NaMo2Fe2H3O10 crystallizes in the monoclinic Cm space group. Na(1) is bonded to one O(5), one O(6), two equivalent O(7), and two equivalent O(8) atoms to form NaO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with three equivalent Mo(1)O4 tetrahedra, and corners with three equivalent Mo(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 68°. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(5), and two equivalent O(8) atoms to form MoO4 tetrahedra that share corners with three equivalent Na(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-71°. In the second Mo site, Mo(2) is bonded to one O(2), one O(6), and two equivalent O(7) atoms to form MoO4 tetrahedra that share corners with three equivalent Na(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-70°. Fe(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 68°. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) and one O(5) atom. In the third H site, H(3) is bonded in a linear geometry to one O(3) and one O(4) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mo(1) and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mo(2) and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a distorted tetrahedral geometry to two equivalent Fe(1), one H(1), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to two equivalent Fe(1), one H(2), and one H(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Na(1) and one Mo(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Na(1), one Mo(2), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Na(1), one Mo(1), and one Fe(1) atom.
NaMo2Fe2H3O10 crystallizes in the monoclinic Cm space group. Na(1) is bonded to one O(5), one O(6), two equivalent O(7), and two equivalent O(8) atoms to form NaO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with three equivalent Mo(1)O4 tetrahedra, and corners with three equivalent Mo(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 68°. The Na(1)-O(5) bond length is 2.63 Å. The Na(1)-O(6) bond length is 2.58 Å. Both Na(1)-O(7) bond lengths are 2.53 Å. Both Na(1)-O(8) bond lengths are 2.53 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(5), and two equivalent O(8) atoms to form MoO4 tetrahedra that share corners with three equivalent Na(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-71°. The Mo(1)-O(1) bond length is 1.84 Å. The Mo(1)-O(5) bond length is 1.76 Å. Both Mo(1)-O(8) bond lengths are 1.80 Å. In the second Mo site, Mo(2) is bonded to one O(2), one O(6), and two equivalent O(7) atoms to form MoO4 tetrahedra that share corners with three equivalent Na(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-70°. The Mo(2)-O(2) bond length is 1.84 Å. The Mo(2)-O(6) bond length is 1.76 Å. Both Mo(2)-O(7) bond lengths are 1.81 Å. Fe(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 68°. The Fe(1)-O(1) bond length is 2.20 Å. The Fe(1)-O(2) bond length is 2.20 Å. The Fe(1)-O(3) bond length is 2.10 Å. The Fe(1)-O(4) bond length is 2.21 Å. The Fe(1)-O(7) bond length is 2.14 Å. The Fe(1)-O(8) bond length is 2.14 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) and one O(5) atom. The H(2)-O(4) bond length is 1.00 Å. The H(2)-O(5) bond length is 1.73 Å. In the third H site, H(3) is bonded in a linear geometry to one O(3) and one O(4) atom. The H(3)-O(3) bond length is 1.44 Å. The H(3)-O(4) bond length is 1.08 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mo(1) and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mo(2) and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a distorted tetrahedral geometry to two equivalent Fe(1), one H(1), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to two equivalent Fe(1), one H(2), and one H(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Na(1) and one Mo(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Na(1), one Mo(2), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Na(1), one Mo(1), and one Fe(1) atom.