The structure described by Na5P3H2O11 crystallizes in the triclinic P-1 space group. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one H(3), one O(2), one O(3), one O(5), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. In the third Na site, Na(3) is bonded to one O(10), one O(2), one O(4), one O(6), one O(7), and one O(9) atom to form distorted NaO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the fourth Na site, Na(4) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(5), and two equivalent O(2) atoms. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one H(3), one O(10), one O(3), one O(7), one O(8), and two equivalent O(11) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Na(3)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-62°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Na(3)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-61°. In the third P site, P(3) is bonded to one O(10), one O(11), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Na(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-71°. There are three inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to two equivalent O(5) atoms. In the second H site, H(2) is bonded in a linear geometry to two equivalent O(10) atoms. In the third H site, H(3) is bonded in a distorted single-bond geometry to one Na(1), one Na(5), and one H(3) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(4), one P(1), and one P(2) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), two equivalent Na(4), and one P(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(5), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Na(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), one Na(4), one P(2), and one H(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Na(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(3), one Na(5), and one P(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(5), and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Na(3), and one P(3) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Na(2), one Na(3), one Na(5), one P(3), and one H(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to two equivalent Na(5) and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na5P3H2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.026
_cell_length_b   7.082
_cell_length_c   10.938
_cell_angle_alpha   82.937
_cell_angle_beta   81.627
_cell_angle_gamma   76.650
_symmetry_Int_Tables_number   1
_cell_volume   521.615
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.072  0.002  0.757  1.0
  Na  Na1  1  0.928  0.998  0.243  1.0
  Na  Na2  1  0.959  0.579  0.745  1.0
  Na  Na3  1  0.041  0.421  0.255  1.0
  Na  Na4  1  0.451  0.566  0.751  1.0
  Na  Na5  1  0.549  0.434  0.249  1.0
  Na  Na6  1  0.680  0.783  0.501  1.0
  Na  Na7  1  0.320  0.217  0.499  1.0
  Na  Na8  1  0.702  0.805  0.001  1.0
  Na  Na9  1  0.298  0.195  0.999  1.0
  P  P10  1  0.428  0.944  0.283  1.0
  P  P11  1  0.572  0.056  0.717  1.0
  P  P12  1  0.204  0.690  0.465  1.0
  P  P13  1  0.796  0.310  0.535  1.0
  P  P14  1  0.195  0.681  0.025  1.0
  P  P15  1  0.805  0.319  0.975  1.0
  H  H16  1  0.000  0.000  0.500  1.0
  H  H17  1  0.500  0.500  0.000  1.0
  H  H18  1  0.948  0.994  0.011  1.0
  H  H19  1  0.052  0.006  0.990  1.0
  O  O20  1  0.373  0.816  0.418  1.0
  O  O21  1  0.627  0.184  0.582  1.0
  O  O22  1  0.422  0.956  0.677  1.0
  O  O23  1  0.578  0.044  0.323  1.0
  O  O24  1  0.760  0.917  0.752  1.0
  O  O25  1  0.240  0.083  0.248  1.0
  O  O26  1  0.230  0.530  0.380  1.0
  O  O27  1  0.770  0.470  0.620  1.0
  O  O28  1  0.005  0.847  0.455  1.0
  O  O29  1  0.995  0.153  0.545  1.0
  O  O30  1  0.231  0.617  0.599  1.0
  O  O31  1  0.769  0.383  0.401  1.0
  O  O32  1  0.520  0.790  0.192  1.0
  O  O33  1  0.480  0.210  0.808  1.0
  O  O34  1  0.015  0.706  0.124  1.0
  O  O35  1  0.985  0.294  0.876  1.0
  O  O36  1  0.142  0.682  0.892  1.0
  O  O37  1  0.858  0.318  0.108  1.0
  O  O38  1  0.656  0.515  0.939  1.0
  O  O39  1  0.344  0.485  0.061  1.0
  O  O40  1  0.319  0.843  0.009  1.0
  O  O41  1  0.681  0.157  0.991  1.0
[/CIF]
.
The structure described by Na5P3H2O11 crystallizes in the triclinic P-1 space group. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one H(3), one O(2), one O(3), one O(5), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. In the third Na site, Na(3) is bonded to one O(10), one O(2), one O(4), one O(6), one O(7), and one O(9) atom to form distorted NaO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the fourth Na site, Na(4) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(5), and two equivalent O(2) atoms. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one H(3), one O(10), one O(3), one O(7), one O(8), and two equivalent O(11) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Na(3)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-62°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Na(3)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-61°. In the third P site, P(3) is bonded to one O(10), one O(11), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Na(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-71°. There are three inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to two equivalent O(5) atoms. In the second H site, H(2) is bonded in a linear geometry to two equivalent O(10) atoms. In the third H site, H(3) is bonded in a distorted single-bond geometry to one Na(1), one Na(5), and one H(3) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(4), one P(1), and one P(2) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), two equivalent Na(4), and one P(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(5), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Na(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), one Na(4), one P(2), and one H(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Na(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(3), one Na(5), and one P(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(5), and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Na(3), and one P(3) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Na(2), one Na(3), one Na(5), one P(3), and one H(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to two equivalent Na(5) and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na5P3H2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.026
_cell_length_b   7.082
_cell_length_c   10.938
_cell_angle_alpha   82.937
_cell_angle_beta   81.627
_cell_angle_gamma   76.650
_symmetry_Int_Tables_number   1
_cell_volume   521.615
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.072  0.002  0.757  1.0
  Na  Na1  1  0.928  0.998  0.243  1.0
  Na  Na2  1  0.959  0.579  0.745  1.0
  Na  Na3  1  0.041  0.421  0.255  1.0
  Na  Na4  1  0.451  0.566  0.751  1.0
  Na  Na5  1  0.549  0.434  0.249  1.0
  Na  Na6  1  0.680  0.783  0.501  1.0
  Na  Na7  1  0.320  0.217  0.499  1.0
  Na  Na8  1  0.702  0.805  0.001  1.0
  Na  Na9  1  0.298  0.195  0.999  1.0
  P  P10  1  0.428  0.944  0.283  1.0
  P  P11  1  0.572  0.056  0.717  1.0
  P  P12  1  0.204  0.690  0.465  1.0
  P  P13  1  0.796  0.310  0.535  1.0
  P  P14  1  0.195  0.681  0.025  1.0
  P  P15  1  0.805  0.319  0.975  1.0
  H  H16  1  0.000  0.000  0.500  1.0
  H  H17  1  0.500  0.500  0.000  1.0
  H  H18  1  0.948  0.994  0.011  1.0
  H  H19  1  0.052  0.006  0.990  1.0
  O  O20  1  0.373  0.816  0.418  1.0
  O  O21  1  0.627  0.184  0.582  1.0
  O  O22  1  0.422  0.956  0.677  1.0
  O  O23  1  0.578  0.044  0.323  1.0
  O  O24  1  0.760  0.917  0.752  1.0
  O  O25  1  0.240  0.083  0.248  1.0
  O  O26  1  0.230  0.530  0.380  1.0
  O  O27  1  0.770  0.470  0.620  1.0
  O  O28  1  0.005  0.847  0.455  1.0
  O  O29  1  0.995  0.153  0.545  1.0
  O  O30  1  0.231  0.617  0.599  1.0
  O  O31  1  0.769  0.383  0.401  1.0
  O  O32  1  0.520  0.790  0.192  1.0
  O  O33  1  0.480  0.210  0.808  1.0
  O  O34  1  0.015  0.706  0.124  1.0
  O  O35  1  0.985  0.294  0.876  1.0
  O  O36  1  0.142  0.682  0.892  1.0
  O  O37  1  0.858  0.318  0.108  1.0
  O  O38  1  0.656  0.515  0.939  1.0
  O  O39  1  0.344  0.485  0.061  1.0
  O  O40  1  0.319  0.843  0.009  1.0
  O  O41  1  0.681  0.157  0.991  1.0
[/CIF]
.