data_[Er4Co2Cu2Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Co  1.8800  1.3500  0.7683
  Cu  1.9000  1.3500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.9580]
_cell_length_b [3.9701]
_cell_length_c [16.5264]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Er2CoCuSi4]
_chemical_formula_sum '[Er4 Co2 Cu2 Si8]'
_cell_volume [259.6916]
_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
[
  Er  Er0  2  0.0000  0.0000  0.1091  1
  Er  Er1  2  0.5000  0.0000  0.8979  1
  Co  Co2  2  0.0000  0.0000  0.3209  1
  Si  Si3  2  0.0000  0.0000  0.4557  1
  Si  Si4  2  0.0000  0.0000  0.7550  1
  Si  Si5  2  0.5000  0.0000  0.2551  1
  Si  Si6  2  0.5000  0.0000  0.5346  1
  Cu  Cu7  2  0.5000  0.0000  0.6716  1
]