The compound described by Ta3C is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ta(1) is bonded in a distorted see-saw-like geometry to four equivalent C(1) atoms. C(1) is bonded to twelve equivalent Ta(1) atoms to form a mixture of corner and face-sharing CTa12 cuboctahedra. is represented by the CIF file [CIF]
data_Ta3C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.448
_cell_length_b   5.448
_cell_length_c   4.703
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   120.899
_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
  Ta  Ta0  1  0.167  0.335  0.250  1.0
  Ta  Ta1  1  0.665  0.833  0.250  1.0
  Ta  Ta2  1  0.167  0.833  0.250  1.0
  Ta  Ta3  1  0.833  0.665  0.750  1.0
  Ta  Ta4  1  0.335  0.167  0.750  1.0
  Ta  Ta5  1  0.833  0.167  0.750  1.0
  C  C6  1  0.333  0.667  0.750  1.0
  C  C7  1  0.667  0.333  0.250  1.0
[/CIF]
.
The compound described by Ta3C is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ta(1) is bonded in a distorted see-saw-like geometry to four equivalent C(1) atoms. C(1) is bonded to twelve equivalent Ta(1) atoms to form a mixture of corner and face-sharing CTa12 cuboctahedra. is represented by the CIF file [CIF]
data_Ta3C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.448
_cell_length_b   5.448
_cell_length_c   4.703
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   120.899
_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
  Ta  Ta0  1  0.167  0.335  0.250  1.0
  Ta  Ta1  1  0.665  0.833  0.250  1.0
  Ta  Ta2  1  0.167  0.833  0.250  1.0
  Ta  Ta3  1  0.833  0.665  0.750  1.0
  Ta  Ta4  1  0.335  0.167  0.750  1.0
  Ta  Ta5  1  0.833  0.167  0.750  1.0
  C  C6  1  0.333  0.667  0.750  1.0
  C  C7  1  0.667  0.333  0.250  1.0
[/CIF]
.