The crystal structure described by K6Na2Pt(WO6)6 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 8-coordinate geometry to one O(2), one O(5), two equivalent O(4), and four equivalent O(3) atoms. Na(1) is bonded in a 3-coordinate geometry to three equivalent O(5) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted WO6 octahedra that share  an edgeedge with one Pt(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. Pt(1) is bonded to six equivalent O(2) atoms to form PtO6 octahedra that share edges with six equivalent W(1)O6 octahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted water-like geometry to two equivalent K(1) and two equivalent O(5) atoms. In the second O site, O(5) is bonded in a see-saw-like geometry to one K(1), one Na(1), and two equivalent O(4) atoms. In the third O site, O(1) is bonded in a water-like geometry to two equivalent W(1) atoms. In the fourth O site, O(2) is bonded to one K(1), two equivalent W(1), and one Pt(1) atom to form a mixture of distorted corner and edge-sharing OKPtW2 trigonal pyramids. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1) and one W(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K6Na2Pt(WO6)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.597
_cell_length_b   9.597
_cell_length_c   9.597
_cell_angle_alpha   81.536
_cell_angle_beta   81.536
_cell_angle_gamma   81.536
_symmetry_Int_Tables_number   1
_cell_volume   857.600
_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  0.325  0.877  0.325  1.0
  K  K1  1  0.877  0.325  0.325  1.0
  K  K2  1  0.325  0.325  0.877  1.0
  K  K3  1  0.675  0.123  0.675  1.0
  K  K4  1  0.123  0.675  0.675  1.0
  K  K5  1  0.675  0.675  0.123  1.0
  Na  Na6  1  0.602  0.602  0.602  1.0
  Na  Na7  1  0.398  0.398  0.398  1.0
  Pt  Pt8  1  0.000  0.000  0.000  1.0
  W  W9  1  0.261  0.000  0.739  1.0
  W  W10  1  0.739  0.000  0.261  1.0
  W  W11  1  0.000  0.739  0.261  1.0
  W  W12  1  0.000  0.261  0.739  1.0
  W  W13  1  0.739  0.261  0.000  1.0
  W  W14  1  0.261  0.739  0.000  1.0
  O  O15  1  0.902  0.357  0.902  1.0
  O  O16  1  0.357  0.902  0.902  1.0
  O  O17  1  0.902  0.902  0.357  1.0
  O  O18  1  0.098  0.643  0.098  1.0
  O  O19  1  0.643  0.098  0.098  1.0
  O  O20  1  0.098  0.098  0.643  1.0
  O  O21  1  0.135  0.888  0.135  1.0
  O  O22  1  0.888  0.135  0.135  1.0
  O  O23  1  0.135  0.135  0.888  1.0
  O  O24  1  0.865  0.112  0.865  1.0
  O  O25  1  0.112  0.865  0.865  1.0
  O  O26  1  0.865  0.865  0.112  1.0
  O  O27  1  0.685  0.385  0.130  1.0
  O  O28  1  0.130  0.385  0.685  1.0
  O  O29  1  0.385  0.130  0.685  1.0
  O  O30  1  0.385  0.685  0.130  1.0
  O  O31  1  0.130  0.685  0.385  1.0
  O  O32  1  0.685  0.130  0.385  1.0
  O  O33  1  0.315  0.615  0.870  1.0
  O  O34  1  0.870  0.615  0.315  1.0
  O  O35  1  0.615  0.870  0.315  1.0
  O  O36  1  0.615  0.315  0.870  1.0
  O  O37  1  0.870  0.315  0.615  1.0
  O  O38  1  0.315  0.870  0.615  1.0
  O  O39  1  0.804  0.619  0.804  1.0
  O  O40  1  0.619  0.804  0.804  1.0
  O  O41  1  0.804  0.804  0.619  1.0
  O  O42  1  0.196  0.381  0.196  1.0
  O  O43  1  0.381  0.196  0.196  1.0
  O  O44  1  0.196  0.196  0.381  1.0
  O  O45  1  0.650  0.832  0.650  1.0
  O  O46  1  0.832  0.650  0.650  1.0
  O  O47  1  0.650  0.650  0.832  1.0
  O  O48  1  0.350  0.168  0.350  1.0
  O  O49  1  0.168  0.350  0.350  1.0
  O  O50  1  0.350  0.350  0.168  1.0
[/CIF]
.
The crystal structure described by K6Na2Pt(WO6)6 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 8-coordinate geometry to one O(2), one O(5), two equivalent O(4), and four equivalent O(3) atoms. Na(1) is bonded in a 3-coordinate geometry to three equivalent O(5) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted WO6 octahedra that share  an edgeedge with one Pt(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. Pt(1) is bonded to six equivalent O(2) atoms to form PtO6 octahedra that share edges with six equivalent W(1)O6 octahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted water-like geometry to two equivalent K(1) and two equivalent O(5) atoms. In the second O site, O(5) is bonded in a see-saw-like geometry to one K(1), one Na(1), and two equivalent O(4) atoms. In the third O site, O(1) is bonded in a water-like geometry to two equivalent W(1) atoms. In the fourth O site, O(2) is bonded to one K(1), two equivalent W(1), and one Pt(1) atom to form a mixture of distorted corner and edge-sharing OKPtW2 trigonal pyramids. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(1) and one W(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K6Na2Pt(WO6)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.597
_cell_length_b   9.597
_cell_length_c   9.597
_cell_angle_alpha   81.536
_cell_angle_beta   81.536
_cell_angle_gamma   81.536
_symmetry_Int_Tables_number   1
_cell_volume   857.600
_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  0.325  0.877  0.325  1.0
  K  K1  1  0.877  0.325  0.325  1.0
  K  K2  1  0.325  0.325  0.877  1.0
  K  K3  1  0.675  0.123  0.675  1.0
  K  K4  1  0.123  0.675  0.675  1.0
  K  K5  1  0.675  0.675  0.123  1.0
  Na  Na6  1  0.602  0.602  0.602  1.0
  Na  Na7  1  0.398  0.398  0.398  1.0
  Pt  Pt8  1  0.000  0.000  0.000  1.0
  W  W9  1  0.261  0.000  0.739  1.0
  W  W10  1  0.739  0.000  0.261  1.0
  W  W11  1  0.000  0.739  0.261  1.0
  W  W12  1  0.000  0.261  0.739  1.0
  W  W13  1  0.739  0.261  0.000  1.0
  W  W14  1  0.261  0.739  0.000  1.0
  O  O15  1  0.902  0.357  0.902  1.0
  O  O16  1  0.357  0.902  0.902  1.0
  O  O17  1  0.902  0.902  0.357  1.0
  O  O18  1  0.098  0.643  0.098  1.0
  O  O19  1  0.643  0.098  0.098  1.0
  O  O20  1  0.098  0.098  0.643  1.0
  O  O21  1  0.135  0.888  0.135  1.0
  O  O22  1  0.888  0.135  0.135  1.0
  O  O23  1  0.135  0.135  0.888  1.0
  O  O24  1  0.865  0.112  0.865  1.0
  O  O25  1  0.112  0.865  0.865  1.0
  O  O26  1  0.865  0.865  0.112  1.0
  O  O27  1  0.685  0.385  0.130  1.0
  O  O28  1  0.130  0.385  0.685  1.0
  O  O29  1  0.385  0.130  0.685  1.0
  O  O30  1  0.385  0.685  0.130  1.0
  O  O31  1  0.130  0.685  0.385  1.0
  O  O32  1  0.685  0.130  0.385  1.0
  O  O33  1  0.315  0.615  0.870  1.0
  O  O34  1  0.870  0.615  0.315  1.0
  O  O35  1  0.615  0.870  0.315  1.0
  O  O36  1  0.615  0.315  0.870  1.0
  O  O37  1  0.870  0.315  0.615  1.0
  O  O38  1  0.315  0.870  0.615  1.0
  O  O39  1  0.804  0.619  0.804  1.0
  O  O40  1  0.619  0.804  0.804  1.0
  O  O41  1  0.804  0.804  0.619  1.0
  O  O42  1  0.196  0.381  0.196  1.0
  O  O43  1  0.381  0.196  0.196  1.0
  O  O44  1  0.196  0.196  0.381  1.0
  O  O45  1  0.650  0.832  0.650  1.0
  O  O46  1  0.832  0.650  0.650  1.0
  O  O47  1  0.650  0.650  0.832  1.0
  O  O48  1  0.350  0.168  0.350  1.0
  O  O49  1  0.168  0.350  0.350  1.0
  O  O50  1  0.350  0.350  0.168  1.0
[/CIF]
.