data_[Rb4Sm2As4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sm  1.1700  1.8500  1.2290
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.3397]
_cell_length_b [6.1085]
_cell_length_c [7.4881]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.2352]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Sm(AsO3)2]
_chemical_formula_sum '[Rb4 Sm2 As4 O12]'
_cell_volume [424.2314]
_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
[
  Rb  Rb0  4  0.2157  0.5000  0.1894  1.0
  Sm  Sm1  2  0.0000  0.5000  0.5000  1.0
  As  As2  4  0.0673  0.0000  0.2185  1.0
  O  O3  8  0.0154  0.2311  0.7336  1.0
  O  O4  4  0.2487  0.5000  0.6085  1.0
]