The structure described by Tb2Ir3Si5 crystallizes in the orthorhombic Ibam space group. Tb(1) is bonded in a 17-coordinate geometry to two equivalent Ir(1), five equivalent Ir(2), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 6-coordinate geometry to four equivalent Tb(1), two equivalent Si(2), and four equivalent Si(1) atoms. In the second Ir site, Ir(2) is bonded in a 5-coordinate geometry to five equivalent Tb(1), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ir(2), two equivalent Ir(1), and two equivalent Si(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ir(1), two equivalent Ir(2), and two equivalent Si(1) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ir(2) atoms. is represented by the CIF file [CIF]
data_Tb2Si5Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.154
_cell_length_b   8.154
_cell_length_c   8.154
_cell_angle_alpha   137.990
_cell_angle_beta   104.532
_cell_angle_gamma   90.347
_symmetry_Int_Tables_number   1
_cell_volume   335.370
_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
  Tb  Tb0  1  0.402  0.631  0.771  1.0
  Tb  Tb1  1  0.598  0.369  0.229  1.0
  Tb  Tb2  1  0.140  0.869  0.271  1.0
  Tb  Tb3  1  0.860  0.131  0.729  1.0
  Si  Si4  1  0.738  0.894  0.844  1.0
  Si  Si5  1  0.262  0.106  0.156  1.0
  Si  Si6  1  0.950  0.606  0.344  1.0
  Si  Si7  1  0.050  0.394  0.656  1.0
  Si  Si8  1  0.226  0.976  0.750  1.0
  Si  Si9  1  0.774  0.524  0.750  1.0
  Si  Si10  1  0.774  0.024  0.250  1.0
  Si  Si11  1  0.226  0.476  0.250  1.0
  Si  Si12  1  0.500  0.750  0.250  1.0
  Si  Si13  1  0.500  0.250  0.750  1.0
  Ir  Ir14  1  0.000  0.750  0.750  1.0
  Ir  Ir15  1  0.000  0.250  0.250  1.0
  Ir  Ir16  1  0.473  0.860  0.613  1.0
  Ir  Ir17  1  0.527  0.140  0.387  1.0
  Ir  Ir18  1  0.753  0.640  0.113  1.0
  Ir  Ir19  1  0.247  0.360  0.887  1.0
[/CIF]
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The structure described by Tb2Ir3Si5 crystallizes in the orthorhombic Ibam space group. Tb(1) is bonded in a 17-coordinate geometry to two equivalent Ir(1), five equivalent Ir(2), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 6-coordinate geometry to four equivalent Tb(1), two equivalent Si(2), and four equivalent Si(1) atoms. In the second Ir site, Ir(2) is bonded in a 5-coordinate geometry to five equivalent Tb(1), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ir(2), two equivalent Ir(1), and two equivalent Si(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ir(1), two equivalent Ir(2), and two equivalent Si(1) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ir(2) atoms. is represented by the CIF file [CIF]
data_Tb2Si5Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.154
_cell_length_b   8.154
_cell_length_c   8.154
_cell_angle_alpha   137.990
_cell_angle_beta   104.532
_cell_angle_gamma   90.347
_symmetry_Int_Tables_number   1
_cell_volume   335.370
_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
  Tb  Tb0  1  0.402  0.631  0.771  1.0
  Tb  Tb1  1  0.598  0.369  0.229  1.0
  Tb  Tb2  1  0.140  0.869  0.271  1.0
  Tb  Tb3  1  0.860  0.131  0.729  1.0
  Si  Si4  1  0.738  0.894  0.844  1.0
  Si  Si5  1  0.262  0.106  0.156  1.0
  Si  Si6  1  0.950  0.606  0.344  1.0
  Si  Si7  1  0.050  0.394  0.656  1.0
  Si  Si8  1  0.226  0.976  0.750  1.0
  Si  Si9  1  0.774  0.524  0.750  1.0
  Si  Si10  1  0.774  0.024  0.250  1.0
  Si  Si11  1  0.226  0.476  0.250  1.0
  Si  Si12  1  0.500  0.750  0.250  1.0
  Si  Si13  1  0.500  0.250  0.750  1.0
  Ir  Ir14  1  0.000  0.750  0.750  1.0
  Ir  Ir15  1  0.000  0.250  0.250  1.0
  Ir  Ir16  1  0.473  0.860  0.613  1.0
  Ir  Ir17  1  0.527  0.140  0.387  1.0
  Ir  Ir18  1  0.753  0.640  0.113  1.0
  Ir  Ir19  1  0.247  0.360  0.887  1.0
[/CIF]
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