data_[Ac6Tm3Cu6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Tm  1.2500  1.7500  1.0950
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.9929]
_cell_length_b [5.9929]
_cell_length_c [16.5898]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ac2Tm(CuO3)2]
_chemical_formula_sum '[Ac6 Tm3 Cu6 O18]'
_cell_volume [515.9912]
_cell_formula_units_Z [3]
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
[
  Ac  Ac0  6  0.0000  0.0000  0.2101  1
  Tm  Tm1  3  0.0000  0.0000  0.0000  1
  Cu  Cu2  6  0.0000  0.0000  0.4207  1
  O  O3  18  0.0304  0.5152  0.7603  1
]