data_K4PtW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.56
_cell_length_b   6.56
_cell_length_c   6.56
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K4PtW
_chemical_formula_sum   'K4 Pt1 W1'
_cell_volume   199.8
_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  K0  1  0.79  0.79  0.49  1.0
  K  K1  1  0.79  0.49  0.79  1.0
  K  K2  1  0.49  0.79  0.79  1.0
  K  K3  1  0.49  0.49  0.49  1.0
  Pt  Pt4  1  0.96  0.96  0.96  1.0
  W  W5  1  0.0  0.0  0.0  1.0

data_K4PtW
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.56
_cell_length_b   6.56
_cell_length_c   16.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   K4PtW
_chemical_formula_sum   'K12 Pt3 W3'
_cell_volume   599.39
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  9  0.2  0.1  0.31  1.0
  K  K1  3  0.0  0.0  0.51  1.0
  Pt  Pt2  3  0.0  0.0  0.04  1.0
  W  W3  3  0.0  0.0  0.0  1.0

K K K K Pt W
K4WPt crystallizes in the trigonal R3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 1-coordinate geometry to three equivalent K(2) and one W(1) atom. There is one shorter (3.41 Å) and two longer (3.99 Å) K(1)-K(2) bond lengths. The K(1)-W(1) bond length is 2.68 Å. In the second K site, K(2) is bonded in a 9-coordinate geometry to nine equivalent K(1) atoms. W(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Pt(1) atom. The W(1)-Pt(1) bond length is 0.64 Å. Pt(1) is bonded in a single-bond geometry to one W(1) atom.