data_[K8Si4P8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Si  1.9000  1.1000  0.5400
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [6.8702]
_cell_length_b [12.9863]
_cell_length_c [6.0947]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [K2SiP2]
_chemical_formula_sum '[K8 Si4 P8]'
_cell_volume [543.7602]
_cell_formula_units_Z [4]
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  8  0.1615  0.1460  0.0000  1
  Si  Si1  4  0.0000  0.5000  0.2500  1
  P  P2  8  0.1640  0.5961  0.5000  1
]