The compound described by Cr2IrB2 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to two equivalent B(2) and three equivalent B(1) atoms. In the second Cr site, Cr(2) is bonded in a 4-coordinate geometry to two equivalent B(1) and four equivalent B(2) atoms. In the third Cr site, Cr(3) is bonded in a 8-coordinate geometry to four equivalent B(1) and four equivalent B(2) atoms. Ir(1) is bonded in a 3-coordinate geometry to one B(2) and two equivalent B(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to one Cr(2), two equivalent Cr(3), three equivalent Cr(1), two equivalent Ir(1), and one B(2) atom. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Cr(1), two equivalent Cr(2), two equivalent Cr(3), one Ir(1), one B(1), and one B(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr2B2Ir
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.250
_cell_length_b   5.250
_cell_length_c   13.463
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   148.048
_symmetry_Int_Tables_number   1
_cell_volume   196.347
_cell_formula_units_Z   4
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
  Cr  Cr0  1  0.825  0.175  0.942  1.0
  Cr  Cr1  1  0.002  0.998  0.750  1.0
  Cr  Cr2  1  0.998  0.002  0.250  1.0
  Cr  Cr3  1  0.269  0.731  0.250  1.0
  Cr  Cr4  1  0.731  0.269  0.750  1.0
  Cr  Cr5  1  0.175  0.825  0.058  1.0
  Cr  Cr6  1  0.175  0.825  0.442  1.0
  Cr  Cr7  1  0.825  0.175  0.558  1.0
  B  B8  1  0.798  0.202  0.370  1.0
  B  B9  1  0.798  0.202  0.130  1.0
  B  B10  1  0.202  0.798  0.630  1.0
  B  B11  1  0.635  0.365  0.318  1.0
  B  B12  1  0.365  0.635  0.682  1.0
  B  B13  1  0.635  0.365  0.182  1.0
  B  B14  1  0.202  0.798  0.870  1.0
  B  B15  1  0.365  0.635  0.818  1.0
  Ir  Ir16  1  0.444  0.556  0.411  1.0
  Ir  Ir17  1  0.444  0.556  0.089  1.0
  Ir  Ir18  1  0.556  0.444  0.911  1.0
  Ir  Ir19  1  0.556  0.444  0.589  1.0
[/CIF]
.
The compound described by Cr2IrB2 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to two equivalent B(2) and three equivalent B(1) atoms. In the second Cr site, Cr(2) is bonded in a 4-coordinate geometry to two equivalent B(1) and four equivalent B(2) atoms. In the third Cr site, Cr(3) is bonded in a 8-coordinate geometry to four equivalent B(1) and four equivalent B(2) atoms. Ir(1) is bonded in a 3-coordinate geometry to one B(2) and two equivalent B(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to one Cr(2), two equivalent Cr(3), three equivalent Cr(1), two equivalent Ir(1), and one B(2) atom. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Cr(1), two equivalent Cr(2), two equivalent Cr(3), one Ir(1), one B(1), and one B(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr2B2Ir
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.250
_cell_length_b   5.250
_cell_length_c   13.463
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   148.048
_symmetry_Int_Tables_number   1
_cell_volume   196.347
_cell_formula_units_Z   4
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
  Cr  Cr0  1  0.825  0.175  0.942  1.0
  Cr  Cr1  1  0.002  0.998  0.750  1.0
  Cr  Cr2  1  0.998  0.002  0.250  1.0
  Cr  Cr3  1  0.269  0.731  0.250  1.0
  Cr  Cr4  1  0.731  0.269  0.750  1.0
  Cr  Cr5  1  0.175  0.825  0.058  1.0
  Cr  Cr6  1  0.175  0.825  0.442  1.0
  Cr  Cr7  1  0.825  0.175  0.558  1.0
  B  B8  1  0.798  0.202  0.370  1.0
  B  B9  1  0.798  0.202  0.130  1.0
  B  B10  1  0.202  0.798  0.630  1.0
  B  B11  1  0.635  0.365  0.318  1.0
  B  B12  1  0.365  0.635  0.682  1.0
  B  B13  1  0.635  0.365  0.182  1.0
  B  B14  1  0.202  0.798  0.870  1.0
  B  B15  1  0.365  0.635  0.818  1.0
  Ir  Ir16  1  0.444  0.556  0.411  1.0
  Ir  Ir17  1  0.444  0.556  0.089  1.0
  Ir  Ir18  1  0.556  0.444  0.911  1.0
  Ir  Ir19  1  0.556  0.444  0.589  1.0
[/CIF]
.