The structure described by Sm(IrB)2 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Fddd space group. Sm(1) is bonded to four equivalent Ir(1) and four equivalent B(1) atoms to form distorted face-sharing SmB4Ir4 hexagonal bipyramids. Ir(1) is bonded in a 7-coordinate geometry to two equivalent Sm(1) and five equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to two equivalent Sm(1), five equivalent Ir(1), and one B(1) atom. is represented by the CIF card [CIF]
data_Sm(BIr)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.505
_cell_length_b   6.505
_cell_length_c   8.365
_cell_angle_alpha   112.806
_cell_angle_beta   112.806
_cell_angle_gamma   90.176
_symmetry_Int_Tables_number   1
_cell_volume   295.836
_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
  Sm  Sm0  1  0.625  0.875  0.750  1.0
  Sm  Sm1  1  0.125  0.875  0.750  1.0
  Sm  Sm2  1  0.125  0.375  0.250  1.0
  Sm  Sm3  1  0.125  0.875  0.250  1.0
  B  B4  1  0.390  0.251  0.783  1.0
  B  B5  1  0.393  0.532  0.783  1.0
  B  B6  1  0.749  0.610  0.217  1.0
  B  B7  1  0.860  0.499  0.717  1.0
  B  B8  1  0.468  0.607  0.217  1.0
  B  B9  1  0.857  0.218  0.717  1.0
  B  B10  1  0.501  0.140  0.283  1.0
  B  B11  1  0.782  0.143  0.283  1.0
  Ir  Ir12  1  0.181  0.468  0.938  1.0
  Ir  Ir13  1  0.757  0.471  0.938  1.0
  Ir  Ir14  1  0.532  0.819  0.062  1.0
  Ir  Ir15  1  0.069  0.282  0.562  1.0
  Ir  Ir16  1  0.529  0.243  0.062  1.0
  Ir  Ir17  1  0.493  0.279  0.562  1.0
  Ir  Ir18  1  0.718  0.931  0.438  1.0
  Ir  Ir19  1  0.721  0.507  0.438  1.0
[/CIF]
.
The structure described by Sm(IrB)2 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Fddd space group. Sm(1) is bonded to four equivalent Ir(1) and four equivalent B(1) atoms to form distorted face-sharing SmB4Ir4 hexagonal bipyramids. Ir(1) is bonded in a 7-coordinate geometry to two equivalent Sm(1) and five equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to two equivalent Sm(1), five equivalent Ir(1), and one B(1) atom. is represented by the CIF card [CIF]
data_Sm(BIr)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.505
_cell_length_b   6.505
_cell_length_c   8.365
_cell_angle_alpha   112.806
_cell_angle_beta   112.806
_cell_angle_gamma   90.176
_symmetry_Int_Tables_number   1
_cell_volume   295.836
_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
  Sm  Sm0  1  0.625  0.875  0.750  1.0
  Sm  Sm1  1  0.125  0.875  0.750  1.0
  Sm  Sm2  1  0.125  0.375  0.250  1.0
  Sm  Sm3  1  0.125  0.875  0.250  1.0
  B  B4  1  0.390  0.251  0.783  1.0
  B  B5  1  0.393  0.532  0.783  1.0
  B  B6  1  0.749  0.610  0.217  1.0
  B  B7  1  0.860  0.499  0.717  1.0
  B  B8  1  0.468  0.607  0.217  1.0
  B  B9  1  0.857  0.218  0.717  1.0
  B  B10  1  0.501  0.140  0.283  1.0
  B  B11  1  0.782  0.143  0.283  1.0
  Ir  Ir12  1  0.181  0.468  0.938  1.0
  Ir  Ir13  1  0.757  0.471  0.938  1.0
  Ir  Ir14  1  0.532  0.819  0.062  1.0
  Ir  Ir15  1  0.069  0.282  0.562  1.0
  Ir  Ir16  1  0.529  0.243  0.062  1.0
  Ir  Ir17  1  0.493  0.279  0.562  1.0
  Ir  Ir18  1  0.718  0.931  0.438  1.0
  Ir  Ir19  1  0.721  0.507  0.438  1.0
[/CIF]
.