The structure described by Na2PrO3 is Caswellsilverite-like structured and crystallizes in the monoclinic C2/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(2)O6 octahedra, corners with four equivalent Pr(1)O6 octahedra, edges with three equivalent Na(1)O6 octahedra, edges with four equivalent Pr(1)O6 octahedra, and edges with five equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-10°. In the second Na site, Na(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 octahedra, corners with two equivalent Pr(1)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, edges with five equivalent Na(1)O6 octahedra, and edges with five equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-9°. Pr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form PrO6 octahedra that share corners with two equivalent Na(2)O6 octahedra, corners with four equivalent Na(1)O6 octahedra, edges with three equivalent Pr(1)O6 octahedra, edges with four equivalent Na(1)O6 octahedra, and edges with five equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-10°. There are three inequivalent O sites. In the first O site, O(3) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pr(1) atoms to form a mixture of corner and edge-sharing ONa4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. In the second O site, O(1) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pr(1) atoms to form a mixture of corner and edge-sharing ONa4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. In the third O site, O(2) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pr(1) atoms to form a mixture of corner and edge-sharing ONa4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 4-7°. is represented by the CIF file [CIF]
data_Na2PrO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.083
_cell_length_b   6.083
_cell_length_c   11.322
_cell_angle_alpha   79.893
_cell_angle_beta   79.893
_cell_angle_gamma   109.816
_symmetry_Int_Tables_number   1
_cell_volume   375.384
_cell_formula_units_Z   4
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  0.695  0.456  0.095  1.0
  Na  Na1  1  0.624  0.875  0.259  1.0
  Na  Na2  1  0.875  0.624  0.759  1.0
  Na  Na3  1  0.376  0.125  0.741  1.0
  Na  Na4  1  0.305  0.544  0.905  1.0
  Na  Na5  1  0.456  0.695  0.595  1.0
  Na  Na6  1  0.544  0.305  0.405  1.0
  Na  Na7  1  0.125  0.376  0.241  1.0
  Pr  Pr8  1  0.206  0.953  0.086  1.0
  Pr  Pr9  1  0.047  0.794  0.414  1.0
  Pr  Pr10  1  0.794  0.047  0.914  1.0
  Pr  Pr11  1  0.953  0.206  0.586  1.0
  O  O12  1  0.547  0.267  0.929  1.0
  O  O13  1  0.733  0.453  0.571  1.0
  O  O14  1  0.453  0.733  0.071  1.0
  O  O15  1  0.267  0.547  0.429  1.0
  O  O16  1  0.354  0.104  0.250  1.0
  O  O17  1  0.896  0.646  0.250  1.0
  O  O18  1  0.646  0.896  0.750  1.0
  O  O19  1  0.104  0.354  0.750  1.0
  O  O20  1  0.804  0.019  0.429  1.0
  O  O21  1  0.019  0.804  0.929  1.0
  O  O22  1  0.196  0.981  0.571  1.0
  O  O23  1  0.981  0.196  0.071  1.0
[/CIF]
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The structure described by Na2PrO3 is Caswellsilverite-like structured and crystallizes in the monoclinic C2/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(2)O6 octahedra, corners with four equivalent Pr(1)O6 octahedra, edges with three equivalent Na(1)O6 octahedra, edges with four equivalent Pr(1)O6 octahedra, and edges with five equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-10°. In the second Na site, Na(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 octahedra, corners with two equivalent Pr(1)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, edges with five equivalent Na(1)O6 octahedra, and edges with five equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-9°. Pr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form PrO6 octahedra that share corners with two equivalent Na(2)O6 octahedra, corners with four equivalent Na(1)O6 octahedra, edges with three equivalent Pr(1)O6 octahedra, edges with four equivalent Na(1)O6 octahedra, and edges with five equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-10°. There are three inequivalent O sites. In the first O site, O(3) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pr(1) atoms to form a mixture of corner and edge-sharing ONa4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. In the second O site, O(1) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pr(1) atoms to form a mixture of corner and edge-sharing ONa4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. In the third O site, O(2) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pr(1) atoms to form a mixture of corner and edge-sharing ONa4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 4-7°. is represented by the CIF file [CIF]
data_Na2PrO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.083
_cell_length_b   6.083
_cell_length_c   11.322
_cell_angle_alpha   79.893
_cell_angle_beta   79.893
_cell_angle_gamma   109.816
_symmetry_Int_Tables_number   1
_cell_volume   375.384
_cell_formula_units_Z   4
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  0.695  0.456  0.095  1.0
  Na  Na1  1  0.624  0.875  0.259  1.0
  Na  Na2  1  0.875  0.624  0.759  1.0
  Na  Na3  1  0.376  0.125  0.741  1.0
  Na  Na4  1  0.305  0.544  0.905  1.0
  Na  Na5  1  0.456  0.695  0.595  1.0
  Na  Na6  1  0.544  0.305  0.405  1.0
  Na  Na7  1  0.125  0.376  0.241  1.0
  Pr  Pr8  1  0.206  0.953  0.086  1.0
  Pr  Pr9  1  0.047  0.794  0.414  1.0
  Pr  Pr10  1  0.794  0.047  0.914  1.0
  Pr  Pr11  1  0.953  0.206  0.586  1.0
  O  O12  1  0.547  0.267  0.929  1.0
  O  O13  1  0.733  0.453  0.571  1.0
  O  O14  1  0.453  0.733  0.071  1.0
  O  O15  1  0.267  0.547  0.429  1.0
  O  O16  1  0.354  0.104  0.250  1.0
  O  O17  1  0.896  0.646  0.250  1.0
  O  O18  1  0.646  0.896  0.750  1.0
  O  O19  1  0.104  0.354  0.750  1.0
  O  O20  1  0.804  0.019  0.429  1.0
  O  O21  1  0.019  0.804  0.929  1.0
  O  O22  1  0.196  0.981  0.571  1.0
  O  O23  1  0.981  0.196  0.071  1.0
[/CIF]
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