The structure described by Ir11Zn6B6 crystallizes in the orthorhombic Pmmm space group. There are four inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted body-centered cubic geometry to four equivalent Zn(4) and four equivalent B(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to four equivalent Zn(3) and four equivalent B(2) atoms. In the third Ir site, Ir(3) is bonded in a 6-coordinate geometry to two equivalent Zn(2), two equivalent B(1), and two equivalent B(2) atoms. In the fourth Ir site, Ir(4) is bonded in a distorted body-centered cubic geometry to two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(4), and two equivalent B(2) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a body-centered cubic geometry to eight equivalent Ir(4) atoms. In the second Zn site, Zn(2) is bonded to eight equivalent Ir(3) and two equivalent B(1) atoms to form distorted face-sharing ZnB2Ir8 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 11-coordinate geometry to four equivalent Ir(2), four equivalent Ir(4), one Zn(3), and two equivalent B(2) atoms. In the fourth Zn site, Zn(4) is bonded in a 6-coordinate geometry to two equivalent Ir(1) and four equivalent Ir(4) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to two equivalent Ir(1), four equivalent Ir(3), and one Zn(2) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to two equivalent Ir(2), two equivalent Ir(3), two equivalent Ir(4), and one Zn(3) atom. is represented by the CIF file [CIF]
data_Zn6B6Ir11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.886
_cell_length_b   8.648
_cell_length_c   11.540
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   288.043
_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
  Zn  Zn0  1  0.500  0.000  0.500  1.0
  Zn  Zn1  1  0.500  0.500  0.000  1.0
  Zn  Zn2  1  0.500  0.648  0.500  1.0
  Zn  Zn3  1  0.500  0.352  0.500  1.0
  Zn  Zn4  1  0.500  0.000  0.206  1.0
  Zn  Zn5  1  0.500  0.000  0.794  1.0
  B  B6  1  0.500  0.805  0.000  1.0
  B  B7  1  0.500  0.195  0.000  1.0
  B  B8  1  0.500  0.684  0.269  1.0
  B  B9  1  0.500  0.316  0.269  1.0
  B  B10  1  0.500  0.316  0.731  1.0
  B  B11  1  0.500  0.684  0.731  1.0
  Ir  Ir12  1  0.000  0.000  0.000  1.0
  Ir  Ir13  1  0.000  0.500  0.318  1.0
  Ir  Ir14  1  0.000  0.500  0.682  1.0
  Ir  Ir15  1  0.000  0.711  0.123  1.0
  Ir  Ir16  1  0.000  0.289  0.123  1.0
  Ir  Ir17  1  0.000  0.289  0.877  1.0
  Ir  Ir18  1  0.000  0.711  0.877  1.0
  Ir  Ir19  1  0.000  0.826  0.355  1.0
  Ir  Ir20  1  0.000  0.174  0.355  1.0
  Ir  Ir21  1  0.000  0.174  0.645  1.0
  Ir  Ir22  1  0.000  0.826  0.645  1.0
[/CIF]
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The structure described by Ir11Zn6B6 crystallizes in the orthorhombic Pmmm space group. There are four inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted body-centered cubic geometry to four equivalent Zn(4) and four equivalent B(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to four equivalent Zn(3) and four equivalent B(2) atoms. In the third Ir site, Ir(3) is bonded in a 6-coordinate geometry to two equivalent Zn(2), two equivalent B(1), and two equivalent B(2) atoms. In the fourth Ir site, Ir(4) is bonded in a distorted body-centered cubic geometry to two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(4), and two equivalent B(2) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a body-centered cubic geometry to eight equivalent Ir(4) atoms. In the second Zn site, Zn(2) is bonded to eight equivalent Ir(3) and two equivalent B(1) atoms to form distorted face-sharing ZnB2Ir8 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 11-coordinate geometry to four equivalent Ir(2), four equivalent Ir(4), one Zn(3), and two equivalent B(2) atoms. In the fourth Zn site, Zn(4) is bonded in a 6-coordinate geometry to two equivalent Ir(1) and four equivalent Ir(4) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to two equivalent Ir(1), four equivalent Ir(3), and one Zn(2) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to two equivalent Ir(2), two equivalent Ir(3), two equivalent Ir(4), and one Zn(3) atom. is represented by the CIF file [CIF]
data_Zn6B6Ir11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.886
_cell_length_b   8.648
_cell_length_c   11.540
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   288.043
_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
  Zn  Zn0  1  0.500  0.000  0.500  1.0
  Zn  Zn1  1  0.500  0.500  0.000  1.0
  Zn  Zn2  1  0.500  0.648  0.500  1.0
  Zn  Zn3  1  0.500  0.352  0.500  1.0
  Zn  Zn4  1  0.500  0.000  0.206  1.0
  Zn  Zn5  1  0.500  0.000  0.794  1.0
  B  B6  1  0.500  0.805  0.000  1.0
  B  B7  1  0.500  0.195  0.000  1.0
  B  B8  1  0.500  0.684  0.269  1.0
  B  B9  1  0.500  0.316  0.269  1.0
  B  B10  1  0.500  0.316  0.731  1.0
  B  B11  1  0.500  0.684  0.731  1.0
  Ir  Ir12  1  0.000  0.000  0.000  1.0
  Ir  Ir13  1  0.000  0.500  0.318  1.0
  Ir  Ir14  1  0.000  0.500  0.682  1.0
  Ir  Ir15  1  0.000  0.711  0.123  1.0
  Ir  Ir16  1  0.000  0.289  0.123  1.0
  Ir  Ir17  1  0.000  0.289  0.877  1.0
  Ir  Ir18  1  0.000  0.711  0.877  1.0
  Ir  Ir19  1  0.000  0.826  0.355  1.0
  Ir  Ir20  1  0.000  0.174  0.355  1.0
  Ir  Ir21  1  0.000  0.174  0.645  1.0
  Ir  Ir22  1  0.000  0.826  0.645  1.0
[/CIF]
.