data_[Sr1Tb1Ag1Hg1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Tb  1.1000  1.7500  0.9815
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.7992]
_cell_length_b [3.7992]
_cell_length_c [7.7231]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [SrTbAgHg]
_chemical_formula_sum '[Sr1 Tb1 Ag1 Hg1]'
_cell_volume [111.4749]
_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
[
  Sr  Sr0  1  0.0000  0.0000  0.8544  1
  Tb  Tb1  1  0.0000  0.0000  0.3639  1
  Ag  Ag2  1  0.5000  0.5000  0.5724  1
  Hg  Hg3  1  0.5000  0.5000  0.1373  1
]