data_Ta2NbC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.99
_cell_length_b   4.96
_cell_length_c   4.96
_cell_angle_alpha   56.49
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2NbC
_chemical_formula_sum   'Ta2 Nb1 C1'
_cell_volume   61.42
_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  Ta2  1  0.0  0.0  0.01  1.0
  Ta  Ta3  1  0.5  0.0  0.86  1.0
  Nb  Nb1  1  0.5  0.0  0.88  1.0
  C  C0  1  0.0  0.0  0.36  1.0

data_Ta2NbC
_symmetry_space_group_name_H-M   Pm
_cell_length_a   4.69
_cell_length_b   2.99
_cell_length_c   4.96
_cell_angle_alpha   90.0
_cell_angle_beta   118.24
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Ta2NbC
_chemical_formula_sum   'Ta2 Nb1 C1'
_cell_volume   61.42
_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
  Ta  Ta0  1  0.01  0.5  0.01  1.0
  Ta  Ta1  1  0.86  0.0  0.86  1.0
  Nb  Nb2  1  0.88  0.0  0.88  1.0
  C  C3  1  0.36  0.5  0.36  1.0

Ta Ta Nb C