data_Nb2PtSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.42
_cell_length_b   3.42
_cell_length_c   6.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2PtSe
_chemical_formula_sum   'Nb2 Pt1 Se1'
_cell_volume   71.1
_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
  Nb  Nb0  1  0.71  0.71  0.92  1.0
  Nb  Nb1  1  0.0  0.0  0.64  1.0
  Pt  Pt2  1  0.71  0.71  0.82  1.0
  Se  Se3  1  0.0  0.0  0.8  1.0

data_Nb2PtSe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.84
_cell_length_b   4.84
_cell_length_c   6.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Nb2PtSe
_chemical_formula_sum   'Nb4 Pt2 Se2'
_cell_volume   142.2
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  0.0  0.0  0.64  1.0
  Nb  Nb1  2  0.21  0.5  0.92  1.0
  Pt  Pt2  2  0.21  0.5  0.82  1.0
  Se  Se3  2  0.0  0.0  0.8  1.0

Nb Nb Pt Se
Nb Nb Pt Se 0 2 o o o 1 3 o o o 