The compound described by Na2P3HO9 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), one O(8), one O(9), and two equivalent O(2) atoms to form NaO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra, and edges with three equivalent Na(2)O6 octahedra. In the second Na site, Na(2) is bonded to one O(2), one O(4), one O(8), one O(9), and two equivalent O(1) atoms to form NaO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Na(2)O6 octahedra, and edges with three equivalent Na(1)O6 octahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Na(1)O6 octahedra, corners with three equivalent Na(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-57°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with three equivalent Na(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-60°. In the third P site, P(3) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-51°. H(1) is bonded in a linear geometry to one O(3) and one O(4) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Na(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), two equivalent Na(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one P(2), and one H(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(2), one P(1), and one H(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one P(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2P3HO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.789
_cell_length_b   7.269
_cell_length_c   7.857
_cell_angle_alpha   92.318
_cell_angle_beta   102.526
_cell_angle_gamma   90.003
_symmetry_Int_Tables_number   1
_cell_volume   378.149
_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  0.585  0.643  0.845  1.0
  Na  Na1  1  0.415  0.357  0.155  1.0
  Na  Na2  1  0.088  0.654  0.853  1.0
  Na  Na3  1  0.912  0.346  0.147  1.0
  P  P4  1  0.095  0.162  0.778  1.0
  P  P5  1  0.905  0.838  0.222  1.0
  P  P6  1  0.537  0.170  0.776  1.0
  P  P7  1  0.463  0.830  0.224  1.0
  P  P8  1  0.767  0.362  0.552  1.0
  P  P9  1  0.233  0.638  0.448  1.0
  H  H10  1  0.796  0.980  0.822  1.0
  H  H11  1  0.204  0.020  0.178  1.0
  O  O12  1  0.125  0.311  0.919  1.0
  O  O13  1  0.875  0.689  0.081  1.0
  O  O14  1  0.585  0.315  0.919  1.0
  O  O15  1  0.415  0.685  0.081  1.0
  O  O16  1  0.640  0.980  0.821  1.0
  O  O17  1  0.360  0.020  0.179  1.0
  O  O18  1  0.009  0.978  0.811  1.0
  O  O19  1  0.991  0.022  0.189  1.0
  O  O20  1  0.305  0.116  0.716  1.0
  O  O21  1  0.695  0.884  0.284  1.0
  O  O22  1  0.965  0.231  0.596  1.0
  O  O23  1  0.035  0.769  0.404  1.0
  O  O24  1  0.590  0.227  0.598  1.0
  O  O25  1  0.410  0.773  0.402  1.0
  O  O26  1  0.794  0.528  0.674  1.0
  O  O27  1  0.206  0.472  0.326  1.0
  O  O28  1  0.284  0.623  0.641  1.0
  O  O29  1  0.716  0.377  0.359  1.0
[/CIF]
.
The compound described by Na2P3HO9 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), one O(8), one O(9), and two equivalent O(2) atoms to form NaO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra, and edges with three equivalent Na(2)O6 octahedra. In the second Na site, Na(2) is bonded to one O(2), one O(4), one O(8), one O(9), and two equivalent O(1) atoms to form NaO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Na(2)O6 octahedra, and edges with three equivalent Na(1)O6 octahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Na(1)O6 octahedra, corners with three equivalent Na(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-57°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with three equivalent Na(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-60°. In the third P site, P(3) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-51°. H(1) is bonded in a linear geometry to one O(3) and one O(4) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Na(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), two equivalent Na(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one P(2), and one H(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(2), one P(1), and one H(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one P(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2P3HO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.789
_cell_length_b   7.269
_cell_length_c   7.857
_cell_angle_alpha   92.318
_cell_angle_beta   102.526
_cell_angle_gamma   90.003
_symmetry_Int_Tables_number   1
_cell_volume   378.149
_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  0.585  0.643  0.845  1.0
  Na  Na1  1  0.415  0.357  0.155  1.0
  Na  Na2  1  0.088  0.654  0.853  1.0
  Na  Na3  1  0.912  0.346  0.147  1.0
  P  P4  1  0.095  0.162  0.778  1.0
  P  P5  1  0.905  0.838  0.222  1.0
  P  P6  1  0.537  0.170  0.776  1.0
  P  P7  1  0.463  0.830  0.224  1.0
  P  P8  1  0.767  0.362  0.552  1.0
  P  P9  1  0.233  0.638  0.448  1.0
  H  H10  1  0.796  0.980  0.822  1.0
  H  H11  1  0.204  0.020  0.178  1.0
  O  O12  1  0.125  0.311  0.919  1.0
  O  O13  1  0.875  0.689  0.081  1.0
  O  O14  1  0.585  0.315  0.919  1.0
  O  O15  1  0.415  0.685  0.081  1.0
  O  O16  1  0.640  0.980  0.821  1.0
  O  O17  1  0.360  0.020  0.179  1.0
  O  O18  1  0.009  0.978  0.811  1.0
  O  O19  1  0.991  0.022  0.189  1.0
  O  O20  1  0.305  0.116  0.716  1.0
  O  O21  1  0.695  0.884  0.284  1.0
  O  O22  1  0.965  0.231  0.596  1.0
  O  O23  1  0.035  0.769  0.404  1.0
  O  O24  1  0.590  0.227  0.598  1.0
  O  O25  1  0.410  0.773  0.402  1.0
  O  O26  1  0.794  0.528  0.674  1.0
  O  O27  1  0.206  0.472  0.326  1.0
  O  O28  1  0.284  0.623  0.641  1.0
  O  O29  1  0.716  0.377  0.359  1.0
[/CIF]
.