data_[Sr2Ni1Sn6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ni  1.9100  1.3500  0.7400
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [6.8239]
_cell_length_b [6.8239]
_cell_length_c [5.9955]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [Sr2NiSn6]
_chemical_formula_sum '[Sr2 Ni1 Sn6]'
_cell_volume [241.7827]
_cell_formula_units_Z [1]
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
[
  Sr  Sr0  2  0.3333  0.6667  0.8180  1.0
  Ni  Ni1  1  0.0000  0.0000  0.0000  1.0
  Sn  Sn2  6  0.1657  0.3314  0.2972  1.0
]