NaMo6O17 crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded in a 7-coordinate geometry to one O(10), one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms. There are six inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(10), and two equivalent O(6) atoms to form corner-sharing MoO4 tetrahedra. The corner-sharing octahedral tilt angles range from 26-37°. In the second Mo site, Mo(2) is bonded to one O(12), one O(2), two equivalent O(11), and two equivalent O(8) atoms to form MoO6 octahedra that share corners with two equivalent Mo(6)O6 octahedra, corners with three equivalent Mo(3)O6 octahedra, and  a cornercorner with one Mo(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 3-12°. In the third Mo site, Mo(3) is bonded to one O(2), one O(7), two equivalent O(8), and two equivalent O(9) atoms to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 3-7°. In the fourth Mo site, Mo(4) is bonded to one O(12), one O(4), and two equivalent O(5) atoms to form corner-sharing MoO4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-24°. In the fifth Mo site, Mo(5) is bonded to one O(3), one O(7), two equivalent O(5), and two equivalent O(9) atoms to form distorted MoO6 octahedra that share  a cornercorner with one Mo(6)O6 octahedra, corners with three equivalent Mo(3)O6 octahedra, and corners with two equivalent Mo(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 5-7°. In the sixth Mo site, Mo(6) is bonded to one O(1), one O(3), two equivalent O(11), and two equivalent O(6) atoms to form distorted MoO6 octahedra that share  a cornercorner with one Mo(5)O6 octahedra, corners with two equivalent Mo(2)O6 octahedra, and corners with three equivalent Mo(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 6-12°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mo(1) and one Mo(6) atom. In the second O site, O(2) is bonded in a linear geometry to one Mo(2) and one Mo(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Na(1), one Mo(5), and one Mo(6) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Na(1) and one Mo(4) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1), one Mo(4), and one Mo(5) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), and one Mo(6) atom. In the seventh O site, O(7) is bonded in a linear geometry to one Mo(3) and one Mo(5) atom. In the eighth O site, O(8) is bonded in a linear geometry to one Mo(2) and one Mo(3) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Mo(3) and one Mo(5) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Na(1) and one Mo(1) atom. In the eleventh O site, O(11) is bonded in a linear geometry to one Mo(2) and one Mo(6) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Mo(2) and one Mo(4) atom.
NaMo6O17 crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded in a 7-coordinate geometry to one O(10), one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms. The Na(1)-O(10) bond length is 2.37 Å. The Na(1)-O(3) bond length is 2.66 Å. The Na(1)-O(4) bond length is 2.24 Å. Both Na(1)-O(5) bond lengths are 2.45 Å. Both Na(1)-O(6) bond lengths are 2.44 Å. There are six inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(10), and two equivalent O(6) atoms to form corner-sharing MoO4 tetrahedra. The corner-sharing octahedral tilt angles range from 26-37°. The Mo(1)-O(1) bond length is 1.78 Å. The Mo(1)-O(10) bond length is 1.71 Å. Both Mo(1)-O(6) bond lengths are 1.78 Å. In the second Mo site, Mo(2) is bonded to one O(12), one O(2), two equivalent O(11), and two equivalent O(8) atoms to form MoO6 octahedra that share corners with two equivalent Mo(6)O6 octahedra, corners with three equivalent Mo(3)O6 octahedra, and  a cornercorner with one Mo(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 3-12°. The Mo(2)-O(12) bond length is 2.07 Å. The Mo(2)-O(2) bond length is 1.85 Å. Both Mo(2)-O(11) bond lengths are 2.04 Å. Both Mo(2)-O(8) bond lengths are 1.85 Å. In the third Mo site, Mo(3) is bonded to one O(2), one O(7), two equivalent O(8), and two equivalent O(9) atoms to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 3-7°. The Mo(3)-O(2) bond length is 1.87 Å. The Mo(3)-O(7) bond length is 2.01 Å. Both Mo(3)-O(8) bond lengths are 1.88 Å. Both Mo(3)-O(9) bond lengths are 1.99 Å. In the fourth Mo site, Mo(4) is bonded to one O(12), one O(4), and two equivalent O(5) atoms to form corner-sharing MoO4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-24°. The Mo(4)-O(12) bond length is 1.78 Å. The Mo(4)-O(4) bond length is 1.72 Å. Both Mo(4)-O(5) bond lengths are 1.77 Å. In the fifth Mo site, Mo(5) is bonded to one O(3), one O(7), two equivalent O(5), and two equivalent O(9) atoms to form distorted MoO6 octahedra that share  a cornercorner with one Mo(6)O6 octahedra, corners with three equivalent Mo(3)O6 octahedra, and corners with two equivalent Mo(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 5-7°. The Mo(5)-O(3) bond length is 2.06 Å. The Mo(5)-O(7) bond length is 1.78 Å. Both Mo(5)-O(5) bond lengths are 2.10 Å. Both Mo(5)-O(9) bond lengths are 1.78 Å. In the sixth Mo site, Mo(6) is bonded to one O(1), one O(3), two equivalent O(11), and two equivalent O(6) atoms to form distorted MoO6 octahedra that share  a cornercorner with one Mo(5)O6 octahedra, corners with two equivalent Mo(2)O6 octahedra, and corners with three equivalent Mo(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 6-12°. The Mo(6)-O(1) bond length is 2.07 Å. The Mo(6)-O(3) bond length is 1.77 Å. Both Mo(6)-O(11) bond lengths are 1.77 Å. Both Mo(6)-O(6) bond lengths are 2.16 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mo(1) and one Mo(6) atom. In the second O site, O(2) is bonded in a linear geometry to one Mo(2) and one Mo(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Na(1), one Mo(5), and one Mo(6) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Na(1) and one Mo(4) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1), one Mo(4), and one Mo(5) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), and one Mo(6) atom. In the seventh O site, O(7) is bonded in a linear geometry to one Mo(3) and one Mo(5) atom. In the eighth O site, O(8) is bonded in a linear geometry to one Mo(2) and one Mo(3) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Mo(3) and one Mo(5) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Na(1) and one Mo(1) atom. In the eleventh O site, O(11) is bonded in a linear geometry to one Mo(2) and one Mo(6) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Mo(2) and one Mo(4) atom.