data_La2N
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.28
_cell_length_b   6.28
_cell_length_c   3.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2N
_chemical_formula_sum   'La4 N2'
_cell_volume   143.19
_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
  La  La0  1  0.85  0.85  0.0  1.0
  La  La1  1  0.42  0.42  0.0  1.0
  La  La2  1  0.99  0.29  0.82  1.0
  La  La3  1  0.29  0.99  0.82  1.0
  N  N4  1  0.0  0.0  0.0  1.0
  N  N5  1  0.14  0.14  0.82  1.0

data_La2N
_symmetry_space_group_name_H-M   Cm
_cell_length_a   8.88
_cell_length_b   8.88
_cell_length_c   3.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   La2N
_chemical_formula_sum   'La8 N4'
_cell_volume   286.38
_cell_formula_units_Z   4
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
  La  La0  4  0.14  0.15  0.82  1.0
  La  La1  2  0.35  0.5  0.0  1.0
  La  La2  2  0.42  0.0  0.0  1.0
  N  N3  2  0.0  0.0  0.0  1.0
  N  N4  2  0.14  0.0  0.82  1.0

La La La La N N