The compound described by UCoAl crystallizes in the orthorhombic Imma space group. U(1) is bonded in a 2-coordinate geometry to six equivalent Co(1) and six equivalent Al(1) atoms. Co(1) is bonded to six equivalent U(1), two equivalent Co(1), and four equivalent Al(1) atoms to form distorted CoU6Al4Co2 cuboctahedra that share corners with eight equivalent Al(1)U6Al2Co4 cuboctahedra, corners with ten equivalent Co(1)U6Al4Co2 cuboctahedra, edges with six equivalent Co(1)U6Al4Co2 cuboctahedra, faces with six equivalent Co(1)U6Al4Co2 cuboctahedra, and faces with twelve equivalent Al(1)U6Al2Co4 cuboctahedra. Al(1) is bonded to six equivalent U(1), four equivalent Co(1), and two equivalent Al(1) atoms to form distorted AlU6Al2Co4 cuboctahedra that share corners with eight equivalent Co(1)U6Al4Co2 cuboctahedra, corners with ten equivalent Al(1)U6Al2Co4 cuboctahedra, edges with six equivalent Al(1)U6Al2Co4 cuboctahedra, faces with six equivalent Al(1)U6Al2Co4 cuboctahedra, and faces with twelve equivalent Co(1)U6Al4Co2 cuboctahedra. is represented by the CIF card [CIF]
data_UAlCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.091
_cell_length_b   5.091
_cell_length_c   5.091
_cell_angle_alpha   85.569
_cell_angle_beta   60.560
_cell_angle_gamma   115.546
_symmetry_Int_Tables_number   1
_cell_volume   96.374
_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
  U  U0  1  0.500  0.782  0.718  1.0
  U  U1  1  0.000  0.968  0.032  1.0
  Al  Al2  1  0.750  0.375  0.875  1.0
  Al  Al3  1  0.250  0.375  0.375  1.0
  Co  Co4  1  0.250  0.875  0.375  1.0
  Co  Co5  1  0.750  0.375  0.375  1.0
[/CIF]
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The compound described by UCoAl crystallizes in the orthorhombic Imma space group. U(1) is bonded in a 2-coordinate geometry to six equivalent Co(1) and six equivalent Al(1) atoms. Co(1) is bonded to six equivalent U(1), two equivalent Co(1), and four equivalent Al(1) atoms to form distorted CoU6Al4Co2 cuboctahedra that share corners with eight equivalent Al(1)U6Al2Co4 cuboctahedra, corners with ten equivalent Co(1)U6Al4Co2 cuboctahedra, edges with six equivalent Co(1)U6Al4Co2 cuboctahedra, faces with six equivalent Co(1)U6Al4Co2 cuboctahedra, and faces with twelve equivalent Al(1)U6Al2Co4 cuboctahedra. Al(1) is bonded to six equivalent U(1), four equivalent Co(1), and two equivalent Al(1) atoms to form distorted AlU6Al2Co4 cuboctahedra that share corners with eight equivalent Co(1)U6Al4Co2 cuboctahedra, corners with ten equivalent Al(1)U6Al2Co4 cuboctahedra, edges with six equivalent Al(1)U6Al2Co4 cuboctahedra, faces with six equivalent Al(1)U6Al2Co4 cuboctahedra, and faces with twelve equivalent Co(1)U6Al4Co2 cuboctahedra. is represented by the CIF card [CIF]
data_UAlCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.091
_cell_length_b   5.091
_cell_length_c   5.091
_cell_angle_alpha   85.569
_cell_angle_beta   60.560
_cell_angle_gamma   115.546
_symmetry_Int_Tables_number   1
_cell_volume   96.374
_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
  U  U0  1  0.500  0.782  0.718  1.0
  U  U1  1  0.000  0.968  0.032  1.0
  Al  Al2  1  0.750  0.375  0.875  1.0
  Al  Al3  1  0.250  0.375  0.375  1.0
  Co  Co4  1  0.250  0.875  0.375  1.0
  Co  Co5  1  0.750  0.375  0.375  1.0
[/CIF]
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