data_[Ce2Tm2Se2O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Tm  1.2500  1.7500  1.0950
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.5532]
_cell_length_b [4.0132]
_cell_length_c [7.7126]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.4504]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CeTmSeO2]
_chemical_formula_sum '[Ce2 Tm2 Se2 O4]'
_cell_volume [192.4115]
_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
[
  Ce  Ce0  2  0.2997  0.2500  0.0675  1
  Tm  Tm1  2  0.3300  0.2500  0.5815  1
  Se  Se2  2  0.0486  0.7500  0.7438  1
  O  O3  2  0.4822  0.7500  0.1259  1
  O  O4  2  0.4895  0.7500  0.6152  1
]