data_KC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.3
_cell_length_b   4.3
_cell_length_c   4.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   143.94
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KC2
_chemical_formula_sum   'K1 C2'
_cell_volume   43.65
_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
  K  K2  1  0.0  0.0  0.0  1.0
  C  C0  1  0.33  0.91  0.0  1.0
  C  C1  1  0.33  0.09  0.0  1.0

data_KC2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.66
_cell_length_b   4.01
_cell_length_c   4.3
_cell_angle_alpha   90.0
_cell_angle_beta   108.03
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   KC2
_chemical_formula_sum   'K1 C2'
_cell_volume   43.65
_cell_formula_units_Z   1
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
  K  K0  1  0.0  0.0  0.0  1.0
  C  C1  1  0.09  0.0  0.42  1.0
  C  C2  1  0.91  0.0  0.25  1.0

K C C