The material structure described by Er4OsBr4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted corner, edge, and face-sharing ErOs2Br4 pentagonal pyramids. In the second Er site, Er(2) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted corner, edge, and face-sharing ErOs2Br4 pentagonal pyramids. Os(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Er(2) atoms. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to two equivalent Er(1) and two equivalent Er(2) atoms. In the second Br site, Br(2) is bonded in a 4-coordinate geometry to two equivalent Er(1) and two equivalent Er(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er4OsBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.787
_cell_length_b   8.787
_cell_length_c   6.507
_cell_angle_alpha   89.448
_cell_angle_beta   89.448
_cell_angle_gamma   89.291
_symmetry_Int_Tables_number   1
_cell_volume   502.331
_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
  Er  Er0  1  0.249  0.901  0.011  1.0
  Er  Er1  1  0.751  0.099  0.989  1.0
  Er  Er2  1  0.099  0.751  0.489  1.0
  Er  Er3  1  0.901  0.249  0.511  1.0
  Er  Er4  1  0.752  0.902  0.510  1.0
  Er  Er5  1  0.248  0.098  0.490  1.0
  Er  Er6  1  0.098  0.248  0.990  1.0
  Er  Er7  1  0.902  0.752  0.010  1.0
  Os  Os8  1  0.994  0.006  0.250  1.0
  Os  Os9  1  0.006  0.994  0.750  1.0
  Br  Br10  1  0.422  0.816  0.406  1.0
  Br  Br11  1  0.578  0.184  0.594  1.0
  Br  Br12  1  0.184  0.578  0.094  1.0
  Br  Br13  1  0.816  0.422  0.906  1.0
  Br  Br14  1  0.417  0.192  0.096  1.0
  Br  Br15  1  0.583  0.808  0.904  1.0
  Br  Br16  1  0.808  0.583  0.404  1.0
  Br  Br17  1  0.192  0.417  0.596  1.0
[/CIF]
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The material structure described by Er4OsBr4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted corner, edge, and face-sharing ErOs2Br4 pentagonal pyramids. In the second Er site, Er(2) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted corner, edge, and face-sharing ErOs2Br4 pentagonal pyramids. Os(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Er(2) atoms. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to two equivalent Er(1) and two equivalent Er(2) atoms. In the second Br site, Br(2) is bonded in a 4-coordinate geometry to two equivalent Er(1) and two equivalent Er(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er4OsBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.787
_cell_length_b   8.787
_cell_length_c   6.507
_cell_angle_alpha   89.448
_cell_angle_beta   89.448
_cell_angle_gamma   89.291
_symmetry_Int_Tables_number   1
_cell_volume   502.331
_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
  Er  Er0  1  0.249  0.901  0.011  1.0
  Er  Er1  1  0.751  0.099  0.989  1.0
  Er  Er2  1  0.099  0.751  0.489  1.0
  Er  Er3  1  0.901  0.249  0.511  1.0
  Er  Er4  1  0.752  0.902  0.510  1.0
  Er  Er5  1  0.248  0.098  0.490  1.0
  Er  Er6  1  0.098  0.248  0.990  1.0
  Er  Er7  1  0.902  0.752  0.010  1.0
  Os  Os8  1  0.994  0.006  0.250  1.0
  Os  Os9  1  0.006  0.994  0.750  1.0
  Br  Br10  1  0.422  0.816  0.406  1.0
  Br  Br11  1  0.578  0.184  0.594  1.0
  Br  Br12  1  0.184  0.578  0.094  1.0
  Br  Br13  1  0.816  0.422  0.906  1.0
  Br  Br14  1  0.417  0.192  0.096  1.0
  Br  Br15  1  0.583  0.808  0.904  1.0
  Br  Br16  1  0.808  0.583  0.404  1.0
  Br  Br17  1  0.192  0.417  0.596  1.0
[/CIF]
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