The structure described by Na3Cu5O4 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form distorted edge-sharing NaO4 trigonal pyramids. In the second Na site, Na(2) is bonded in a 2-coordinate geometry to two equivalent O(4) atoms. In the third Na site, Na(3) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted edge-sharing NaO4 tetrahedra. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(1) and one O(2) atom. In the second Cu site, Cu(2) is bonded in a linear geometry to one O(1) and one O(2) atom. In the third Cu site, Cu(3) is bonded in a linear geometry to one O(2) and one O(3) atom. In the fourth Cu site, Cu(4) is bonded in a linear geometry to one O(3) and one O(4) atom. In the fifth Cu site, Cu(5) is bonded in a linear geometry to 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 5-coordinate geometry to one Na(3), two equivalent Na(1), one Cu(1), and one Cu(2) atom. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Cu(1), one Cu(2), and one Cu(3) atom to form corner-sharing ONa2Cu3 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 23-68°. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Cu(3), one Cu(4), and one Cu(5) atom. In the fourth O site, O(4) is bonded to one Na(1), one Na(3), two equivalent Na(2), one Cu(4), and one Cu(5) atom to form distorted ONa4Cu2 octahedra that share corners with two equivalent O(2)Na2Cu3 trigonal bipyramids and  an edgeedge with one O(4)Na4Cu2 octahedra. is represented by the CIF card [CIF]
data_Na3Cu5O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.027
_cell_length_b   8.501
_cell_length_c   13.340
_cell_angle_alpha   73.188
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   762.836
_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  0.642  0.910  0.582  1.0
  Na  Na1  1  0.921  0.663  0.907  1.0
  Na  Na2  1  0.249  0.739  0.573  1.0
  Na  Na3  1  0.858  0.910  0.082  1.0
  Na  Na4  1  0.579  0.663  0.407  1.0
  Na  Na5  1  0.251  0.739  0.073  1.0
  Na  Na6  1  0.749  0.261  0.927  1.0
  Na  Na7  1  0.421  0.337  0.593  1.0
  Na  Na8  1  0.142  0.090  0.918  1.0
  Na  Na9  1  0.751  0.261  0.427  1.0
  Na  Na10  1  0.079  0.337  0.093  1.0
  Na  Na11  1  0.358  0.090  0.418  1.0
  Cu  Cu12  1  0.583  0.950  0.899  1.0
  Cu  Cu13  1  0.335  0.940  0.745  1.0
  Cu  Cu14  1  0.917  0.950  0.399  1.0
  Cu  Cu15  1  0.458  0.686  0.886  1.0
  Cu  Cu16  1  0.165  0.940  0.245  1.0
  Cu  Cu17  1  0.551  0.558  0.732  1.0
  Cu  Cu18  1  0.042  0.686  0.386  1.0
  Cu  Cu19  1  0.313  0.418  0.899  1.0
  Cu  Cu20  1  0.813  0.582  0.601  1.0
  Cu  Cu21  1  0.051  0.442  0.768  1.0
  Cu  Cu22  1  0.949  0.558  0.232  1.0
  Cu  Cu23  1  0.187  0.418  0.399  1.0
  Cu  Cu24  1  0.687  0.582  0.101  1.0
  Cu  Cu25  1  0.958  0.314  0.614  1.0
  Cu  Cu26  1  0.449  0.442  0.268  1.0
  Cu  Cu27  1  0.835  0.060  0.755  1.0
  Cu  Cu28  1  0.542  0.314  0.114  1.0
  Cu  Cu29  1  0.083  0.050  0.601  1.0
  Cu  Cu30  1  0.665  0.060  0.255  1.0
  Cu  Cu31  1  0.417  0.050  0.101  1.0
  O  O32  1  0.835  0.006  0.899  1.0
  O  O33  1  0.332  0.879  0.892  1.0
  O  O34  1  0.665  0.006  0.399  1.0
  O  O35  1  0.168  0.879  0.392  1.0
  O  O36  1  0.566  0.489  0.877  1.0
  O  O37  1  0.554  0.624  0.587  1.0
  O  O38  1  0.054  0.376  0.913  1.0
  O  O39  1  0.066  0.511  0.623  1.0
  O  O40  1  0.934  0.489  0.377  1.0
  O  O41  1  0.946  0.624  0.087  1.0
  O  O42  1  0.446  0.376  0.413  1.0
  O  O43  1  0.434  0.511  0.123  1.0
  O  O44  1  0.832  0.121  0.608  1.0
  O  O45  1  0.335  0.994  0.601  1.0
  O  O46  1  0.668  0.121  0.108  1.0
  O  O47  1  0.165  0.994  0.101  1.0
[/CIF]
.
The structure described by Na3Cu5O4 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form distorted edge-sharing NaO4 trigonal pyramids. In the second Na site, Na(2) is bonded in a 2-coordinate geometry to two equivalent O(4) atoms. In the third Na site, Na(3) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted edge-sharing NaO4 tetrahedra. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(1) and one O(2) atom. In the second Cu site, Cu(2) is bonded in a linear geometry to one O(1) and one O(2) atom. In the third Cu site, Cu(3) is bonded in a linear geometry to one O(2) and one O(3) atom. In the fourth Cu site, Cu(4) is bonded in a linear geometry to one O(3) and one O(4) atom. In the fifth Cu site, Cu(5) is bonded in a linear geometry to 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 5-coordinate geometry to one Na(3), two equivalent Na(1), one Cu(1), and one Cu(2) atom. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Cu(1), one Cu(2), and one Cu(3) atom to form corner-sharing ONa2Cu3 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 23-68°. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Cu(3), one Cu(4), and one Cu(5) atom. In the fourth O site, O(4) is bonded to one Na(1), one Na(3), two equivalent Na(2), one Cu(4), and one Cu(5) atom to form distorted ONa4Cu2 octahedra that share corners with two equivalent O(2)Na2Cu3 trigonal bipyramids and  an edgeedge with one O(4)Na4Cu2 octahedra. is represented by the CIF card [CIF]
data_Na3Cu5O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.027
_cell_length_b   8.501
_cell_length_c   13.340
_cell_angle_alpha   73.188
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   762.836
_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  0.642  0.910  0.582  1.0
  Na  Na1  1  0.921  0.663  0.907  1.0
  Na  Na2  1  0.249  0.739  0.573  1.0
  Na  Na3  1  0.858  0.910  0.082  1.0
  Na  Na4  1  0.579  0.663  0.407  1.0
  Na  Na5  1  0.251  0.739  0.073  1.0
  Na  Na6  1  0.749  0.261  0.927  1.0
  Na  Na7  1  0.421  0.337  0.593  1.0
  Na  Na8  1  0.142  0.090  0.918  1.0
  Na  Na9  1  0.751  0.261  0.427  1.0
  Na  Na10  1  0.079  0.337  0.093  1.0
  Na  Na11  1  0.358  0.090  0.418  1.0
  Cu  Cu12  1  0.583  0.950  0.899  1.0
  Cu  Cu13  1  0.335  0.940  0.745  1.0
  Cu  Cu14  1  0.917  0.950  0.399  1.0
  Cu  Cu15  1  0.458  0.686  0.886  1.0
  Cu  Cu16  1  0.165  0.940  0.245  1.0
  Cu  Cu17  1  0.551  0.558  0.732  1.0
  Cu  Cu18  1  0.042  0.686  0.386  1.0
  Cu  Cu19  1  0.313  0.418  0.899  1.0
  Cu  Cu20  1  0.813  0.582  0.601  1.0
  Cu  Cu21  1  0.051  0.442  0.768  1.0
  Cu  Cu22  1  0.949  0.558  0.232  1.0
  Cu  Cu23  1  0.187  0.418  0.399  1.0
  Cu  Cu24  1  0.687  0.582  0.101  1.0
  Cu  Cu25  1  0.958  0.314  0.614  1.0
  Cu  Cu26  1  0.449  0.442  0.268  1.0
  Cu  Cu27  1  0.835  0.060  0.755  1.0
  Cu  Cu28  1  0.542  0.314  0.114  1.0
  Cu  Cu29  1  0.083  0.050  0.601  1.0
  Cu  Cu30  1  0.665  0.060  0.255  1.0
  Cu  Cu31  1  0.417  0.050  0.101  1.0
  O  O32  1  0.835  0.006  0.899  1.0
  O  O33  1  0.332  0.879  0.892  1.0
  O  O34  1  0.665  0.006  0.399  1.0
  O  O35  1  0.168  0.879  0.392  1.0
  O  O36  1  0.566  0.489  0.877  1.0
  O  O37  1  0.554  0.624  0.587  1.0
  O  O38  1  0.054  0.376  0.913  1.0
  O  O39  1  0.066  0.511  0.623  1.0
  O  O40  1  0.934  0.489  0.377  1.0
  O  O41  1  0.946  0.624  0.087  1.0
  O  O42  1  0.446  0.376  0.413  1.0
  O  O43  1  0.434  0.511  0.123  1.0
  O  O44  1  0.832  0.121  0.608  1.0
  O  O45  1  0.335  0.994  0.601  1.0
  O  O46  1  0.668  0.121  0.108  1.0
  O  O47  1  0.165  0.994  0.101  1.0
[/CIF]
.