data_[Nd12As4C2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  As  2.1800  1.1500  0.6600
  C  2.5500  0.7000  0.3000
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.3145]
_cell_length_b [4.1419]
_cell_length_c [8.4851]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.0430]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Nd6As2CSe3]
_chemical_formula_sum '[Nd12 As4 C2 Se6]'
_cell_volume [624.4153]
_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
[
  Nd  Nd0  4  0.0002  0.0000  0.2143  1.0
  Nd  Nd1  4  0.1483  0.5000  0.0782  1.0
  Nd  Nd2  4  0.1667  0.5000  0.5789  1.0
  As  As3  4  0.1658  0.0000  0.3324  1.0
  Se  Se4  4  0.1699  0.0000  0.8363  1.0
  C  C5  2  0.0000  0.5000  0.0000  1.0
  Se  Se6  2  0.0000  0.5000  0.5000  1.0
]