The compound described by Na2PtO3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Fddd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1) and four equivalent O(2) 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 Pt(1)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with five equivalent Na(2)O6 octahedra, and edges with five equivalent Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-13°. In the second Na site, Na(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Pt(1)O6 octahedra, edges with three equivalent Na(2)O6 octahedra, edges with four equivalent Pt(1)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-13°. Pt(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form PtO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Na(2)O6 octahedra, edges with three equivalent Pt(1)O6 octahedra, edges with four equivalent Na(2)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles are 10°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pt(1) atoms to form a mixture of edge and corner-sharing ONa4Pt2 octahedra. The corner-sharing octahedral tilt angles range from 5-7°. In the second O site, O(2) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pt(1) atoms to form a mixture of edge and corner-sharing ONa4Pt2 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. is represented by the CIF card [CIF]
data_Na2PtO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.386
_cell_length_b   9.902
_cell_length_c   5.483
_cell_angle_alpha   79.260
_cell_angle_beta   69.499
_cell_angle_gamma   31.241
_symmetry_Int_Tables_number   1
_cell_volume   266.371
_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  0.244  0.244  0.756  1.0
  Na  Na1  1  0.920  0.920  0.080  1.0
  Na  Na2  1  0.006  0.006  0.494  1.0
  Na  Na3  1  0.494  0.494  0.006  1.0
  Na  Na4  1  0.170  0.170  0.330  1.0
  Na  Na5  1  0.330  0.330  0.170  1.0
  Na  Na6  1  0.756  0.756  0.244  1.0
  Na  Na7  1  0.080  0.080  0.920  1.0
  Pt  Pt8  1  0.584  0.584  0.416  1.0
  Pt  Pt9  1  0.666  0.666  0.834  1.0
  Pt  Pt10  1  0.416  0.416  0.584  1.0
  Pt  Pt11  1  0.834  0.834  0.666  1.0
  O  O12  1  0.289  0.711  0.711  1.0
  O  O13  1  0.664  0.158  0.797  1.0
  O  O14  1  0.158  0.664  0.381  1.0
  O  O15  1  0.797  0.381  0.664  1.0
  O  O16  1  0.092  0.586  0.869  1.0
  O  O17  1  0.381  0.797  0.158  1.0
  O  O18  1  0.586  0.092  0.453  1.0
  O  O19  1  0.539  0.961  0.961  1.0
  O  O20  1  0.453  0.869  0.586  1.0
  O  O21  1  0.869  0.453  0.092  1.0
  O  O22  1  0.961  0.539  0.539  1.0
  O  O23  1  0.711  0.289  0.289  1.0
[/CIF]
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The compound described by Na2PtO3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Fddd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1) and four equivalent O(2) 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 Pt(1)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with five equivalent Na(2)O6 octahedra, and edges with five equivalent Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-13°. In the second Na site, Na(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Pt(1)O6 octahedra, edges with three equivalent Na(2)O6 octahedra, edges with four equivalent Pt(1)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-13°. Pt(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form PtO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Na(2)O6 octahedra, edges with three equivalent Pt(1)O6 octahedra, edges with four equivalent Na(2)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles are 10°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pt(1) atoms to form a mixture of edge and corner-sharing ONa4Pt2 octahedra. The corner-sharing octahedral tilt angles range from 5-7°. In the second O site, O(2) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Pt(1) atoms to form a mixture of edge and corner-sharing ONa4Pt2 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. is represented by the CIF card [CIF]
data_Na2PtO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.386
_cell_length_b   9.902
_cell_length_c   5.483
_cell_angle_alpha   79.260
_cell_angle_beta   69.499
_cell_angle_gamma   31.241
_symmetry_Int_Tables_number   1
_cell_volume   266.371
_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  0.244  0.244  0.756  1.0
  Na  Na1  1  0.920  0.920  0.080  1.0
  Na  Na2  1  0.006  0.006  0.494  1.0
  Na  Na3  1  0.494  0.494  0.006  1.0
  Na  Na4  1  0.170  0.170  0.330  1.0
  Na  Na5  1  0.330  0.330  0.170  1.0
  Na  Na6  1  0.756  0.756  0.244  1.0
  Na  Na7  1  0.080  0.080  0.920  1.0
  Pt  Pt8  1  0.584  0.584  0.416  1.0
  Pt  Pt9  1  0.666  0.666  0.834  1.0
  Pt  Pt10  1  0.416  0.416  0.584  1.0
  Pt  Pt11  1  0.834  0.834  0.666  1.0
  O  O12  1  0.289  0.711  0.711  1.0
  O  O13  1  0.664  0.158  0.797  1.0
  O  O14  1  0.158  0.664  0.381  1.0
  O  O15  1  0.797  0.381  0.664  1.0
  O  O16  1  0.092  0.586  0.869  1.0
  O  O17  1  0.381  0.797  0.158  1.0
  O  O18  1  0.586  0.092  0.453  1.0
  O  O19  1  0.539  0.961  0.961  1.0
  O  O20  1  0.453  0.869  0.586  1.0
  O  O21  1  0.869  0.453  0.092  1.0
  O  O22  1  0.961  0.539  0.539  1.0
  O  O23  1  0.711  0.289  0.289  1.0
[/CIF]
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