data_[Na4Mg2Mn4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Mn  1.5500  1.4000  0.6483
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [6.4540]
_cell_length_b [6.1426]
_cell_length_c [9.3245]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Na2MgMn2O8]
_chemical_formula_sum '[Na4 Mg2 Mn4 O16]'
_cell_volume [369.6622]
_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
[
  Na  Na0  4  0.2452  0.0000  0.0019  1
  Mg  Mg1  2  0.5000  0.0000  0.3508  1
  Mn  Mn2  2  0.0000  0.0000  0.3609  1
  Mn  Mn3  2  0.5000  0.0000  0.6432  1
  O  O4  4  0.0000  0.2197  0.4583  1
  O  O5  4  0.2195  0.0000  0.2583  1
  O  O6  4  0.2907  0.0000  0.7378  1
  O  O7  4  0.5000  0.2105  0.5196  1
]