data_[Na2Mn2As2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mn  1.5500  1.4000  0.6483
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.5627]
_cell_length_b [5.8010]
_cell_length_c [6.4908]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.7634]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaMnAsO4]
_chemical_formula_sum '[Na2 Mn2 As2 O8]'
_cell_volume [201.5770]
_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  2  0.2929  0.2500  0.0668  1
  Mn  Mn1  2  0.1879  0.2500  0.5353  1
  As  As2  2  0.2746  0.7500  0.3318  1
  O  O3  4  0.0615  0.5225  0.2938  1
  O  O4  2  0.4691  0.7500  0.5858  1
  O  O5  2  0.4742  0.7500  0.1724  1
]