The compound described by NaPO3 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted NaO6 pentagonal pyramids that share corners with two equivalent Na(2)O6 pentagonal pyramids, corners with two equivalent P(2)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Na(1)O6 pentagonal pyramid, edges with two equivalent Na(2)O6 pentagonal pyramids, and  an edgeedge with one P(2)O4 tetrahedra. In the second Na site, Na(2) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted NaO6 pentagonal pyramids that share corners with two equivalent Na(1)O6 pentagonal pyramids, corners with two equivalent Na(2)O6 pentagonal pyramids, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, edges with two equivalent Na(1)O6 pentagonal pyramids, and  an edgeedge with one P(1)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Na(2)O6 pentagonal pyramids, corners with three equivalent Na(1)O6 pentagonal pyramids, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Na(2)O6 pentagonal pyramid. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Na(1)O6 pentagonal pyramids, corners with three equivalent Na(2)O6 pentagonal pyramids, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one Na(1)O6 pentagonal pyramid. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one P(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 Na(2), and one P(2) atom. In the fourth O site, O(4) is bonded to one Na(2), two equivalent Na(1), and one P(2) atom to form distorted edge-sharing ONa3P tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(2), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one P(1), and one P(2) atom. is represented by the CIF card [CIF]
data_NaPO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.951
_cell_length_b   7.597
_cell_length_c   13.073
_cell_angle_alpha   58.778
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   505.431
_cell_formula_units_Z   8
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  0.672  0.812  0.001  1.0
  Na  Na1  1  0.172  0.188  0.499  1.0
  Na  Na2  1  0.570  0.195  0.697  1.0
  Na  Na3  1  0.430  0.805  0.303  1.0
  Na  Na4  1  0.328  0.188  0.999  1.0
  Na  Na5  1  0.070  0.805  0.803  1.0
  Na  Na6  1  0.930  0.195  0.197  1.0
  Na  Na7  1  0.828  0.812  0.501  1.0
  P  P8  1  0.076  0.341  0.689  1.0
  P  P9  1  0.576  0.659  0.811  1.0
  P  P10  1  0.845  0.277  0.905  1.0
  P  P11  1  0.424  0.341  0.189  1.0
  P  P12  1  0.924  0.659  0.311  1.0
  P  P13  1  0.655  0.277  0.405  1.0
  P  P14  1  0.345  0.723  0.595  1.0
  P  P15  1  0.155  0.723  0.095  1.0
  O  O16  1  0.627  0.454  0.122  1.0
  O  O17  1  0.554  0.715  0.675  1.0
  O  O18  1  0.563  0.190  0.526  1.0
  O  O19  1  0.144  0.820  0.615  1.0
  O  O20  1  0.350  0.154  0.190  1.0
  O  O21  1  0.127  0.546  0.378  1.0
  O  O22  1  0.856  0.180  0.385  1.0
  O  O23  1  0.798  0.518  0.849  1.0
  O  O24  1  0.054  0.285  0.825  1.0
  O  O25  1  0.150  0.154  0.690  1.0
  O  O26  1  0.202  0.482  0.151  1.0
  O  O27  1  0.650  0.846  0.810  1.0
  O  O28  1  0.850  0.846  0.310  1.0
  O  O29  1  0.946  0.715  0.175  1.0
  O  O30  1  0.437  0.810  0.474  1.0
  O  O31  1  0.298  0.482  0.651  1.0
  O  O32  1  0.446  0.285  0.325  1.0
  O  O33  1  0.702  0.518  0.349  1.0
  O  O34  1  0.063  0.810  0.974  1.0
  O  O35  1  0.937  0.190  0.026  1.0
  O  O36  1  0.644  0.180  0.885  1.0
  O  O37  1  0.373  0.546  0.878  1.0
  O  O38  1  0.873  0.454  0.622  1.0
  O  O39  1  0.356  0.820  0.115  1.0
[/CIF]
.
The compound described by NaPO3 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted NaO6 pentagonal pyramids that share corners with two equivalent Na(2)O6 pentagonal pyramids, corners with two equivalent P(2)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Na(1)O6 pentagonal pyramid, edges with two equivalent Na(2)O6 pentagonal pyramids, and  an edgeedge with one P(2)O4 tetrahedra. In the second Na site, Na(2) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted NaO6 pentagonal pyramids that share corners with two equivalent Na(1)O6 pentagonal pyramids, corners with two equivalent Na(2)O6 pentagonal pyramids, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, edges with two equivalent Na(1)O6 pentagonal pyramids, and  an edgeedge with one P(1)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Na(2)O6 pentagonal pyramids, corners with three equivalent Na(1)O6 pentagonal pyramids, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Na(2)O6 pentagonal pyramid. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Na(1)O6 pentagonal pyramids, corners with three equivalent Na(2)O6 pentagonal pyramids, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one Na(1)O6 pentagonal pyramid. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one P(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 Na(2), and one P(2) atom. In the fourth O site, O(4) is bonded to one Na(2), two equivalent Na(1), and one P(2) atom to form distorted edge-sharing ONa3P tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(2), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one P(1), and one P(2) atom. is represented by the CIF card [CIF]
data_NaPO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.951
_cell_length_b   7.597
_cell_length_c   13.073
_cell_angle_alpha   58.778
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   505.431
_cell_formula_units_Z   8
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  0.672  0.812  0.001  1.0
  Na  Na1  1  0.172  0.188  0.499  1.0
  Na  Na2  1  0.570  0.195  0.697  1.0
  Na  Na3  1  0.430  0.805  0.303  1.0
  Na  Na4  1  0.328  0.188  0.999  1.0
  Na  Na5  1  0.070  0.805  0.803  1.0
  Na  Na6  1  0.930  0.195  0.197  1.0
  Na  Na7  1  0.828  0.812  0.501  1.0
  P  P8  1  0.076  0.341  0.689  1.0
  P  P9  1  0.576  0.659  0.811  1.0
  P  P10  1  0.845  0.277  0.905  1.0
  P  P11  1  0.424  0.341  0.189  1.0
  P  P12  1  0.924  0.659  0.311  1.0
  P  P13  1  0.655  0.277  0.405  1.0
  P  P14  1  0.345  0.723  0.595  1.0
  P  P15  1  0.155  0.723  0.095  1.0
  O  O16  1  0.627  0.454  0.122  1.0
  O  O17  1  0.554  0.715  0.675  1.0
  O  O18  1  0.563  0.190  0.526  1.0
  O  O19  1  0.144  0.820  0.615  1.0
  O  O20  1  0.350  0.154  0.190  1.0
  O  O21  1  0.127  0.546  0.378  1.0
  O  O22  1  0.856  0.180  0.385  1.0
  O  O23  1  0.798  0.518  0.849  1.0
  O  O24  1  0.054  0.285  0.825  1.0
  O  O25  1  0.150  0.154  0.690  1.0
  O  O26  1  0.202  0.482  0.151  1.0
  O  O27  1  0.650  0.846  0.810  1.0
  O  O28  1  0.850  0.846  0.310  1.0
  O  O29  1  0.946  0.715  0.175  1.0
  O  O30  1  0.437  0.810  0.474  1.0
  O  O31  1  0.298  0.482  0.651  1.0
  O  O32  1  0.446  0.285  0.325  1.0
  O  O33  1  0.702  0.518  0.349  1.0
  O  O34  1  0.063  0.810  0.974  1.0
  O  O35  1  0.937  0.190  0.026  1.0
  O  O36  1  0.644  0.180  0.885  1.0
  O  O37  1  0.373  0.546  0.878  1.0
  O  O38  1  0.873  0.454  0.622  1.0
  O  O39  1  0.356  0.820  0.115  1.0
[/CIF]
.