data_Ta4C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.83
_cell_length_b   7.83
_cell_length_c   7.83
_cell_angle_alpha   154.51
_cell_angle_beta   154.51
_cell_angle_gamma   36.36
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta4C
_chemical_formula_sum   'Ta4 C1'
_cell_volume   88.84
_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
  Ta  Ta1  1  0.73  0.0  0.72  1.0
  Ta  Ta2  1  0.0  0.73  0.72  1.0
  Ta  Ta3  1  0.0  0.0  0.71  1.0
  Ta  Ta4  1  0.0  0.0  0.17  1.0
  C  C0  1  0.0  0.0  0.0  1.0

data_Ta4C
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.89
_cell_length_b   4.89
_cell_length_c   7.83
_cell_angle_alpha   90.0
_cell_angle_beta   108.18
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ta4C
_chemical_formula_sum   'Ta8 C2'
_cell_volume   177.67
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Ta  Ta0  4  0.36  0.36  0.99  1.0
  Ta  Ta1  2  0.17  0.0  0.17  1.0
  Ta  Ta2  2  0.21  0.5  0.71  1.0
  C  C3  2  0.0  0.0  0.0  1.0

Ta Ta Ta Ta C