The structure described by CeCo4Al crystallizes in the hexagonal P-6m2 space group. Ce(1) is bonded in a 18-coordinate geometry to three equivalent Co(1), twelve equivalent Co(2), and three equivalent Al(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to three equivalent Ce(1), six equivalent Co(2), and three equivalent Al(1) atoms to form CoCe3Al3Co6 cuboctahedra that share corners with nine equivalent Al(1)Ce3Co9 cuboctahedra, corners with twelve equivalent Co(2)Ce4Al2Co6 cuboctahedra, edges with six equivalent Co(1)Ce3Al3Co6 cuboctahedra, faces with two equivalent Co(1)Ce3Al3Co6 cuboctahedra, faces with three equivalent Al(1)Ce3Co9 cuboctahedra, and faces with eighteen equivalent Co(2)Ce4Al2Co6 cuboctahedra. In the second Co site, Co(2) is bonded to four equivalent Ce(1), two equivalent Co(1), four equivalent Co(2), and two equivalent Al(1) atoms to form distorted CoCe4Al2Co6 cuboctahedra that share corners with four equivalent Co(1)Ce3Al3Co6 cuboctahedra, corners with four equivalent Al(1)Ce3Co9 cuboctahedra, corners with sixteen equivalent Co(2)Ce4Al2Co6 cuboctahedra, edges with ten equivalent Co(2)Ce4Al2Co6 cuboctahedra, faces with six equivalent Co(1)Ce3Al3Co6 cuboctahedra, faces with six equivalent Al(1)Ce3Co9 cuboctahedra, and faces with ten equivalent Co(2)Ce4Al2Co6 cuboctahedra. Al(1) is bonded to three equivalent Ce(1), three equivalent Co(1), and six equivalent Co(2) atoms to form distorted AlCe3Co9 cuboctahedra that share corners with nine equivalent Co(1)Ce3Al3Co6 cuboctahedra, corners with twelve equivalent Co(2)Ce4Al2Co6 cuboctahedra, edges with six equivalent Al(1)Ce3Co9 cuboctahedra, faces with two equivalent Al(1)Ce3Co9 cuboctahedra, faces with three equivalent Co(1)Ce3Al3Co6 cuboctahedra, and faces with eighteen equivalent Co(2)Ce4Al2Co6 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeAlCo4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.860
_cell_length_b   5.101
_cell_length_c   5.098
_cell_angle_alpha   59.911
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   86.856
_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
  Ce  Ce0  1  0.000  1.000  0.000  1.0
  Al  Al1  1  0.000  0.333  0.333  1.0
  Co  Co2  1  0.000  0.667  0.667  1.0
  Co  Co3  1  0.500  0.503  0.503  1.0
  Co  Co4  1  0.500  0.503  0.994  1.0
  Co  Co5  1  0.500  0.994  0.503  1.0
[/CIF]
.
The structure described by CeCo4Al crystallizes in the hexagonal P-6m2 space group. Ce(1) is bonded in a 18-coordinate geometry to three equivalent Co(1), twelve equivalent Co(2), and three equivalent Al(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to three equivalent Ce(1), six equivalent Co(2), and three equivalent Al(1) atoms to form CoCe3Al3Co6 cuboctahedra that share corners with nine equivalent Al(1)Ce3Co9 cuboctahedra, corners with twelve equivalent Co(2)Ce4Al2Co6 cuboctahedra, edges with six equivalent Co(1)Ce3Al3Co6 cuboctahedra, faces with two equivalent Co(1)Ce3Al3Co6 cuboctahedra, faces with three equivalent Al(1)Ce3Co9 cuboctahedra, and faces with eighteen equivalent Co(2)Ce4Al2Co6 cuboctahedra. In the second Co site, Co(2) is bonded to four equivalent Ce(1), two equivalent Co(1), four equivalent Co(2), and two equivalent Al(1) atoms to form distorted CoCe4Al2Co6 cuboctahedra that share corners with four equivalent Co(1)Ce3Al3Co6 cuboctahedra, corners with four equivalent Al(1)Ce3Co9 cuboctahedra, corners with sixteen equivalent Co(2)Ce4Al2Co6 cuboctahedra, edges with ten equivalent Co(2)Ce4Al2Co6 cuboctahedra, faces with six equivalent Co(1)Ce3Al3Co6 cuboctahedra, faces with six equivalent Al(1)Ce3Co9 cuboctahedra, and faces with ten equivalent Co(2)Ce4Al2Co6 cuboctahedra. Al(1) is bonded to three equivalent Ce(1), three equivalent Co(1), and six equivalent Co(2) atoms to form distorted AlCe3Co9 cuboctahedra that share corners with nine equivalent Co(1)Ce3Al3Co6 cuboctahedra, corners with twelve equivalent Co(2)Ce4Al2Co6 cuboctahedra, edges with six equivalent Al(1)Ce3Co9 cuboctahedra, faces with two equivalent Al(1)Ce3Co9 cuboctahedra, faces with three equivalent Co(1)Ce3Al3Co6 cuboctahedra, and faces with eighteen equivalent Co(2)Ce4Al2Co6 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeAlCo4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.860
_cell_length_b   5.101
_cell_length_c   5.098
_cell_angle_alpha   59.911
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   86.856
_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
  Ce  Ce0  1  0.000  1.000  0.000  1.0
  Al  Al1  1  0.000  0.333  0.333  1.0
  Co  Co2  1  0.000  0.667  0.667  1.0
  Co  Co3  1  0.500  0.503  0.503  1.0
  Co  Co4  1  0.500  0.503  0.994  1.0
  Co  Co5  1  0.500  0.994  0.503  1.0
[/CIF]
.