data_[Ga2Hg4H4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ga  1.8100  1.3000  0.7600
  Hg  2.0000  1.5000  1.2450
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [7.9700]
_cell_length_b [7.9700]
_cell_length_c [3.1256]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Ga(HgH)2]
_chemical_formula_sum '[Ga2 Hg4 H4]'
_cell_volume [198.5448]
_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
[
  Ga  Ga0  2  0.0000  0.0000  0.0000  1.0
  Hg  Hg1  4  0.2490  0.7490  0.0000  1.0
  H  H2  4  0.0337  0.5337  0.5000  1.0
]