data_InSiIr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.45
_cell_length_b   4.45
_cell_length_c   4.45
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   InSiIr2
_chemical_formula_sum   'In1 Si1 Ir2'
_cell_volume   62.14
_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
  In  In0  1  0.14  0.14  0.14  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ir  Ir1  1  0.72  0.72  0.72  1.0
  Ir  Ir2  1  0.57  0.57  0.57  1.0

data_InSiIr2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.45
_cell_length_b   4.45
_cell_length_c   10.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   InSiIr2
_chemical_formula_sum   'In3 Si3 Ir6'
_cell_volume   186.41
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  In  In0  3  0.0  0.0  0.86  1.0
  Si  Si1  3  0.0  0.0  0.0  1.0
  Ir  Ir2  3  0.0  0.0  0.28  1.0
  Ir  Ir3  3  0.0  0.0  0.43  1.0

In Si Ir Ir
In Si Ir Ir 0 1 o o o 2 3 o o o 
Ir2InSi crystallizes in the trigonal R3m space group. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted single-bond geometry to one Ir(2) atom. The Ir(1)-Ir(2) bond length is 1.56 Å. In the second Ir site, Ir(2) is bonded in a 7-coordinate geometry to one Ir(1), three equivalent In(1), and three equivalent Si(1) atoms. All Ir(2)-In(1) bond lengths are 2.77 Å. All Ir(2)-Si(1) bond lengths are 2.77 Å. In(1) is bonded in a distorted single-bond geometry to three equivalent Ir(2) and one Si(1) atom. The In(1)-Si(1) bond length is 1.56 Å. Si(1) is bonded in a single-bond geometry to three equivalent Ir(2) and one In(1) atom.