data_SrNbIr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.22
_cell_length_b   3.22
_cell_length_c   7.75
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrNbIr2
_chemical_formula_sum   'Sr1 Nb1 Ir2'
_cell_volume   80.06
_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
  Sr  Sr3  1  0.0  0.0  0.0  1.0
  Nb  Nb2  1  0.0  0.0  0.87  1.0
  Ir  Ir0  1  0.61  0.61  0.4  1.0
  Ir  Ir1  1  0.61  0.61  0.35  1.0

data_SrNbIr2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.55
_cell_length_b   4.55
_cell_length_c   7.75
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrNbIr2
_chemical_formula_sum   'Sr2 Nb2 Ir4'
_cell_volume   160.13
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Sr  Sr0  2  0.0  0.0  0.0  1.0
  Nb  Nb1  2  0.0  0.0  0.87  1.0
  Ir  Ir2  2  0.11  0.5  0.35  1.0
  Ir  Ir3  2  0.11  0.5  0.4  1.0

Sr Nb Ir Ir
Sr Nb Ir Ir 0 1 o o - 2 3 o o o 
SrNb(Ir)2 is Cubic alpha N2-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two niobium;strontium molecules and two Ir clusters. In each Ir cluster, there are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a single-bond geometry to one Ir(2) atom. The Ir(1)-Ir(2) bond length is 0.39 Å. In the second Ir site, Ir(2) is bonded in a single-bond geometry to one Ir(1) atom.