data_Li2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.93
_cell_length_b   7.93
_cell_length_c   3.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   160.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2C
_chemical_formula_sum   'Li4 C2'
_cell_volume   77.44
_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
  Li  Li2  1  0.33  0.0  0.87  1.0
  Li  Li3  1  0.0  0.0  0.0  1.0
  Li  Li4  1  0.33  0.59  0.0  1.0
  Li  Li5  1  0.33  0.41  0.0  1.0
  C  C0  1  0.33  0.13  0.87  1.0
  C  C1  1  0.33  0.87  0.87  1.0

data_Li2C
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.65
_cell_length_b   3.74
_cell_length_c   7.93
_cell_angle_alpha   90.0
_cell_angle_beta   99.62
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2C
_chemical_formula_sum   'Li4 C2'
_cell_volume   77.44
_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
  Li  Li0  1  0.0  0.0  0.0  1.0
  Li  Li1  1  0.0  0.13  0.67  1.0
  Li  Li2  1  0.41  0.0  0.08  1.0
  Li  Li3  1  0.59  0.0  0.27  1.0
  C  C4  1  0.13  0.13  0.8  1.0
  C  C5  1  0.87  0.13  0.55  1.0

Li Li Li Li C C