data_B3C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.83
_cell_length_b   3.83
_cell_length_c   3.83
_cell_angle_alpha   143.49
_cell_angle_beta   98.35
_cell_angle_gamma   92.93
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B3C
_chemical_formula_sum   'B3 C1'
_cell_volume   31.72
_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
  B  B0  1  0.2  0.0  0.65  1.0
  B  B1  1  0.0  0.5  0.99  1.0
  B  B2  1  0.0  0.0  0.0  1.0
  C  C3  1  0.0  0.0  0.64  1.0

data_B3C
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.4
_cell_length_b   3.83
_cell_length_c   3.83
_cell_angle_alpha   81.65
_cell_angle_beta   71.74
_cell_angle_gamma   71.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B3C
_chemical_formula_sum   'B3 C1'
_cell_volume   31.72
_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
  B  B0  1  0.0  0.0  0.0  1.0
  B  B1  1  0.0  0.8  0.65  1.0
  B  B2  1  0.5  0.0  0.49  1.0
  C  C3  1  0.0  0.0  0.64  1.0

B B B C