data_[Ni6As6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ni  1.9100  1.3500  0.7400
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.7227]
_cell_length_b [10.6241]
_cell_length_c [4.5873]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [NiAs]
_chemical_formula_sum '[Ni6 As6]'
_cell_volume [181.4284]
_cell_formula_units_Z [6]
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
[
  Ni  Ni0  4  0.0000  0.3670  0.7220  1
  Ni  Ni1  2  0.0000  0.5000  0.2014  1
  As  As2  4  0.0000  0.2802  0.2401  1
  As  As3  2  0.0000  0.0000  0.3724  1
]