Na4Th(MoO4)4 crystallizes in the tetragonal I4_1/a space group. Na(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted NaO6 pentagonal pyramids that share corners with six equivalent Mo(1)O4 tetrahedra and edges with two equivalent Na(1)O6 pentagonal pyramids. Th(1) is bonded in a 8-coordinate geometry to four equivalent O(3) and four equivalent O(4) atoms. Mo(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MoO4 tetrahedra that share corners with six equivalent Na(1)O6 pentagonal pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(1) and one Mo(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Th(1), and one Mo(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Th(1), and one Mo(1) atom.
Na4Th(MoO4)4 crystallizes in the tetragonal I4_1/a space group. Na(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted NaO6 pentagonal pyramids that share corners with six equivalent Mo(1)O4 tetrahedra and edges with two equivalent Na(1)O6 pentagonal pyramids. The Na(1)-O(3) bond length is 2.53 Å. The Na(1)-O(4) bond length is 2.54 Å. There is one shorter (2.40 Å) and one longer (2.50 Å) Na(1)-O(1) bond length. There is one shorter (2.41 Å) and one longer (2.52 Å) Na(1)-O(2) bond length. Th(1) is bonded in a 8-coordinate geometry to four equivalent O(3) and four equivalent O(4) atoms. All Th(1)-O(3) bond lengths are 2.43 Å. All Th(1)-O(4) bond lengths are 2.43 Å. Mo(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MoO4 tetrahedra that share corners with six equivalent Na(1)O6 pentagonal pyramids. The Mo(1)-O(1) bond length is 1.76 Å. The Mo(1)-O(2) bond length is 1.77 Å. The Mo(1)-O(3) bond length is 1.83 Å. The Mo(1)-O(4) bond length is 1.85 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(1) and one Mo(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Th(1), and one Mo(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Th(1), and one Mo(1) atom.