data_[Er1Zr1Co1Ru1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Zr  1.3300  1.5500  0.8600
  Co  1.8800  1.3500  0.7683
  Ru  2.2000  1.3000  0.6610
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.2999]
_cell_length_b [3.2999]
_cell_length_c [6.5597]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [ErZrCoRu]
_chemical_formula_sum '[Er1 Zr1 Co1 Ru1]'
_cell_volume [71.4288]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.8546  1.0
  Zr  Zr1  1  0.0000  0.0000  0.3612  1.0
  Co  Co2  1  0.5000  0.5000  0.5875  1.0
  Ru  Ru3  1  0.5000  0.5000  0.1247  1.0
]