data_[Er1Tm1Zr2As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Zr  1.3300  1.5500  0.8600
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.8285]
_cell_length_b [3.9464]
_cell_length_c [6.9241]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.2283]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [ErTm(ZrAs2)2]
_chemical_formula_sum '[Er1 Tm1 Zr2 As4]'
_cell_volume [176.1796]
_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  0.5000  0.5000  0.0000  1.0
  Tm  Tm1  1  0.0000  0.0000  0.0000  1.0
  Zr  Zr2  1  0.0000  0.5000  0.5000  1.0
  Zr  Zr3  1  0.5000  0.0000  0.5000  1.0
  As  As4  2  0.2461  0.0000  0.7400  1.0
  As  As5  2  0.2526  0.5000  0.2595  1.0
]