data_KW2Br
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.25
_cell_length_b   4.25
_cell_length_c   3.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KW2Br
_chemical_formula_sum   'K1 W2 Br1'
_cell_volume   71.12
_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
  K  K1  1  0.0  0.0  0.0  1.0
  W  W2  1  0.0  0.12  0.97  1.0
  W  W3  1  0.12  0.0  0.97  1.0
  Br  Br0  1  0.12  0.12  0.0  1.0

data_KW2Br
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.01
_cell_length_b   6.01
_cell_length_c   3.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KW2Br
_chemical_formula_sum   'K2 W4 Br2'
_cell_volume   142.24
_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
  K  K0  2  0.0  0.0  0.0  1.0
  W  W1  4  0.06  0.06  0.97  1.0
  Br  Br2  2  0.12  0.0  0.0  1.0

K W W Br
KW2Br is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two KW2Br clusters. K(1) is bonded in an L-shaped geometry to two equivalent W(1) atoms. Both K(1)-W(1) bond lengths are 0.54 Å. W(1) is bonded in an L-shaped geometry to one K(1) and one Br(1) atom. The W(1)-Br(1) bond length is 0.54 Å. Br(1) is bonded in an L-shaped geometry to two equivalent W(1) atoms.