data_[Nb4Ni4As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  Ni  1.9100  1.3500  0.7400
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.7511]
_cell_length_b [6.7488]
_cell_length_c [6.8856]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [NbNiAs]
_chemical_formula_sum '[Nb4 Ni4 As4]'
_cell_volume [174.3129]
_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
[
  Nb  Nb0  2  0.0000  0.0000  0.5842  1.0
  Nb  Nb1  2  0.0000  0.5000  0.6963  1.0
  Ni  Ni2  4  0.0000  0.3115  0.3106  1.0
  As  As3  4  0.0000  0.2265  0.9889  1.0
]