data_U3N2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.76
_cell_length_b   6.76
_cell_length_c   6.76
_cell_angle_alpha   48.79
_cell_angle_beta   48.79
_cell_angle_gamma   48.79
_symmetry_Int_Tables_number   1
_chemical_formula_structural   U3N2
_chemical_formula_sum   'U6 N4'
_cell_volume   160.65
_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
  U  U4  1  0.15  0.98  0.4  1.0
  U  U5  1  0.94  0.4  0.4  1.0
  U  U6  1  0.91  0.61  0.4  1.0
  U  U7  1  0.09  0.39  0.43  1.0
  U  U8  1  0.06  0.6  0.43  1.0
  U  U9  1  0.85  0.02  0.43  1.0
  N  N0  1  0.0  0.0  0.99  1.0
  N  N1  1  0.0  0.0  0.93  1.0
  N  N2  1  0.0  0.0  0.91  1.0
  N  N3  1  0.0  0.0  0.84  1.0

data_U3N2
_symmetry_space_group_name_H-M   P-1
_cell_length_a   5.59
_cell_length_b   5.59
_cell_length_c   6.76
_cell_angle_alpha   65.61
_cell_angle_beta   65.61
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   U3N2
_chemical_formula_sum   'U6 N4'
_cell_volume   160.65
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  U  U0  2  0.02  0.51  0.12  1.0
  U  U1  2  0.39  0.51  0.51  1.0
  U  U2  2  0.4  0.49  0.67  1.0
  N  N3  2  0.0  0.01  0.49  1.0
  N  N4  2  0.0  0.07  0.43  1.0

U U U U U U N N N N