The structure described by NaMnO2 is H-Phase structured and crystallizes in the triclinic P1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded to three equivalent O(1) and three equivalent O(7) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(3)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra, edges with three equivalent Mn(3)O6 octahedra, edges with three equivalent Mn(4)O6 octahedra, and edges with six equivalent Na(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. In the second Na site, Na(2) is bonded to three equivalent O(2) and three equivalent O(8) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(2)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra, edges with three equivalent Mn(2)O6 octahedra, and edges with six equivalent Na(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. In the third Na site, Na(3) is bonded to three equivalent O(3) and three equivalent O(5) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra, edges with three equivalent Mn(2)O6 octahedra, edges with three equivalent Mn(3)O6 octahedra, and edges with six equivalent Na(3)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. In the fourth Na site, Na(4) is bonded to three equivalent O(4) and three equivalent O(6) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra, edges with three equivalent Mn(4)O6 octahedra, and edges with six equivalent Na(4)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent O(2) and three equivalent O(4) atoms to form MnO6 octahedra that share corners with three equivalent Na(2)O6 pentagonal pyramids, corners with three equivalent Na(4)O6 pentagonal pyramids, edges with six equivalent Mn(1)O6 octahedra, edges with three equivalent Na(2)O6 pentagonal pyramids, and edges with three equivalent Na(4)O6 pentagonal pyramids. In the second Mn site, Mn(2) is bonded to three equivalent O(5) and three equivalent O(8) atoms to form MnO6 octahedra that share corners with three equivalent Na(2)O6 pentagonal pyramids, corners with three equivalent Na(3)O6 pentagonal pyramids, edges with six equivalent Mn(2)O6 octahedra, edges with three equivalent Na(2)O6 pentagonal pyramids, and edges with three equivalent Na(3)O6 pentagonal pyramids. In the third Mn site, Mn(3) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form MnO6 octahedra that share corners with three equivalent Na(1)O6 pentagonal pyramids, corners with three equivalent Na(3)O6 pentagonal pyramids, edges with six equivalent Mn(3)O6 octahedra, edges with three equivalent Na(1)O6 pentagonal pyramids, and edges with three equivalent Na(3)O6 pentagonal pyramids. In the fourth Mn site, Mn(4) is bonded to three equivalent O(6) and three equivalent O(7) atoms to form MnO6 octahedra that share corners with three equivalent Na(1)O6 pentagonal pyramids, corners with three equivalent Na(4)O6 pentagonal pyramids, edges with six equivalent Mn(4)O6 octahedra, edges with three equivalent Na(1)O6 pentagonal pyramids, and edges with three equivalent Na(4)O6 pentagonal pyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Na(1) and three equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the second O site, O(2) is bonded to three equivalent Na(2) and three equivalent Mn(1) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the third O site, O(3) is bonded to three equivalent Na(3) and three equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the fourth O site, O(4) is bonded to three equivalent Na(4) and three equivalent Mn(1) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the fifth O site, O(5) is bonded to three equivalent Na(3) and three equivalent Mn(2) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the sixth O site, O(6) is bonded to three equivalent Na(4) and three equivalent Mn(4) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the seventh O site, O(7) is bonded to three equivalent Na(1) and three equivalent Mn(4) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the eighth O site, O(8) is bonded to three equivalent Na(2) and three equivalent Mn(2) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. is represented by the CIF file [CIF]
data_NaMnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.920
_cell_length_b   3.209
_cell_length_c   10.924
_cell_angle_alpha   90.048
_cell_angle_beta   90.132
_cell_angle_gamma   117.043
_symmetry_Int_Tables_number   1
_cell_volume   91.180
_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
  Mn  Mn0  1  0.999  1.000  0.500  1.0
  Mn  Mn1  1  0.001  0.001  0.000  1.0
  Na  Na2  1  0.700  0.396  0.750  1.0
  Na  Na3  1  0.300  0.603  0.250  1.0
  O  O4  1  0.375  0.750  0.602  1.0
  O  O5  1  0.624  0.250  0.398  1.0
  O  O6  1  0.626  0.250  0.102  1.0
  O  O7  1  0.375  0.750  0.898  1.0
[/CIF]
.
The structure described by NaMnO2 is H-Phase structured and crystallizes in the triclinic P1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded to three equivalent O(1) and three equivalent O(7) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(3)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra, edges with three equivalent Mn(3)O6 octahedra, edges with three equivalent Mn(4)O6 octahedra, and edges with six equivalent Na(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. In the second Na site, Na(2) is bonded to three equivalent O(2) and three equivalent O(8) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(2)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra, edges with three equivalent Mn(2)O6 octahedra, and edges with six equivalent Na(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. In the third Na site, Na(3) is bonded to three equivalent O(3) and three equivalent O(5) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra, edges with three equivalent Mn(2)O6 octahedra, edges with three equivalent Mn(3)O6 octahedra, and edges with six equivalent Na(3)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. In the fourth Na site, Na(4) is bonded to three equivalent O(4) and three equivalent O(6) atoms to form distorted NaO6 pentagonal pyramids that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra, edges with three equivalent Mn(4)O6 octahedra, and edges with six equivalent Na(4)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 10-14°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent O(2) and three equivalent O(4) atoms to form MnO6 octahedra that share corners with three equivalent Na(2)O6 pentagonal pyramids, corners with three equivalent Na(4)O6 pentagonal pyramids, edges with six equivalent Mn(1)O6 octahedra, edges with three equivalent Na(2)O6 pentagonal pyramids, and edges with three equivalent Na(4)O6 pentagonal pyramids. In the second Mn site, Mn(2) is bonded to three equivalent O(5) and three equivalent O(8) atoms to form MnO6 octahedra that share corners with three equivalent Na(2)O6 pentagonal pyramids, corners with three equivalent Na(3)O6 pentagonal pyramids, edges with six equivalent Mn(2)O6 octahedra, edges with three equivalent Na(2)O6 pentagonal pyramids, and edges with three equivalent Na(3)O6 pentagonal pyramids. In the third Mn site, Mn(3) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form MnO6 octahedra that share corners with three equivalent Na(1)O6 pentagonal pyramids, corners with three equivalent Na(3)O6 pentagonal pyramids, edges with six equivalent Mn(3)O6 octahedra, edges with three equivalent Na(1)O6 pentagonal pyramids, and edges with three equivalent Na(3)O6 pentagonal pyramids. In the fourth Mn site, Mn(4) is bonded to three equivalent O(6) and three equivalent O(7) atoms to form MnO6 octahedra that share corners with three equivalent Na(1)O6 pentagonal pyramids, corners with three equivalent Na(4)O6 pentagonal pyramids, edges with six equivalent Mn(4)O6 octahedra, edges with three equivalent Na(1)O6 pentagonal pyramids, and edges with three equivalent Na(4)O6 pentagonal pyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Na(1) and three equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the second O site, O(2) is bonded to three equivalent Na(2) and three equivalent Mn(1) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the third O site, O(3) is bonded to three equivalent Na(3) and three equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the fourth O site, O(4) is bonded to three equivalent Na(4) and three equivalent Mn(1) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the fifth O site, O(5) is bonded to three equivalent Na(3) and three equivalent Mn(2) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the sixth O site, O(6) is bonded to three equivalent Na(4) and three equivalent Mn(4) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the seventh O site, O(7) is bonded to three equivalent Na(1) and three equivalent Mn(4) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the eighth O site, O(8) is bonded to three equivalent Na(2) and three equivalent Mn(2) atoms to form a mixture of corner, edge, and face-sharing ONa3Mn3 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. is represented by the CIF file [CIF]
data_NaMnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.920
_cell_length_b   3.209
_cell_length_c   10.924
_cell_angle_alpha   90.048
_cell_angle_beta   90.132
_cell_angle_gamma   117.043
_symmetry_Int_Tables_number   1
_cell_volume   91.180
_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
  Mn  Mn0  1  0.999  1.000  0.500  1.0
  Mn  Mn1  1  0.001  0.001  0.000  1.0
  Na  Na2  1  0.700  0.396  0.750  1.0
  Na  Na3  1  0.300  0.603  0.250  1.0
  O  O4  1  0.375  0.750  0.602  1.0
  O  O5  1  0.624  0.250  0.398  1.0
  O  O6  1  0.626  0.250  0.102  1.0
  O  O7  1  0.375  0.750  0.898  1.0
[/CIF]
.