The structure described by NaCu3O4 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted square co-planar geometry to one Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to one Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. is represented by the CIF file [CIF]
data_NaCu3O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.435
_cell_length_b   5.895
_cell_length_c   3.710
_cell_angle_alpha   84.629
_cell_angle_beta   91.388
_cell_angle_gamma   64.670
_symmetry_Int_Tables_number   1
_cell_volume   106.700
_cell_formula_units_Z   1
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  0.001  0.999  0.498  1.0
  Cu  Cu1  1  0.246  0.516  0.028  1.0
  Cu  Cu2  1  0.757  0.479  0.964  1.0
  Cu  Cu3  1  0.502  0.997  0.997  1.0
  O  O4  1  0.397  0.741  0.886  1.0
  O  O5  1  0.873  0.740  0.936  1.0
  O  O6  1  0.130  0.254  0.054  1.0
  O  O7  1  0.605  0.253  0.107  1.0
[/CIF]
.
The structure described by NaCu3O4 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted square co-planar geometry to one Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to one Na(1), one Cu(1), one Cu(2), and one Cu(3) atom. is represented by the CIF file [CIF]
data_NaCu3O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.435
_cell_length_b   5.895
_cell_length_c   3.710
_cell_angle_alpha   84.629
_cell_angle_beta   91.388
_cell_angle_gamma   64.670
_symmetry_Int_Tables_number   1
_cell_volume   106.700
_cell_formula_units_Z   1
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  0.001  0.999  0.498  1.0
  Cu  Cu1  1  0.246  0.516  0.028  1.0
  Cu  Cu2  1  0.757  0.479  0.964  1.0
  Cu  Cu3  1  0.502  0.997  0.997  1.0
  O  O4  1  0.397  0.741  0.886  1.0
  O  O5  1  0.873  0.740  0.936  1.0
  O  O6  1  0.130  0.254  0.054  1.0
  O  O7  1  0.605  0.253  0.107  1.0
[/CIF]
.