data_KW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.25
_cell_length_b   7.25
_cell_length_c   7.25
_cell_angle_alpha   139.13
_cell_angle_beta   139.13
_cell_angle_gamma   59.18
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KW2
_chemical_formula_sum   'K2 W4'
_cell_volume   161.34
_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
  K  K0  1  0.0  0.53  0.15  1.0
  K  K1  1  0.0  0.0  0.0  1.0
  W  W2  1  0.53  0.0  0.33  1.0
  W  W3  1  0.0  0.0  0.13  1.0
  W  W4  1  0.53  0.0  0.97  1.0
  W  W5  1  0.0  0.0  0.48  1.0

data_KW2
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.06
_cell_length_b   5.06
_cell_length_c   7.25
_cell_angle_alpha   110.44
_cell_angle_beta   110.44
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KW2
_chemical_formula_sum   'K2 W4'
_cell_volume   161.34
_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
  K  K0  1  0.0  0.0  0.0  1.0
  K  K1  1  0.62  0.15  0.62  1.0
  W  W2  1  0.13  0.13  0.13  1.0
  W  W3  1  0.33  0.8  0.8  1.0
  W  W4  1  0.48  0.48  0.48  1.0
  W  W5  1  0.97  0.44  0.44  1.0

K K W W W W
K K W W W W 0 5 o + o 1 3 o o o 1 2 o o o 2 3 o o o 2 5 + o o 2 4 o o - 3 4 - o - 3 5 o o o 4 5 o o o 4 5 + o + 
KWW1 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted single-bond geometry to one W(1), one W(3), and one W(4) atom. The K(1)-W(1) bond length is 3.16 Å. The K(1)-W(3) bond length is 3.16 Å. The K(1)-W(4) bond length is 2.24 Å. In the second K site, K(2) is bonded in a distorted single-bond geometry to one W(2) and two equivalent W(1) atoms. The K(2)-W(2) bond length is 0.91 Å. There is one shorter (2.57 Å) and one longer (3.20 Å) K(2)-W(1) bond length. There are four inequivalent W sites. In the first W site, W(1) is bonded in a 3-coordinate geometry to one K(1), two equivalent K(2), and one W(3) atom. The W(1)-W(3) bond length is 2.55 Å. In the second W site, W(2) is bonded in a single-bond geometry to one K(2) and one W(3) atom. The W(2)-W(3) bond length is 2.68 Å. In the third W site, W(3) is bonded in a 5-coordinate geometry to one K(1), one W(1), one W(2), and two equivalent W(4) atoms. There is one shorter (2.47 Å) and one longer (2.61 Å) W(3)-W(4) bond length. In the fourth W site, W(4) is bonded in a distorted single-bond geometry to one K(1) and two equivalent W(3) atoms.