The crystal structure described by CeIr2Si2 crystallizes in the tetragonal I4/mmm space group. Ce(1) is bonded in a 16-coordinate geometry to eight equivalent Ir(1) and eight equivalent Si(1) atoms. Ir(1) is bonded in a 4-coordinate geometry to four equivalent Ce(1) and four equivalent Si(1) atoms. Si(1) is bonded in a 4-coordinate geometry to four equivalent Ce(1) and four equivalent Ir(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce(SiIr)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.872
_cell_length_b   5.872
_cell_length_c   5.872
_cell_angle_alpha   138.181
_cell_angle_beta   138.181
_cell_angle_gamma   60.626
_symmetry_Int_Tables_number   1
_cell_volume   89.067
_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  0.000  1.0
  Si  Si1  1  0.750  0.250  0.500  1.0
  Si  Si2  1  0.250  0.750  0.500  1.0
  Ir  Ir3  1  0.633  0.633  0.000  1.0
  Ir  Ir4  1  0.367  0.367  0.000  1.0
[/CIF]
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The crystal structure described by CeIr2Si2 crystallizes in the tetragonal I4/mmm space group. Ce(1) is bonded in a 16-coordinate geometry to eight equivalent Ir(1) and eight equivalent Si(1) atoms. Ir(1) is bonded in a 4-coordinate geometry to four equivalent Ce(1) and four equivalent Si(1) atoms. Si(1) is bonded in a 4-coordinate geometry to four equivalent Ce(1) and four equivalent Ir(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce(SiIr)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.872
_cell_length_b   5.872
_cell_length_c   5.872
_cell_angle_alpha   138.181
_cell_angle_beta   138.181
_cell_angle_gamma   60.626
_symmetry_Int_Tables_number   1
_cell_volume   89.067
_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  0.000  1.0
  Si  Si1  1  0.750  0.250  0.500  1.0
  Si  Si2  1  0.250  0.750  0.500  1.0
  Ir  Ir3  1  0.633  0.633  0.000  1.0
  Ir  Ir4  1  0.367  0.367  0.000  1.0
[/CIF]
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