The compound described by UNbC2 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 Nb(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Nb(1)C6 octahedra. The corner-sharing octahedral tilt angles are 4°. Nb(1) is bonded to six equivalent C(1) atoms to form NbC6 octahedra that share corners with six equivalent U(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Nb(1)C6 octahedra. The corner-sharing octahedral tilt angles are 4°. C(1) is bonded to three equivalent U(1) and three equivalent Nb(1) atoms to form a mixture of corner and edge-sharing CU3Nb3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_UNbC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.898
_cell_length_b   5.898
_cell_length_c   5.898
_cell_angle_alpha   32.248
_cell_angle_beta   32.248
_cell_angle_gamma   32.248
_symmetry_Int_Tables_number   1
_cell_volume   51.922
_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  0.000  0.000  0.000  1.0
  Nb  Nb1  1  0.500  0.500  0.500  1.0
  C  C2  1  0.244  0.244  0.244  1.0
  C  C3  1  0.756  0.756  0.756  1.0
[/CIF]
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The compound described by UNbC2 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 Nb(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Nb(1)C6 octahedra. The corner-sharing octahedral tilt angles are 4°. Nb(1) is bonded to six equivalent C(1) atoms to form NbC6 octahedra that share corners with six equivalent U(1)C6 octahedra, edges with six equivalent U(1)C6 octahedra, and edges with six equivalent Nb(1)C6 octahedra. The corner-sharing octahedral tilt angles are 4°. C(1) is bonded to three equivalent U(1) and three equivalent Nb(1) atoms to form a mixture of corner and edge-sharing CU3Nb3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_UNbC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.898
_cell_length_b   5.898
_cell_length_c   5.898
_cell_angle_alpha   32.248
_cell_angle_beta   32.248
_cell_angle_gamma   32.248
_symmetry_Int_Tables_number   1
_cell_volume   51.922
_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  0.000  0.000  0.000  1.0
  Nb  Nb1  1  0.500  0.500  0.500  1.0
  C  C2  1  0.244  0.244  0.244  1.0
  C  C3  1  0.756  0.756  0.756  1.0
[/CIF]
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