data_[Er4Ni8As4H4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ni  1.9100  1.3500  0.7400
  As  2.1800  1.1500  0.6600
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.8141]
_cell_length_b [10.1015]
_cell_length_c [6.7163]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [ErNi2AsH]
_chemical_formula_sum '[Er4 Ni8 As4 H4]'
_cell_volume [258.7689]
_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  0.0000  0.4379  0.7500  1.0
  Ni  Ni1  8  0.0000  0.1569  0.5573  1.0
  As  As2  4  0.0000  0.2784  0.2500  1.0
  H  H3  4  0.0000  0.0000  0.0000  1.0
]