data_[Tm2Ni2As2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Ni  1.9100  1.3500  0.7400
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.3695]
_cell_length_b [5.8167]
_cell_length_c [5.7221]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [TmNiAsO]
_chemical_formula_sum '[Tm2 Ni2 As2 O2]'
_cell_volume [145.4316]
_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
[
  Tm  Tm0  2  0.0000  0.2434  0.9151  1
  Ni  Ni1  2  0.5000  0.1348  0.5368  1
  As  As2  2  0.0000  0.2665  0.4160  1
  O  O3  2  0.5000  0.1749  0.8861  1
]