The compound described by EuOBr2 crystallizes in the orthorhombic Pnma space group. Eu(1) is bonded in a 2-coordinate geometry to two equivalent O(1), three equivalent Br(1), and four equivalent Br(2) atoms. O(1) is bonded in a bent 120 degrees geometry to two equivalent Eu(1) atoms. There are two inequivalent Br sites. In the first Br site, Br(2) is bonded to four equivalent Eu(1) atoms to form a mixture of distorted edge and corner-sharing BrEu4 tetrahedra. In the second Br site, Br(1) is bonded in a trigonal non-coplanar geometry to three equivalent Eu(1) atoms. is represented by the CIF file [CIF]
data_EuBr2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.127
_cell_length_b   9.236
_cell_length_c   10.730
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   409.049
_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
  Eu  Eu0  1  0.250  0.607  0.279  1.0
  Eu  Eu1  1  0.750  0.393  0.721  1.0
  Eu  Eu2  1  0.750  0.107  0.221  1.0
  Eu  Eu3  1  0.250  0.893  0.779  1.0
  Br  Br4  1  0.250  0.332  0.116  1.0
  Br  Br5  1  0.750  0.668  0.884  1.0
  Br  Br6  1  0.750  0.832  0.384  1.0
  Br  Br7  1  0.250  0.168  0.616  1.0
  Br  Br8  1  0.250  0.615  0.597  1.0
  Br  Br9  1  0.750  0.385  0.403  1.0
  Br  Br10  1  0.750  0.115  0.903  1.0
  Br  Br11  1  0.250  0.885  0.097  1.0
  O  O12  1  0.250  0.108  0.303  1.0
  O  O13  1  0.750  0.892  0.697  1.0
  O  O14  1  0.750  0.608  0.197  1.0
  O  O15  1  0.250  0.392  0.803  1.0
[/CIF]
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The compound described by EuOBr2 crystallizes in the orthorhombic Pnma space group. Eu(1) is bonded in a 2-coordinate geometry to two equivalent O(1), three equivalent Br(1), and four equivalent Br(2) atoms. O(1) is bonded in a bent 120 degrees geometry to two equivalent Eu(1) atoms. There are two inequivalent Br sites. In the first Br site, Br(2) is bonded to four equivalent Eu(1) atoms to form a mixture of distorted edge and corner-sharing BrEu4 tetrahedra. In the second Br site, Br(1) is bonded in a trigonal non-coplanar geometry to three equivalent Eu(1) atoms. is represented by the CIF file [CIF]
data_EuBr2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.127
_cell_length_b   9.236
_cell_length_c   10.730
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   409.049
_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
  Eu  Eu0  1  0.250  0.607  0.279  1.0
  Eu  Eu1  1  0.750  0.393  0.721  1.0
  Eu  Eu2  1  0.750  0.107  0.221  1.0
  Eu  Eu3  1  0.250  0.893  0.779  1.0
  Br  Br4  1  0.250  0.332  0.116  1.0
  Br  Br5  1  0.750  0.668  0.884  1.0
  Br  Br6  1  0.750  0.832  0.384  1.0
  Br  Br7  1  0.250  0.168  0.616  1.0
  Br  Br8  1  0.250  0.615  0.597  1.0
  Br  Br9  1  0.750  0.385  0.403  1.0
  Br  Br10  1  0.750  0.115  0.903  1.0
  Br  Br11  1  0.250  0.885  0.097  1.0
  O  O12  1  0.250  0.108  0.303  1.0
  O  O13  1  0.750  0.892  0.697  1.0
  O  O14  1  0.750  0.608  0.197  1.0
  O  O15  1  0.250  0.392  0.803  1.0
[/CIF]
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