data_[Nb2Al2P2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  Al  1.6100  1.2500  0.6750
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.6086]
_cell_length_b [6.8932]
_cell_length_c [5.0200]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [NbAlPO]
_chemical_formula_sum '[Nb2 Al2 P2 O2]'
_cell_volume [124.8723]
_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
[
  Nb  Nb0  2  0.5000  0.3643  0.9086  1
  Al  Al1  2  0.0000  0.1058  0.5450  1
  P  P2  2  0.5000  0.2810  0.3987  1
  O  O3  2  0.0000  0.1351  0.9017  1
]