data_NaC3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.8
_cell_length_b   3.8
_cell_length_c   4.25
_cell_angle_alpha   91.76
_cell_angle_beta   91.76
_cell_angle_gamma   39.57
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaC3
_chemical_formula_sum   'Na1 C3'
_cell_volume   39.13
_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
  Na  Na3  1  0.51  0.0  0.12  1.0
  C  C0  1  0.0  0.0  0.0  1.0
  C  C1  1  0.39  0.0  0.0  1.0
  C  C2  1  0.63  0.0  0.24  1.0

data_NaC3
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.58
_cell_length_b   3.8
_cell_length_c   4.25
_cell_angle_alpha   91.76
_cell_angle_beta   90.0
_cell_angle_gamma   109.78
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaC3
_chemical_formula_sum   'Na1 C3'
_cell_volume   39.13
_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
  Na  Na0  1  0.0  0.49  0.88  1.0
  C  C1  1  0.0  0.0  0.0  1.0
  C  C2  1  0.0  0.37  0.76  1.0
  C  C3  1  0.0  0.61  1.0  1.0

Na C C C