data_SrW2Br
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.24
_cell_length_b   10.24
_cell_length_c   10.24
_cell_angle_alpha   17.12
_cell_angle_beta   17.12
_cell_angle_gamma   17.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrW2Br
_chemical_formula_sum   'Sr1 W2 Br1'
_cell_volume   81.31
_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
  Sr  Sr1  1  0.0  0.0  0.14  1.0
  W  W2  1  0.0  0.0  0.38  1.0
  W  W3  1  0.0  0.0  0.89  1.0
  Br  Br0  1  0.0  0.0  0.0  1.0

data_SrW2Br
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.28
_cell_length_b   3.05
_cell_length_c   10.24
_cell_angle_alpha   90.0
_cell_angle_beta   99.9
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrW2Br
_chemical_formula_sum   'Sr2 W4 Br2'
_cell_volume   162.62
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Sr  Sr0  2  0.0  0.0  0.86  1.0
  W  W1  2  0.0  0.0  0.11  1.0
  W  W2  2  0.0  0.0  0.62  1.0
  Br  Br3  2  0.0  0.0  0.0  1.0

Sr W W Br
SrW2Br is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrW2Br clusters. Sr(1) is bonded in a distorted single-bond geometry to one W(1) and one Br(1) atom. The Sr(1)-W(1) bond length is 2.52 Å. The Sr(1)-Br(1) bond length is 1.41 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded in a single-bond geometry to one Sr(1) atom. In the second W site, W(2) is bonded in a single-bond geometry to one Br(1) atom. The W(2)-Br(1) bond length is 1.11 Å. Br(1) is bonded in a linear geometry to one Sr(1) and one W(2) atom.