data_[K2Mg2P2H4O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Mg  1.3100  1.5000  0.8600
  P  2.1900  1.0000  0.5500
  H  2.2000  0.2500  0.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [5.5407]
_cell_length_b [8.0974]
_cell_length_c [4.7279]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [KMgPH2O5]
_chemical_formula_sum '[K2 Mg2 P2 H4 O10]'
_cell_volume [212.1190]
_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
[
  K  K0  2  0.0000  0.0420  0.2797  1
  Mg  Mg1  2  0.0000  0.4821  0.4083  1
  P  P2  2  0.0000  0.7152  0.8367  1
  H  H3  4  0.1421  0.2972  0.8353  1
  O  O4  4  0.2229  0.6271  0.6938  1
  O  O5  2  0.0000  0.2863  0.7104  1
  O  O6  2  0.0000  0.6834  0.1574  1
  O  O7  2  0.0000  0.9000  0.7758  1
]