The material described by NaPO3 crystallizes in the triclinic P-1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted NaO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, edges with two equivalent Na(2)O6 octahedra, edges with two equivalent Na(3)O6 octahedra, and  an edgeedge with one P(3)O4 tetrahedra. In the second Na site, Na(2) is bonded to one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form NaO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Na(3)O6 octahedra, and  an edgeedge with one P(3)O4 tetrahedra. In the third Na site, Na(3) is bonded to one O(8), one O(9), two equivalent O(1), and two equivalent O(2) atoms to form NaO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, and edges with two equivalent Na(3)O6 octahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Na(3)O6 octahedra, corners with three equivalent Na(1)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 42-69°. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Na(1)O6 octahedra, corners with two equivalent Na(3)O6 octahedra, corners with three equivalent Na(2)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 39-69°. 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  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Na(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra, and  an edgeedge with one Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-62°. 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(3), 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(3), and one P(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one P(1), and one P(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(2), one P(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Na(1), one Na(2), one Na(3), 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. is represented by the CIF file [CIF]
data_NaPO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.987
_cell_length_b   7.036
_cell_length_c   7.791
_cell_angle_alpha   93.447
_cell_angle_beta   103.121
_cell_angle_gamma   90.037
_symmetry_Int_Tables_number   1
_cell_volume   372.316
_cell_formula_units_Z   6
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  0.577  0.756  0.797  1.0
  Na  Na1  1  0.423  0.244  0.203  1.0
  Na  Na2  1  0.055  0.749  0.779  1.0
  Na  Na3  1  0.945  0.251  0.221  1.0
  Na  Na4  1  0.257  0.978  0.514  1.0
  Na  Na5  1  0.743  0.022  0.486  1.0
  P  P6  1  0.621  0.236  0.822  1.0
  P  P7  1  0.379  0.764  0.178  1.0
  P  P8  1  0.042  0.235  0.819  1.0
  P  P9  1  0.958  0.765  0.181  1.0
  P  P10  1  0.281  0.446  0.615  1.0
  P  P11  1  0.719  0.554  0.385  1.0
  O  O12  1  0.558  0.062  0.704  1.0
  O  O13  1  0.442  0.938  0.296  1.0
  O  O14  1  0.045  0.061  0.702  1.0
  O  O15  1  0.955  0.939  0.298  1.0
  O  O16  1  0.366  0.766  0.986  1.0
  O  O17  1  0.634  0.234  0.014  1.0
  O  O18  1  0.871  0.768  0.989  1.0
  O  O19  1  0.129  0.232  0.011  1.0
  O  O20  1  0.824  0.315  0.790  1.0
  O  O21  1  0.176  0.685  0.210  1.0
  O  O22  1  0.491  0.413  0.744  1.0
  O  O23  1  0.509  0.587  0.256  1.0
  O  O24  1  0.134  0.412  0.742  1.0
  O  O25  1  0.866  0.588  0.258  1.0
  O  O26  1  0.274  0.655  0.593  1.0
  O  O27  1  0.726  0.345  0.407  1.0
  O  O28  1  0.758  0.693  0.540  1.0
  O  O29  1  0.242  0.307  0.460  1.0
[/CIF]
.
The material described by NaPO3 crystallizes in the triclinic P-1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted NaO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, edges with two equivalent Na(2)O6 octahedra, edges with two equivalent Na(3)O6 octahedra, and  an edgeedge with one P(3)O4 tetrahedra. In the second Na site, Na(2) is bonded to one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form NaO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Na(3)O6 octahedra, and  an edgeedge with one P(3)O4 tetrahedra. In the third Na site, Na(3) is bonded to one O(8), one O(9), two equivalent O(1), and two equivalent O(2) atoms to form NaO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, and edges with two equivalent Na(3)O6 octahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Na(3)O6 octahedra, corners with three equivalent Na(1)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 42-69°. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Na(1)O6 octahedra, corners with two equivalent Na(3)O6 octahedra, corners with three equivalent Na(2)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 39-69°. 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  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra, corners with two equivalent Na(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra, and  an edgeedge with one Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-62°. 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(3), 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(3), and one P(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one P(1), and one P(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(2), one P(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Na(1), one Na(2), one Na(3), 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. is represented by the CIF file [CIF]
data_NaPO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.987
_cell_length_b   7.036
_cell_length_c   7.791
_cell_angle_alpha   93.447
_cell_angle_beta   103.121
_cell_angle_gamma   90.037
_symmetry_Int_Tables_number   1
_cell_volume   372.316
_cell_formula_units_Z   6
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  0.577  0.756  0.797  1.0
  Na  Na1  1  0.423  0.244  0.203  1.0
  Na  Na2  1  0.055  0.749  0.779  1.0
  Na  Na3  1  0.945  0.251  0.221  1.0
  Na  Na4  1  0.257  0.978  0.514  1.0
  Na  Na5  1  0.743  0.022  0.486  1.0
  P  P6  1  0.621  0.236  0.822  1.0
  P  P7  1  0.379  0.764  0.178  1.0
  P  P8  1  0.042  0.235  0.819  1.0
  P  P9  1  0.958  0.765  0.181  1.0
  P  P10  1  0.281  0.446  0.615  1.0
  P  P11  1  0.719  0.554  0.385  1.0
  O  O12  1  0.558  0.062  0.704  1.0
  O  O13  1  0.442  0.938  0.296  1.0
  O  O14  1  0.045  0.061  0.702  1.0
  O  O15  1  0.955  0.939  0.298  1.0
  O  O16  1  0.366  0.766  0.986  1.0
  O  O17  1  0.634  0.234  0.014  1.0
  O  O18  1  0.871  0.768  0.989  1.0
  O  O19  1  0.129  0.232  0.011  1.0
  O  O20  1  0.824  0.315  0.790  1.0
  O  O21  1  0.176  0.685  0.210  1.0
  O  O22  1  0.491  0.413  0.744  1.0
  O  O23  1  0.509  0.587  0.256  1.0
  O  O24  1  0.134  0.412  0.742  1.0
  O  O25  1  0.866  0.588  0.258  1.0
  O  O26  1  0.274  0.655  0.593  1.0
  O  O27  1  0.726  0.345  0.407  1.0
  O  O28  1  0.758  0.693  0.540  1.0
  O  O29  1  0.242  0.307  0.460  1.0
[/CIF]
.