data_[Er4Ge8W8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ge  2.0100  1.2500  0.7700
  W  2.3600  1.3500  0.7667
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [21.5408]
_cell_length_b [4.3116]
_cell_length_c [4.3842]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.5398]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er(GeW)2]
_chemical_formula_sum '[Er4 Ge8 W8]'
_cell_volume [398.9521]
_cell_formula_units_Z [4]
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
[
  Er  Er0  4  0.1497  0.0000  0.9123  1
  Ge  Ge1  4  0.1110  0.5000  0.3737  1
  Ge  Ge2  4  0.2305  0.5000  0.6125  1
  W  W3  4  0.0356  0.0000  0.3047  1
  W  W4  4  0.0369  0.5000  0.8014  1
]