data_BC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.46
_cell_length_b   4.46
_cell_length_c   4.46
_cell_angle_alpha   125.67
_cell_angle_beta   106.32
_cell_angle_gamma   97.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BC2
_chemical_formula_sum   'B1 C2'
_cell_volume   63.94
_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
  C  C1  1  0.4  0.0  0.0  1.0
  C  C2  1  0.67  0.0  0.0  1.0

data_BC2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.07
_cell_length_b   4.46
_cell_length_c   4.46
_cell_angle_alpha   73.68
_cell_angle_beta   62.84
_cell_angle_gamma   62.84
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BC2
_chemical_formula_sum   'B1 C2'
_cell_volume   63.94
_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
  C  C1  1  0.33  0.67  0.0  1.0
  C  C2  1  0.6  0.4  -0.0  1.0

B C C