The structure described by Ta3Al2CoC crystallizes in the cubic Fd-3m space group. Ta(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Co(1), four equivalent Al(1), and two equivalent C(1) atoms. Co(1) is bonded to six equivalent Ta(1) and six equivalent Al(1) atoms to form CoTa6Al6 cuboctahedra that share edges with six equivalent C(1)Ta6 octahedra and faces with six equivalent Co(1)Ta6Al6 cuboctahedra. Al(1) is bonded in a 12-coordinate geometry to six equivalent Ta(1), three equivalent Co(1), and three equivalent Al(1) atoms. C(1) is bonded to six equivalent Ta(1) atoms to form CTa6 octahedra that share corners with six equivalent C(1)Ta6 octahedra and edges with six equivalent Co(1)Ta6Al6 cuboctahedra. The corner-sharing octahedral tilt angles are 40°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta3Al2CoC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.208
_cell_length_b   8.208
_cell_length_c   8.208
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   391.037
_cell_formula_units_Z   4
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  0.561  0.939  0.561  1.0
  Ta  Ta1  1  0.311  0.689  0.689  1.0
  Ta  Ta2  1  0.689  0.311  0.311  1.0
  Ta  Ta3  1  0.311  0.689  0.311  1.0
  Ta  Ta4  1  0.689  0.689  0.311  1.0
  Ta  Ta5  1  0.311  0.311  0.689  1.0
  Ta  Ta6  1  0.561  0.561  0.939  1.0
  Ta  Ta7  1  0.939  0.561  0.561  1.0
  Ta  Ta8  1  0.561  0.939  0.939  1.0
  Ta  Ta9  1  0.939  0.939  0.561  1.0
  Ta  Ta10  1  0.689  0.311  0.689  1.0
  Ta  Ta11  1  0.939  0.561  0.939  1.0
  Al  Al12  1  0.918  0.918  0.918  1.0
  Al  Al13  1  0.005  0.332  0.332  1.0
  Al  Al14  1  0.332  0.005  0.332  1.0
  Al  Al15  1  0.332  0.332  0.005  1.0
  Al  Al16  1  0.918  0.245  0.918  1.0
  Al  Al17  1  0.918  0.918  0.245  1.0
  Al  Al18  1  0.245  0.918  0.918  1.0
  Al  Al19  1  0.332  0.332  0.332  1.0
  Co  Co20  1  0.125  0.125  0.125  1.0
  Co  Co21  1  0.625  0.125  0.125  1.0
  Co  Co22  1  0.125  0.625  0.125  1.0
  Co  Co23  1  0.125  0.125  0.625  1.0
  C  C24  1  0.625  0.625  0.625  1.0
  C  C25  1  0.125  0.625  0.625  1.0
  C  C26  1  0.625  0.125  0.625  1.0
  C  C27  1  0.625  0.625  0.125  1.0
[/CIF]
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The structure described by Ta3Al2CoC crystallizes in the cubic Fd-3m space group. Ta(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Co(1), four equivalent Al(1), and two equivalent C(1) atoms. Co(1) is bonded to six equivalent Ta(1) and six equivalent Al(1) atoms to form CoTa6Al6 cuboctahedra that share edges with six equivalent C(1)Ta6 octahedra and faces with six equivalent Co(1)Ta6Al6 cuboctahedra. Al(1) is bonded in a 12-coordinate geometry to six equivalent Ta(1), three equivalent Co(1), and three equivalent Al(1) atoms. C(1) is bonded to six equivalent Ta(1) atoms to form CTa6 octahedra that share corners with six equivalent C(1)Ta6 octahedra and edges with six equivalent Co(1)Ta6Al6 cuboctahedra. The corner-sharing octahedral tilt angles are 40°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta3Al2CoC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.208
_cell_length_b   8.208
_cell_length_c   8.208
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   391.037
_cell_formula_units_Z   4
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  0.561  0.939  0.561  1.0
  Ta  Ta1  1  0.311  0.689  0.689  1.0
  Ta  Ta2  1  0.689  0.311  0.311  1.0
  Ta  Ta3  1  0.311  0.689  0.311  1.0
  Ta  Ta4  1  0.689  0.689  0.311  1.0
  Ta  Ta5  1  0.311  0.311  0.689  1.0
  Ta  Ta6  1  0.561  0.561  0.939  1.0
  Ta  Ta7  1  0.939  0.561  0.561  1.0
  Ta  Ta8  1  0.561  0.939  0.939  1.0
  Ta  Ta9  1  0.939  0.939  0.561  1.0
  Ta  Ta10  1  0.689  0.311  0.689  1.0
  Ta  Ta11  1  0.939  0.561  0.939  1.0
  Al  Al12  1  0.918  0.918  0.918  1.0
  Al  Al13  1  0.005  0.332  0.332  1.0
  Al  Al14  1  0.332  0.005  0.332  1.0
  Al  Al15  1  0.332  0.332  0.005  1.0
  Al  Al16  1  0.918  0.245  0.918  1.0
  Al  Al17  1  0.918  0.918  0.245  1.0
  Al  Al18  1  0.245  0.918  0.918  1.0
  Al  Al19  1  0.332  0.332  0.332  1.0
  Co  Co20  1  0.125  0.125  0.125  1.0
  Co  Co21  1  0.625  0.125  0.125  1.0
  Co  Co22  1  0.125  0.625  0.125  1.0
  Co  Co23  1  0.125  0.125  0.625  1.0
  C  C24  1  0.625  0.625  0.625  1.0
  C  C25  1  0.125  0.625  0.625  1.0
  C  C26  1  0.625  0.125  0.625  1.0
  C  C27  1  0.625  0.625  0.125  1.0
[/CIF]
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