NaFeBP2H3O10 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Fe(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra and corners with four equivalent P(1)O4 tetrahedra. B(1) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form BO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and  a cornercorner with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-51°. There are two 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 linear geometry to two equivalent O(2) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one B(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1), one P(1), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Fe(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Fe(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Fe(1), one B(1), and one H(1) atom.
NaFeBP2H3O10 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Na(1)-O(1) bond lengths are 2.66 Å. Both Na(1)-O(2) bond lengths are 2.55 Å. Both Na(1)-O(3) bond lengths are 2.68 Å. Both Na(1)-O(4) bond lengths are 2.56 Å. Fe(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra and corners with four equivalent P(1)O4 tetrahedra. Both Fe(1)-O(3) bond lengths are 1.99 Å. Both Fe(1)-O(4) bond lengths are 2.03 Å. Both Fe(1)-O(5) bond lengths are 2.08 Å. B(1) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form BO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. Both B(1)-O(1) bond lengths are 1.47 Å. Both B(1)-O(5) bond lengths are 1.49 Å. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and  a cornercorner with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-51°. The P(1)-O(1) bond length is 1.57 Å. The P(1)-O(2) bond length is 1.56 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.53 Å. There are two 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 0.99 Å. In the second H site, H(2) is bonded in a linear geometry to two equivalent O(2) atoms. Both H(2)-O(2) bond lengths are 1.22 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one B(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1), one P(1), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Fe(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Fe(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Fe(1), one B(1), and one H(1) atom.