The compound described by KNa2(PO3)3 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 5-coordinate geometry to one O(1), one O(6), one O(8), and two equivalent O(9) atoms. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(6), one O(8), and two equivalent O(7) atoms to form distorted NaO5 square pyramids 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(2)O6 octahedra, and  an edgeedge with one Na(1)O5 square pyramid. In the second Na site, Na(2) is bonded to one O(1), one O(6), one O(7), one O(9), and two equivalent O(5) 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 two equivalent Na(1)O5 square pyramids. 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(5) atom to form PO4 tetrahedra that share corners with three equivalent Na(2)O6 octahedra,  a cornercorner with one Na(1)O5 square pyramid,  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 49-54°. In the second P site, P(2) is bonded to one O(3), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with three equivalent Na(1)O5 square pyramids,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the third P site, P(3) is bonded to one O(2), one O(4), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Na(2)O6 octahedra,  a cornercorner with one Na(1)O5 square pyramid,  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 43-57°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(1), one Na(1), one Na(2), and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Na(2) and one P(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one K(1), one Na(1), one Na(2), and one P(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one Na(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to two equivalent K(1), one Na(2), and one P(3) atom. is represented by the CIF card [CIF]
data_KNa2(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.853
_cell_length_b   7.060
_cell_length_c   9.601
_cell_angle_alpha   87.080
_cell_angle_beta   109.376
_cell_angle_gamma   104.555
_symmetry_Int_Tables_number   1
_cell_volume   423.842
_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
  K  K0  1  0.851  0.961  0.167  1.0
  K  K1  1  0.149  0.039  0.833  1.0
  Na  Na2  1  0.283  0.289  0.510  1.0
  Na  Na3  1  0.768  0.421  0.831  1.0
  Na  Na4  1  0.232  0.579  0.169  1.0
  Na  Na5  1  0.717  0.711  0.490  1.0
  P  P6  1  0.290  0.544  0.804  1.0
  P  P7  1  0.759  0.245  0.473  1.0
  P  P8  1  0.623  0.881  0.783  1.0
  P  P9  1  0.377  0.119  0.217  1.0
  P  P10  1  0.710  0.456  0.196  1.0
  P  P11  1  0.241  0.755  0.527  1.0
  O  O12  1  0.388  0.393  0.769  1.0
  O  O13  1  0.612  0.607  0.231  1.0
  O  O14  1  0.476  0.745  0.873  1.0
  O  O15  1  0.524  0.255  0.127  1.0
  O  O16  1  0.151  0.627  0.650  1.0
  O  O17  1  0.849  0.373  0.350  1.0
  O  O18  1  0.434  0.926  0.637  1.0
  O  O19  1  0.566  0.074  0.363  1.0
  O  O20  1  0.153  0.496  0.900  1.0
  O  O21  1  0.847  0.504  0.100  1.0
  O  O22  1  0.751  0.764  0.741  1.0
  O  O23  1  0.249  0.236  0.259  1.0
  O  O24  1  0.666  0.364  0.547  1.0
  O  O25  1  0.334  0.636  0.453  1.0
  O  O26  1  0.930  0.149  0.560  1.0
  O  O27  1  0.070  0.851  0.440  1.0
  O  O28  1  0.265  0.932  0.128  1.0
  O  O29  1  0.735  0.068  0.872  1.0
[/CIF]
.
The compound described by KNa2(PO3)3 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 5-coordinate geometry to one O(1), one O(6), one O(8), and two equivalent O(9) atoms. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(6), one O(8), and two equivalent O(7) atoms to form distorted NaO5 square pyramids 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(2)O6 octahedra, and  an edgeedge with one Na(1)O5 square pyramid. In the second Na site, Na(2) is bonded to one O(1), one O(6), one O(7), one O(9), and two equivalent O(5) 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 two equivalent Na(1)O5 square pyramids. 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(5) atom to form PO4 tetrahedra that share corners with three equivalent Na(2)O6 octahedra,  a cornercorner with one Na(1)O5 square pyramid,  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 49-54°. In the second P site, P(2) is bonded to one O(3), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra, corners with three equivalent Na(1)O5 square pyramids,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the third P site, P(3) is bonded to one O(2), one O(4), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Na(2)O6 octahedra,  a cornercorner with one Na(1)O5 square pyramid,  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 43-57°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(1), one Na(1), one Na(2), and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Na(2) and one P(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one K(1), one Na(1), one Na(2), and one P(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one Na(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to two equivalent K(1), one Na(2), and one P(3) atom. is represented by the CIF card [CIF]
data_KNa2(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.853
_cell_length_b   7.060
_cell_length_c   9.601
_cell_angle_alpha   87.080
_cell_angle_beta   109.376
_cell_angle_gamma   104.555
_symmetry_Int_Tables_number   1
_cell_volume   423.842
_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
  K  K0  1  0.851  0.961  0.167  1.0
  K  K1  1  0.149  0.039  0.833  1.0
  Na  Na2  1  0.283  0.289  0.510  1.0
  Na  Na3  1  0.768  0.421  0.831  1.0
  Na  Na4  1  0.232  0.579  0.169  1.0
  Na  Na5  1  0.717  0.711  0.490  1.0
  P  P6  1  0.290  0.544  0.804  1.0
  P  P7  1  0.759  0.245  0.473  1.0
  P  P8  1  0.623  0.881  0.783  1.0
  P  P9  1  0.377  0.119  0.217  1.0
  P  P10  1  0.710  0.456  0.196  1.0
  P  P11  1  0.241  0.755  0.527  1.0
  O  O12  1  0.388  0.393  0.769  1.0
  O  O13  1  0.612  0.607  0.231  1.0
  O  O14  1  0.476  0.745  0.873  1.0
  O  O15  1  0.524  0.255  0.127  1.0
  O  O16  1  0.151  0.627  0.650  1.0
  O  O17  1  0.849  0.373  0.350  1.0
  O  O18  1  0.434  0.926  0.637  1.0
  O  O19  1  0.566  0.074  0.363  1.0
  O  O20  1  0.153  0.496  0.900  1.0
  O  O21  1  0.847  0.504  0.100  1.0
  O  O22  1  0.751  0.764  0.741  1.0
  O  O23  1  0.249  0.236  0.259  1.0
  O  O24  1  0.666  0.364  0.547  1.0
  O  O25  1  0.334  0.636  0.453  1.0
  O  O26  1  0.930  0.149  0.560  1.0
  O  O27  1  0.070  0.851  0.440  1.0
  O  O28  1  0.265  0.932  0.128  1.0
  O  O29  1  0.735  0.068  0.872  1.0
[/CIF]
.