The structure described by IrP2 crystallizes in the monoclinic P2_1/c space group. Ir(1) is bonded to three equivalent P(1) and three equivalent P(2) atoms to form distorted IrP6 octahedra that share corners with eight equivalent Ir(1)P6 octahedra, corners with three equivalent P(1)PIr3 tetrahedra, corners with three equivalent P(2)PIr3 tetrahedra, and edges with two equivalent Ir(1)P6 octahedra. The corner-sharing octahedral tilt angles range from 56-62°. There are two inequivalent P sites. In the first P site, P(1) is bonded to three equivalent Ir(1) and one P(2) atom to form PPIr3 tetrahedra that share corners with three equivalent Ir(1)P6 octahedra, corners with four equivalent P(1)PIr3 tetrahedra, corners with nine equivalent P(2)PIr3 tetrahedra, and  an edgeedge with one P(1)PIr3 tetrahedra. The corner-sharing octahedral tilt angles range from 67-71°. In the second P site, P(2) is bonded to three equivalent Ir(1) and one P(1) atom to form PPIr3 tetrahedra that share corners with three equivalent Ir(1)P6 octahedra, corners with four equivalent P(2)PIr3 tetrahedra, corners with nine equivalent P(1)PIr3 tetrahedra, and  an edgeedge with one P(2)PIr3 tetrahedra. The corner-sharing octahedral tilt angles range from 72-77°. is represented by the CIF file [CIF]
data_P2Ir
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.772
_cell_length_b   5.807
_cell_length_c   5.872
_cell_angle_alpha   90.000
_cell_angle_beta   111.251
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   183.451
_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
  P  P0  1  0.158  0.882  0.870  1.0
  P  P1  1  0.842  0.382  0.630  1.0
  P  P2  1  0.842  0.118  0.130  1.0
  P  P3  1  0.158  0.618  0.370  1.0
  P  P4  1  0.334  0.377  0.189  1.0
  P  P5  1  0.666  0.877  0.311  1.0
  P  P6  1  0.666  0.623  0.811  1.0
  P  P7  1  0.334  0.123  0.689  1.0
  Ir  Ir8  1  0.272  0.499  0.792  1.0
  Ir  Ir9  1  0.728  0.999  0.708  1.0
  Ir  Ir10  1  0.728  0.501  0.208  1.0
  Ir  Ir11  1  0.272  0.001  0.292  1.0
[/CIF]
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The structure described by IrP2 crystallizes in the monoclinic P2_1/c space group. Ir(1) is bonded to three equivalent P(1) and three equivalent P(2) atoms to form distorted IrP6 octahedra that share corners with eight equivalent Ir(1)P6 octahedra, corners with three equivalent P(1)PIr3 tetrahedra, corners with three equivalent P(2)PIr3 tetrahedra, and edges with two equivalent Ir(1)P6 octahedra. The corner-sharing octahedral tilt angles range from 56-62°. There are two inequivalent P sites. In the first P site, P(1) is bonded to three equivalent Ir(1) and one P(2) atom to form PPIr3 tetrahedra that share corners with three equivalent Ir(1)P6 octahedra, corners with four equivalent P(1)PIr3 tetrahedra, corners with nine equivalent P(2)PIr3 tetrahedra, and  an edgeedge with one P(1)PIr3 tetrahedra. The corner-sharing octahedral tilt angles range from 67-71°. In the second P site, P(2) is bonded to three equivalent Ir(1) and one P(1) atom to form PPIr3 tetrahedra that share corners with three equivalent Ir(1)P6 octahedra, corners with four equivalent P(2)PIr3 tetrahedra, corners with nine equivalent P(1)PIr3 tetrahedra, and  an edgeedge with one P(2)PIr3 tetrahedra. The corner-sharing octahedral tilt angles range from 72-77°. is represented by the CIF file [CIF]
data_P2Ir
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.772
_cell_length_b   5.807
_cell_length_c   5.872
_cell_angle_alpha   90.000
_cell_angle_beta   111.251
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   183.451
_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
  P  P0  1  0.158  0.882  0.870  1.0
  P  P1  1  0.842  0.382  0.630  1.0
  P  P2  1  0.842  0.118  0.130  1.0
  P  P3  1  0.158  0.618  0.370  1.0
  P  P4  1  0.334  0.377  0.189  1.0
  P  P5  1  0.666  0.877  0.311  1.0
  P  P6  1  0.666  0.623  0.811  1.0
  P  P7  1  0.334  0.123  0.689  1.0
  Ir  Ir8  1  0.272  0.499  0.792  1.0
  Ir  Ir9  1  0.728  0.999  0.708  1.0
  Ir  Ir10  1  0.728  0.501  0.208  1.0
  Ir  Ir11  1  0.272  0.001  0.292  1.0
[/CIF]
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