data_[Cu2Hg2H2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Hg  2.0000  1.5000  1.2450
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [2.8481]
_cell_length_b [7.3431]
_cell_length_c [4.4422]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [CuHgH]
_chemical_formula_sum '[Cu2 Hg2 H2]'
_cell_volume [92.9029]
_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
[
  Cu  Cu0  2  0.0000  1.0000  0.9755  1.0
  Hg  Hg1  2  0.0000  0.3569  0.6288  1.0
  H  H2  2  0.0000  0.9042  0.6326  1.0
]