The material described by Eu2O2SO4 crystallizes in the monoclinic C2/c space group. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. S(1) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) atoms to form a mixture of edge and corner-sharing OEu4 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Eu(1) and one S(1) atom. is represented by the CIF file [CIF]
data_Eu2SO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.252
_cell_length_b   7.252
_cell_length_c   8.125
_cell_angle_alpha   73.315
_cell_angle_beta   73.315
_cell_angle_gamma   33.533
_symmetry_Int_Tables_number   1
_cell_volume   225.177
_cell_formula_units_Z   2
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  0.679  0.654  0.917  1.0
  Eu  Eu1  1  0.346  0.321  0.583  1.0
  Eu  Eu2  1  0.321  0.346  0.083  1.0
  Eu  Eu3  1  0.654  0.679  0.417  1.0
  S  S4  1  0.948  0.052  0.750  1.0
  S  S5  1  0.052  0.948  0.250  1.0
  O  O6  1  0.266  0.225  0.877  1.0
  O  O7  1  0.775  0.734  0.623  1.0
  O  O8  1  0.734  0.775  0.123  1.0
  O  O9  1  0.225  0.266  0.377  1.0
  O  O10  1  0.738  0.260  0.898  1.0
  O  O11  1  0.740  0.262  0.602  1.0
  O  O12  1  0.262  0.740  0.102  1.0
  O  O13  1  0.260  0.738  0.398  1.0
  O  O14  1  0.237  0.946  0.705  1.0
  O  O15  1  0.054  0.763  0.795  1.0
  O  O16  1  0.763  0.054  0.295  1.0
  O  O17  1  0.946  0.237  0.205  1.0
[/CIF]
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The material described by Eu2O2SO4 crystallizes in the monoclinic C2/c space group. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. S(1) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) atoms to form a mixture of edge and corner-sharing OEu4 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Eu(1) and one S(1) atom. is represented by the CIF file [CIF]
data_Eu2SO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.252
_cell_length_b   7.252
_cell_length_c   8.125
_cell_angle_alpha   73.315
_cell_angle_beta   73.315
_cell_angle_gamma   33.533
_symmetry_Int_Tables_number   1
_cell_volume   225.177
_cell_formula_units_Z   2
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  0.679  0.654  0.917  1.0
  Eu  Eu1  1  0.346  0.321  0.583  1.0
  Eu  Eu2  1  0.321  0.346  0.083  1.0
  Eu  Eu3  1  0.654  0.679  0.417  1.0
  S  S4  1  0.948  0.052  0.750  1.0
  S  S5  1  0.052  0.948  0.250  1.0
  O  O6  1  0.266  0.225  0.877  1.0
  O  O7  1  0.775  0.734  0.623  1.0
  O  O8  1  0.734  0.775  0.123  1.0
  O  O9  1  0.225  0.266  0.377  1.0
  O  O10  1  0.738  0.260  0.898  1.0
  O  O11  1  0.740  0.262  0.602  1.0
  O  O12  1  0.262  0.740  0.102  1.0
  O  O13  1  0.260  0.738  0.398  1.0
  O  O14  1  0.237  0.946  0.705  1.0
  O  O15  1  0.054  0.763  0.795  1.0
  O  O16  1  0.763  0.054  0.295  1.0
  O  O17  1  0.946  0.237  0.205  1.0
[/CIF]
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