The material structure described by Na3MnO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form NaO4 tetrahedra that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids, and  an edgeedge with one Na(2)O4 trigonal pyramid. In the second Na site, Na(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form NaO4 trigonal pyramids that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, and edges with two equivalent Na(1)O4 tetrahedra. Mn(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form MnO4 tetrahedra that share corners with eight equivalent Na(1)O4 tetrahedra and corners with four equivalent Na(2)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Na(2), two equivalent Na(1), and one Mn(1) atom to form corner-sharing ONa3Mn tetrahedra. In the second O site, O(2) is bonded to one Na(2), two equivalent Na(1), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing ONa3Mn trigonal pyramids. In the third O site, O(3) is bonded to one Na(2), two equivalent Na(1), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing ONa3Mn trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3MnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.461
_cell_length_b   7.026
_cell_length_c   12.178
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   467.285
_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  0.716  0.505  0.663  1.0
  Na  Na1  1  0.284  0.495  0.337  1.0
  Na  Na2  1  0.216  0.495  0.837  1.0
  Na  Na3  1  0.284  0.005  0.337  1.0
  Na  Na4  1  0.784  0.505  0.163  1.0
  Na  Na5  1  0.716  0.995  0.663  1.0
  Na  Na6  1  0.784  0.995  0.163  1.0
  Na  Na7  1  0.216  0.005  0.837  1.0
  Na  Na8  1  0.275  0.750  0.574  1.0
  Na  Na9  1  0.725  0.250  0.426  1.0
  Na  Na10  1  0.775  0.250  0.926  1.0
  Na  Na11  1  0.225  0.750  0.074  1.0
  Mn  Mn12  1  0.703  0.750  0.910  1.0
  Mn  Mn13  1  0.297  0.250  0.090  1.0
  Mn  Mn14  1  0.203  0.250  0.590  1.0
  Mn  Mn15  1  0.797  0.750  0.410  1.0
  O  O16  1  0.393  0.750  0.907  1.0
  O  O17  1  0.607  0.250  0.093  1.0
  O  O18  1  0.893  0.250  0.593  1.0
  O  O19  1  0.107  0.750  0.407  1.0
  O  O20  1  0.800  0.950  0.844  1.0
  O  O21  1  0.200  0.050  0.156  1.0
  O  O22  1  0.300  0.050  0.656  1.0
  O  O23  1  0.200  0.450  0.156  1.0
  O  O24  1  0.700  0.950  0.344  1.0
  O  O25  1  0.800  0.550  0.844  1.0
  O  O26  1  0.700  0.550  0.344  1.0
  O  O27  1  0.300  0.450  0.656  1.0
  O  O28  1  0.703  0.750  0.543  1.0
  O  O29  1  0.297  0.250  0.457  1.0
  O  O30  1  0.203  0.250  0.957  1.0
  O  O31  1  0.797  0.750  0.043  1.0
[/CIF]
.
The material structure described by Na3MnO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form NaO4 tetrahedra that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids, and  an edgeedge with one Na(2)O4 trigonal pyramid. In the second Na site, Na(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form NaO4 trigonal pyramids that share corners with four equivalent Na(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, and edges with two equivalent Na(1)O4 tetrahedra. Mn(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form MnO4 tetrahedra that share corners with eight equivalent Na(1)O4 tetrahedra and corners with four equivalent Na(2)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Na(2), two equivalent Na(1), and one Mn(1) atom to form corner-sharing ONa3Mn tetrahedra. In the second O site, O(2) is bonded to one Na(2), two equivalent Na(1), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing ONa3Mn trigonal pyramids. In the third O site, O(3) is bonded to one Na(2), two equivalent Na(1), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing ONa3Mn trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3MnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.461
_cell_length_b   7.026
_cell_length_c   12.178
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   467.285
_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  0.716  0.505  0.663  1.0
  Na  Na1  1  0.284  0.495  0.337  1.0
  Na  Na2  1  0.216  0.495  0.837  1.0
  Na  Na3  1  0.284  0.005  0.337  1.0
  Na  Na4  1  0.784  0.505  0.163  1.0
  Na  Na5  1  0.716  0.995  0.663  1.0
  Na  Na6  1  0.784  0.995  0.163  1.0
  Na  Na7  1  0.216  0.005  0.837  1.0
  Na  Na8  1  0.275  0.750  0.574  1.0
  Na  Na9  1  0.725  0.250  0.426  1.0
  Na  Na10  1  0.775  0.250  0.926  1.0
  Na  Na11  1  0.225  0.750  0.074  1.0
  Mn  Mn12  1  0.703  0.750  0.910  1.0
  Mn  Mn13  1  0.297  0.250  0.090  1.0
  Mn  Mn14  1  0.203  0.250  0.590  1.0
  Mn  Mn15  1  0.797  0.750  0.410  1.0
  O  O16  1  0.393  0.750  0.907  1.0
  O  O17  1  0.607  0.250  0.093  1.0
  O  O18  1  0.893  0.250  0.593  1.0
  O  O19  1  0.107  0.750  0.407  1.0
  O  O20  1  0.800  0.950  0.844  1.0
  O  O21  1  0.200  0.050  0.156  1.0
  O  O22  1  0.300  0.050  0.656  1.0
  O  O23  1  0.200  0.450  0.156  1.0
  O  O24  1  0.700  0.950  0.344  1.0
  O  O25  1  0.800  0.550  0.844  1.0
  O  O26  1  0.700  0.550  0.344  1.0
  O  O27  1  0.300  0.450  0.656  1.0
  O  O28  1  0.703  0.750  0.543  1.0
  O  O29  1  0.297  0.250  0.457  1.0
  O  O30  1  0.203  0.250  0.957  1.0
  O  O31  1  0.797  0.750  0.043  1.0
[/CIF]
.