data_[Be2Nb2Ag2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Nb  1.6000  1.4500  0.8200
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [2.7931]
_cell_length_b [4.6519]
_cell_length_c [7.0700]
_cell_angle_alpha [83.4950]
_cell_angle_beta [79.0197]
_cell_angle_gamma [85.3731]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [BeNbAg]
_chemical_formula_sum '[Be2 Nb2 Ag2]'
_cell_volume [89.4347]
_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
[
  Be  Be0  2  0.4343  0.8302  0.6274  1
  Nb  Nb1  2  0.1353  0.6915  0.3397  1
  Ag  Ag2  2  0.2055  0.2371  0.0707  1
]