The material structure described by Eu2PI is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Eu(1) is bonded to three equivalent P(1) and three equivalent I(1) atoms to form a mixture of corner and edge-sharing EuP3I3 octahedra. The corner-sharing octahedra are not tilted. P(1) is bonded to six equivalent Eu(1) atoms to form PEu6 octahedra that share corners with six equivalent I(1)Eu6 octahedra, edges with six equivalent P(1)Eu6 octahedra, and edges with six equivalent I(1)Eu6 octahedra. The corner-sharing octahedral tilt angles are 11°. I(1) is bonded to six equivalent Eu(1) atoms to form IEu6 octahedra that share corners with six equivalent P(1)Eu6 octahedra, edges with six equivalent P(1)Eu6 octahedra, and edges with six equivalent I(1)Eu6 octahedra. The corner-sharing octahedral tilt angles are 11°. is represented by the CIF file [CIF]
data_Eu2PI
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.050
_cell_length_b   8.050
_cell_length_c   8.050
_cell_angle_alpha   31.796
_cell_angle_beta   31.796
_cell_angle_gamma   31.796
_symmetry_Int_Tables_number   1
_cell_volume   128.636
_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
  Eu  Eu0  1  0.233  0.233  0.233  1.0
  Eu  Eu1  1  0.767  0.767  0.767  1.0
  P  P2  1  0.500  0.500  0.500  1.0
  I  I3  1  0.000  0.000  0.000  1.0
[/CIF]
.
The material structure described by Eu2PI is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Eu(1) is bonded to three equivalent P(1) and three equivalent I(1) atoms to form a mixture of corner and edge-sharing EuP3I3 octahedra. The corner-sharing octahedra are not tilted. P(1) is bonded to six equivalent Eu(1) atoms to form PEu6 octahedra that share corners with six equivalent I(1)Eu6 octahedra, edges with six equivalent P(1)Eu6 octahedra, and edges with six equivalent I(1)Eu6 octahedra. The corner-sharing octahedral tilt angles are 11°. I(1) is bonded to six equivalent Eu(1) atoms to form IEu6 octahedra that share corners with six equivalent P(1)Eu6 octahedra, edges with six equivalent P(1)Eu6 octahedra, and edges with six equivalent I(1)Eu6 octahedra. The corner-sharing octahedral tilt angles are 11°. is represented by the CIF file [CIF]
data_Eu2PI
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.050
_cell_length_b   8.050
_cell_length_c   8.050
_cell_angle_alpha   31.796
_cell_angle_beta   31.796
_cell_angle_gamma   31.796
_symmetry_Int_Tables_number   1
_cell_volume   128.636
_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
  Eu  Eu0  1  0.233  0.233  0.233  1.0
  Eu  Eu1  1  0.767  0.767  0.767  1.0
  P  P2  1  0.500  0.500  0.500  1.0
  I  I3  1  0.000  0.000  0.000  1.0
[/CIF]
.