The structure described by CeIrAl4Si2 crystallizes in the tetragonal P4/mmm space group. Ce(1) is bonded in a 16-coordinate geometry to eight equivalent Al(1) and eight equivalent Si(1) atoms. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent Al(1) atoms. Al(1) is bonded to two equivalent Ce(1), two equivalent Ir(1), and two equivalent Si(1) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe2Si2Ir2 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), four equivalent Al(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_CeAl4Si2Ir
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.264
_cell_length_b   4.264
_cell_length_c   7.915
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   143.916
_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  0.000  0.500  1.0
  Al  Al1  1  0.000  0.500  0.829  1.0
  Al  Al2  1  0.500  0.000  0.829  1.0
  Al  Al3  1  0.000  0.500  0.171  1.0
  Al  Al4  1  0.500  0.000  0.171  1.0
  Si  Si5  1  0.500  0.500  0.644  1.0
  Si  Si6  1  0.500  0.500  0.356  1.0
  Ir  Ir7  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by CeIrAl4Si2 crystallizes in the tetragonal P4/mmm space group. Ce(1) is bonded in a 16-coordinate geometry to eight equivalent Al(1) and eight equivalent Si(1) atoms. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent Al(1) atoms. Al(1) is bonded to two equivalent Ce(1), two equivalent Ir(1), and two equivalent Si(1) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe2Si2Ir2 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), four equivalent Al(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_CeAl4Si2Ir
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.264
_cell_length_b   4.264
_cell_length_c   7.915
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   143.916
_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  0.000  0.500  1.0
  Al  Al1  1  0.000  0.500  0.829  1.0
  Al  Al2  1  0.500  0.000  0.829  1.0
  Al  Al3  1  0.000  0.500  0.171  1.0
  Al  Al4  1  0.500  0.000  0.171  1.0
  Si  Si5  1  0.500  0.500  0.644  1.0
  Si  Si6  1  0.500  0.500  0.356  1.0
  Ir  Ir7  1  0.000  0.000  0.000  1.0
[/CIF]
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