data_[Li4Mn2Si2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Mn  1.5500  1.4000  0.6483
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [6.3794]
_cell_length_b [5.4437]
_cell_length_c [5.0472]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Li2MnSiO4]
_chemical_formula_sum '[Li4 Mn2 Si2 O8]'
_cell_volume [175.2744]
_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
[
  Li  Li0  4  0.2489  0.3311  0.4433  1
  Mn  Mn1  2  0.0000  0.1656  0.9405  1
  Si  Si2  2  0.0000  0.8208  0.4501  1
  O  O3  4  0.2119  0.6796  0.3374  1
  O  O4  2  0.0000  0.1136  0.3555  1
  O  O5  2  0.0000  0.8123  0.7776  1
]