data_[Rb4Co1Si2O7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Co  1.8800  1.3500  0.7683
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.2671]
_cell_length_b [7.0654]
_cell_length_c [7.1234]
_cell_angle_alpha [114.0735]
_cell_angle_beta [100.3869]
_cell_angle_gamma [107.4536]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Rb4CoSi2O7]
_chemical_formula_sum '[Rb4 Co1 Si2 O7]'
_cell_volume [257.6102]
_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
[
  Rb  Rb0  2  0.0685  0.5453  0.7789  1
  Rb  Rb1  2  0.3207  0.0815  0.7229  1
  Co  Co2  1  0.5000  0.5000  0.5000  1
  Si  Si3  2  0.2171  0.0763  0.2248  1
  O  O4  2  0.1814  0.2664  0.4362  1
  O  O5  2  0.2046  0.8508  0.2364  1
  O  O6  2  0.4754  0.2365  0.2290  1
  O  O7  1  0.0000  0.0000  0.0000  1
]