The structure described by Ce2Ir5B2 crystallizes in the trigonal R-3m space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 12-coordinate geometry to one Ce(2), three equivalent Ir(3), and nine equivalent Ir(1) atoms. In the second Ce site, Ce(2) is bonded in a 20-coordinate geometry to one Ce(1), one Ce(2), six equivalent Ir(1), six equivalent Ir(2), three equivalent B(1), and three equivalent B(2) atoms. There are three inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 2-coordinate geometry to two equivalent Ce(2), three equivalent Ce(1), one Ir(3), one B(1), and one B(2) atom. In the second Ir site, Ir(2) is bonded in a distorted square co-planar geometry to four equivalent Ce(2), two equivalent B(1), and two equivalent B(2) atoms. In the third Ir site, Ir(3) is bonded to six equivalent Ce(1) and six equivalent Ir(1) atoms to form edge-sharing IrCe6Ir6 cuboctahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent Ce(2), three equivalent Ir(1), and three equivalent Ir(2) atoms. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Ce(2), three equivalent Ir(1), and three equivalent Ir(2) atoms. is represented by the CIF file [CIF]
data_Ce2B2Ir5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.051
_cell_length_b   11.051
_cell_length_c   11.051
_cell_angle_alpha   28.867
_cell_angle_beta   28.867
_cell_angle_gamma   28.867
_symmetry_Int_Tables_number   1
_cell_volume   278.141
_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
  Ce  Ce0  1  0.152  0.152  0.152  1.0
  Ce  Ce1  1  0.949  0.949  0.949  1.0
  Ce  Ce2  1  0.848  0.848  0.848  1.0
  Ce  Ce3  1  0.051  0.051  0.051  1.0
  B  B4  1  0.618  0.618  0.618  1.0
  B  B5  1  0.717  0.717  0.717  1.0
  B  B6  1  0.382  0.382  0.382  1.0
  B  B7  1  0.283  0.283  0.283  1.0
  Ir  Ir8  1  0.406  0.899  0.406  1.0
  Ir  Ir9  1  0.899  0.406  0.406  1.0
  Ir  Ir10  1  0.500  0.500  0.000  1.0
  Ir  Ir11  1  0.500  0.000  0.500  1.0
  Ir  Ir12  1  0.000  0.500  0.500  1.0
  Ir  Ir13  1  0.500  0.500  0.500  1.0
  Ir  Ir14  1  0.594  0.101  0.594  1.0
  Ir  Ir15  1  0.594  0.594  0.101  1.0
  Ir  Ir16  1  0.101  0.594  0.594  1.0
  Ir  Ir17  1  0.406  0.406  0.899  1.0
[/CIF]
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The structure described by Ce2Ir5B2 crystallizes in the trigonal R-3m space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 12-coordinate geometry to one Ce(2), three equivalent Ir(3), and nine equivalent Ir(1) atoms. In the second Ce site, Ce(2) is bonded in a 20-coordinate geometry to one Ce(1), one Ce(2), six equivalent Ir(1), six equivalent Ir(2), three equivalent B(1), and three equivalent B(2) atoms. There are three inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 2-coordinate geometry to two equivalent Ce(2), three equivalent Ce(1), one Ir(3), one B(1), and one B(2) atom. In the second Ir site, Ir(2) is bonded in a distorted square co-planar geometry to four equivalent Ce(2), two equivalent B(1), and two equivalent B(2) atoms. In the third Ir site, Ir(3) is bonded to six equivalent Ce(1) and six equivalent Ir(1) atoms to form edge-sharing IrCe6Ir6 cuboctahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent Ce(2), three equivalent Ir(1), and three equivalent Ir(2) atoms. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Ce(2), three equivalent Ir(1), and three equivalent Ir(2) atoms. is represented by the CIF file [CIF]
data_Ce2B2Ir5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.051
_cell_length_b   11.051
_cell_length_c   11.051
_cell_angle_alpha   28.867
_cell_angle_beta   28.867
_cell_angle_gamma   28.867
_symmetry_Int_Tables_number   1
_cell_volume   278.141
_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
  Ce  Ce0  1  0.152  0.152  0.152  1.0
  Ce  Ce1  1  0.949  0.949  0.949  1.0
  Ce  Ce2  1  0.848  0.848  0.848  1.0
  Ce  Ce3  1  0.051  0.051  0.051  1.0
  B  B4  1  0.618  0.618  0.618  1.0
  B  B5  1  0.717  0.717  0.717  1.0
  B  B6  1  0.382  0.382  0.382  1.0
  B  B7  1  0.283  0.283  0.283  1.0
  Ir  Ir8  1  0.406  0.899  0.406  1.0
  Ir  Ir9  1  0.899  0.406  0.406  1.0
  Ir  Ir10  1  0.500  0.500  0.000  1.0
  Ir  Ir11  1  0.500  0.000  0.500  1.0
  Ir  Ir12  1  0.000  0.500  0.500  1.0
  Ir  Ir13  1  0.500  0.500  0.500  1.0
  Ir  Ir14  1  0.594  0.101  0.594  1.0
  Ir  Ir15  1  0.594  0.594  0.101  1.0
  Ir  Ir16  1  0.101  0.594  0.594  1.0
  Ir  Ir17  1  0.406  0.406  0.899  1.0
[/CIF]
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