4) bond length is 1.48 Å. The S(1)-O(9) bond length is 1.50 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(2) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Na(2), one H(2), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one H(6), and one Te(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Na(1), one H(1), and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Na(1), one H(3), and one Te(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(2), one H(5), and one Te(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(1), one H(4), and one Te(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one H(4), and one S(1) atom. In the tenth O site, O(10) is bonded in a distorted tetrahedral geometry to one Na(2), one H(5), one H(6), and one S(1) atom.