data_B2N
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.46
_cell_length_b   4.46
_cell_length_c   2.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B2N
_chemical_formula_sum   'B4 N2'
_cell_volume   47.61
_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
  B  B0  1  0.52  0.52  0.0  1.0
  B  B1  1  0.94  0.94  0.0  1.0
  B  B2  1  0.74  0.71  0.2  1.0
  B  B3  1  0.71  0.74  0.2  1.0
  N  N4  1  0.0  0.0  0.0  1.0
  N  N5  1  0.23  0.23  0.2  1.0

data_B2N
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.3
_cell_length_b   6.3
_cell_length_c   2.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   B2N
_chemical_formula_sum   'B8 N4'
_cell_volume   95.21
_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
  B  B0  4  0.23  0.48  0.2  1.0
  B  B1  2  0.02  0.5  0.0  1.0
  B  B2  2  0.44  0.5  0.0  1.0
  N  N3  2  0.0  0.0  0.0  1.0
  N  N4  2  0.23  0.0  0.2  1.0

B B B B N N