The material structure described by Na2ZnO2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to four equivalent O(1) atoms to form distorted NaO4 tetrahedra that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Zn(1)O4 tetrahedra, and edges with four equivalent Na(1)O4 tetrahedra. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to two equivalent O(1) and three equivalent O(2) atoms. Zn(1) is bonded to one O(1) and three equivalent O(2) atoms to form distorted ZnO4 tetrahedra that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Zn(1)O4 tetrahedra, and  an edgeedge with one Zn(1)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to two equivalent Na(2), four equivalent Na(1), and one Zn(1) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent Na(2) and three equivalent Zn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2ZnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.949
_cell_length_b   5.673
_cell_length_c   7.676
_cell_angle_alpha   84.927
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   258.033
_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  0.742  0.009  0.972  1.0
  Na  Na1  1  0.242  0.491  0.028  1.0
  Na  Na2  1  0.258  0.991  0.028  1.0
  Na  Na3  1  0.758  0.509  0.972  1.0
  Na  Na4  1  0.354  0.431  0.675  1.0
  Na  Na5  1  0.854  0.069  0.325  1.0
  Na  Na6  1  0.646  0.569  0.325  1.0
  Na  Na7  1  0.146  0.931  0.675  1.0
  Zn  Zn8  1  0.607  0.857  0.635  1.0
  Zn  Zn9  1  0.107  0.643  0.365  1.0
  Zn  Zn10  1  0.393  0.143  0.365  1.0
  Zn  Zn11  1  0.893  0.357  0.635  1.0
  O  O12  1  0.036  0.252  0.852  1.0
  O  O13  1  0.536  0.248  0.148  1.0
  O  O14  1  0.964  0.748  0.148  1.0
  O  O15  1  0.464  0.752  0.852  1.0
  O  O16  1  0.878  0.702  0.561  1.0
  O  O17  1  0.378  0.798  0.439  1.0
  O  O18  1  0.122  0.298  0.439  1.0
  O  O19  1  0.622  0.202  0.561  1.0
[/CIF]
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The material structure described by Na2ZnO2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to four equivalent O(1) atoms to form distorted NaO4 tetrahedra that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Zn(1)O4 tetrahedra, and edges with four equivalent Na(1)O4 tetrahedra. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to two equivalent O(1) and three equivalent O(2) atoms. Zn(1) is bonded to one O(1) and three equivalent O(2) atoms to form distorted ZnO4 tetrahedra that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Zn(1)O4 tetrahedra, and  an edgeedge with one Zn(1)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to two equivalent Na(2), four equivalent Na(1), and one Zn(1) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent Na(2) and three equivalent Zn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2ZnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.949
_cell_length_b   5.673
_cell_length_c   7.676
_cell_angle_alpha   84.927
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   258.033
_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  0.742  0.009  0.972  1.0
  Na  Na1  1  0.242  0.491  0.028  1.0
  Na  Na2  1  0.258  0.991  0.028  1.0
  Na  Na3  1  0.758  0.509  0.972  1.0
  Na  Na4  1  0.354  0.431  0.675  1.0
  Na  Na5  1  0.854  0.069  0.325  1.0
  Na  Na6  1  0.646  0.569  0.325  1.0
  Na  Na7  1  0.146  0.931  0.675  1.0
  Zn  Zn8  1  0.607  0.857  0.635  1.0
  Zn  Zn9  1  0.107  0.643  0.365  1.0
  Zn  Zn10  1  0.393  0.143  0.365  1.0
  Zn  Zn11  1  0.893  0.357  0.635  1.0
  O  O12  1  0.036  0.252  0.852  1.0
  O  O13  1  0.536  0.248  0.148  1.0
  O  O14  1  0.964  0.748  0.148  1.0
  O  O15  1  0.464  0.752  0.852  1.0
  O  O16  1  0.878  0.702  0.561  1.0
  O  O17  1  0.378  0.798  0.439  1.0
  O  O18  1  0.122  0.298  0.439  1.0
  O  O19  1  0.622  0.202  0.561  1.0
[/CIF]
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