data_[Rb4Mg4P4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Mg  1.3100  1.5000  0.8600
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [8.9202]
_cell_length_b [5.5167]
_cell_length_c [9.9271]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [RbMgPO4]
_chemical_formula_sum '[Rb4 Mg4 P4 O16]'
_cell_volume [488.5176]
_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
[
  Rb  Rb0  4  0.0011  0.2500  0.6811  1
  Mg  Mg1  4  0.1747  0.7500  0.9185  1
  P  P2  4  0.2126  0.2500  0.0851  1
  O  O3  8  0.2286  0.5216  0.5097  1
  O  O4  4  0.0401  0.2500  0.0885  1
  O  O5  4  0.2235  0.7500  0.7296  1
]