data_[Mg2Np2Mn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Np  1.3600  1.7500  1.0000
  Mn  1.5500  1.4000  0.6483
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [7.7320]
_cell_length_b [5.2930]
_cell_length_c [5.3079]
_cell_angle_alpha [90.0000]
_cell_angle_beta [129.1846]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [MgNpMn4]
_chemical_formula_sum '[Mg2 Np2 Mn8]'
_cell_volume [168.3790]
_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
[
  Mg  Mg0  2  0.2492  0.0000  0.7514  1
  Np  Np1  2  0.4979  0.5000  0.0177  1
  Mn  Mn2  4  0.3490  0.7700  0.3530  1
  Mn  Mn3  2  0.1466  0.5000  0.3963  1
  Mn  Mn4  2  0.1589  0.5000  0.8785  1
]