data_[K4Co1Si2O7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  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 [6.0677]
_cell_length_b [6.7556]
_cell_length_c [6.8499]
_cell_angle_alpha [113.3165]
_cell_angle_beta [99.9770]
_cell_angle_gamma [106.2997]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [K4CoSi2O7]
_chemical_formula_sum '[K4 Co1 Si2 O7]'
_cell_volume [234.2593]
_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
[
  K  K0  2  0.0749  0.5474  0.7829  1
  K  K1  2  0.3132  0.0693  0.7169  1
  Co  Co2  1  0.5000  0.5000  0.5000  1
  Si  Si3  2  0.2209  0.0694  0.2255  1
  O  O4  2  0.1783  0.2622  0.4432  1
  O  O5  2  0.2152  0.8354  0.2374  1
  O  O6  2  0.4812  0.2320  0.2230  1
  O  O7  1  0.0000  0.0000  0.0000  1
]