data_[Gd1Tm1Nb2Si2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Gd  1.2000  1.8000  1.0750
  Tm  1.2500  1.7500  1.0950
  Nb  1.6000  1.4500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [4.0019]
_cell_length_b [4.0019]
_cell_length_c [7.7622]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [GdTm(NbSi)2]
_chemical_formula_sum '[Gd1 Tm1 Nb2 Si2]'
_cell_volume [124.3100]
_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
[
  Gd  Gd0  1  0.0000  0.0000  0.3564  1
  Tm  Tm1  1  0.5000  0.5000  0.6494  1
  Nb  Nb2  2  0.0000  0.5000  0.9985  1
  Si  Si3  1  0.0000  0.0000  0.7582  1
  Si  Si4  1  0.5000  0.5000  0.2390  1
]