The crystal structure described by UTaC2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. U(1) is bonded to six equivalent C(1) atoms to form UC6 octahedra that share corners with six equivalent Ta(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Ta(1)C6 octahedra. The corner-sharing octahedral tilt angles are 6°. Ta(1) is bonded to six equivalent C(1) atoms to form TaC6 octahedra that share corners with six equivalent U(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Ta(1)C6 octahedra. The corner-sharing octahedral tilt angles are 6°. C(1) is bonded to three equivalent U(1) and three equivalent Ta(1) atoms to form a mixture of corner and edge-sharing CU3Ta3 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_UTaC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.922
_cell_length_b   5.922
_cell_length_c   5.922
_cell_angle_alpha   31.732
_cell_angle_beta   31.732
_cell_angle_gamma   31.732
_symmetry_Int_Tables_number   1
_cell_volume   51.023
_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
  U  U0  1  0.500  0.500  0.500  1.0
  Ta  Ta1  1  0.000  0.000  0.000  1.0
  C  C2  1  0.742  0.742  0.742  1.0
  C  C3  1  0.258  0.258  0.258  1.0
[/CIF]
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The crystal structure described by UTaC2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. U(1) is bonded to six equivalent C(1) atoms to form UC6 octahedra that share corners with six equivalent Ta(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Ta(1)C6 octahedra. The corner-sharing octahedral tilt angles are 6°. Ta(1) is bonded to six equivalent C(1) atoms to form TaC6 octahedra that share corners with six equivalent U(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Ta(1)C6 octahedra. The corner-sharing octahedral tilt angles are 6°. C(1) is bonded to three equivalent U(1) and three equivalent Ta(1) atoms to form a mixture of corner and edge-sharing CU3Ta3 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_UTaC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.922
_cell_length_b   5.922
_cell_length_c   5.922
_cell_angle_alpha   31.732
_cell_angle_beta   31.732
_cell_angle_gamma   31.732
_symmetry_Int_Tables_number   1
_cell_volume   51.023
_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
  U  U0  1  0.500  0.500  0.500  1.0
  Ta  Ta1  1  0.000  0.000  0.000  1.0
  C  C2  1  0.742  0.742  0.742  1.0
  C  C3  1  0.258  0.258  0.258  1.0
[/CIF]
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