The structure described by Y4OsBr4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted edge, face, and corner-sharing YOs2Br4 pentagonal pyramids. In the second Y site, Y(2) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted edge, face, and corner-sharing YOs2Br4 pentagonal pyramids. Os(1) is bonded in a 8-coordinate geometry to four equivalent Y(1) and four equivalent Y(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 Y(1) and two equivalent Y(2) atoms. In the second Br site, Br(2) is bonded in a 4-coordinate geometry to two equivalent Y(1) and two equivalent Y(2) atoms. is represented by the CIF file [CIF]
data_Y4OsBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.600
_cell_length_b   8.875
_cell_length_c   8.875
_cell_angle_alpha   89.319
_cell_angle_beta   89.373
_cell_angle_gamma   89.373
_symmetry_Int_Tables_number   1
_cell_volume   519.805
_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
  Y  Y0  1  0.010  0.251  0.900  1.0
  Y  Y1  1  0.510  0.900  0.251  1.0
  Y  Y2  1  0.011  0.902  0.750  1.0
  Y  Y3  1  0.511  0.750  0.902  1.0
  Y  Y4  1  0.989  0.098  0.250  1.0
  Y  Y5  1  0.490  0.100  0.749  1.0
  Y  Y6  1  0.990  0.749  0.100  1.0
  Y  Y7  1  0.489  0.250  0.098  1.0
  Os  Os8  1  0.750  0.006  0.994  1.0
  Os  Os9  1  0.250  0.994  0.006  1.0
  Br  Br10  1  0.405  0.422  0.816  1.0
  Br  Br11  1  0.596  0.193  0.417  1.0
  Br  Br12  1  0.904  0.583  0.807  1.0
  Br  Br13  1  0.404  0.807  0.583  1.0
  Br  Br14  1  0.096  0.417  0.193  1.0
  Br  Br15  1  0.595  0.578  0.184  1.0
  Br  Br16  1  0.905  0.816  0.422  1.0
  Br  Br17  1  0.095  0.184  0.578  1.0
[/CIF]
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The structure described by Y4OsBr4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted edge, face, and corner-sharing YOs2Br4 pentagonal pyramids. In the second Y site, Y(2) is bonded to two equivalent Os(1), two equivalent Br(1), and two equivalent Br(2) atoms to form a mixture of distorted edge, face, and corner-sharing YOs2Br4 pentagonal pyramids. Os(1) is bonded in a 8-coordinate geometry to four equivalent Y(1) and four equivalent Y(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 Y(1) and two equivalent Y(2) atoms. In the second Br site, Br(2) is bonded in a 4-coordinate geometry to two equivalent Y(1) and two equivalent Y(2) atoms. is represented by the CIF file [CIF]
data_Y4OsBr4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.600
_cell_length_b   8.875
_cell_length_c   8.875
_cell_angle_alpha   89.319
_cell_angle_beta   89.373
_cell_angle_gamma   89.373
_symmetry_Int_Tables_number   1
_cell_volume   519.805
_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
  Y  Y0  1  0.010  0.251  0.900  1.0
  Y  Y1  1  0.510  0.900  0.251  1.0
  Y  Y2  1  0.011  0.902  0.750  1.0
  Y  Y3  1  0.511  0.750  0.902  1.0
  Y  Y4  1  0.989  0.098  0.250  1.0
  Y  Y5  1  0.490  0.100  0.749  1.0
  Y  Y6  1  0.990  0.749  0.100  1.0
  Y  Y7  1  0.489  0.250  0.098  1.0
  Os  Os8  1  0.750  0.006  0.994  1.0
  Os  Os9  1  0.250  0.994  0.006  1.0
  Br  Br10  1  0.405  0.422  0.816  1.0
  Br  Br11  1  0.596  0.193  0.417  1.0
  Br  Br12  1  0.904  0.583  0.807  1.0
  Br  Br13  1  0.404  0.807  0.583  1.0
  Br  Br14  1  0.096  0.417  0.193  1.0
  Br  Br15  1  0.595  0.578  0.184  1.0
  Br  Br16  1  0.905  0.816  0.422  1.0
  Br  Br17  1  0.095  0.184  0.578  1.0
[/CIF]
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