The material structure described by Eu2O2S crystallizes in the trigonal P-3m1 space group. Eu(1) is bonded in a 7-coordinate geometry to three equivalent S(1) and four equivalent O(1) atoms. S(1) is bonded to six equivalent Eu(1) atoms to form SEu6 octahedra that share corners with twelve equivalent O(1)Eu4 tetrahedra, edges with six equivalent S(1)Eu6 octahedra, and edges with six equivalent O(1)Eu4 tetrahedra. O(1) is bonded to four equivalent Eu(1) atoms to form OEu4 tetrahedra that share corners with six equivalent S(1)Eu6 octahedra, corners with six equivalent O(1)Eu4 tetrahedra, edges with three equivalent S(1)Eu6 octahedra, and edges with three equivalent O(1)Eu4 tetrahedra. The corner-sharing octahedral tilt angles range from 25-50°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2SO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.905
_cell_length_b   3.905
_cell_length_c   6.749
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   89.129
_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  0.333  0.667  0.282  1.0
  Eu  Eu1  1  0.667  0.333  0.718  1.0
  S  S2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.333  0.667  0.630  1.0
  O  O4  1  0.667  0.333  0.370  1.0
[/CIF]
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The material structure described by Eu2O2S crystallizes in the trigonal P-3m1 space group. Eu(1) is bonded in a 7-coordinate geometry to three equivalent S(1) and four equivalent O(1) atoms. S(1) is bonded to six equivalent Eu(1) atoms to form SEu6 octahedra that share corners with twelve equivalent O(1)Eu4 tetrahedra, edges with six equivalent S(1)Eu6 octahedra, and edges with six equivalent O(1)Eu4 tetrahedra. O(1) is bonded to four equivalent Eu(1) atoms to form OEu4 tetrahedra that share corners with six equivalent S(1)Eu6 octahedra, corners with six equivalent O(1)Eu4 tetrahedra, edges with three equivalent S(1)Eu6 octahedra, and edges with three equivalent O(1)Eu4 tetrahedra. The corner-sharing octahedral tilt angles range from 25-50°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2SO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.905
_cell_length_b   3.905
_cell_length_c   6.749
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   89.129
_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  0.333  0.667  0.282  1.0
  Eu  Eu1  1  0.667  0.333  0.718  1.0
  S  S2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.333  0.667  0.630  1.0
  O  O4  1  0.667  0.333  0.370  1.0
[/CIF]
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