The compound described by SnP6(WO8)3 crystallizes in the trigonal R3 space group. There are three inequivalent W sites. In the first W site, W(1) is bonded to three equivalent O(4) and three equivalent O(8) atoms to form WO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the second W site, W(2) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form WO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the third W site, W(3) is bonded to three equivalent O(1) and three equivalent O(7) atoms to form WO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. Sn(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form SnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 24-33°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 22-37°. There are eight inequivalent O sites. In the first O site, O(2) is bonded in a bent 150 degrees geometry to one W(2) and one P(1) atom. In the second O site, O(3) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the third O site, O(4) is bonded in a bent 150 degrees geometry to one W(1) and one P(1) atom. In the fourth O site, O(5) is bonded in a bent 150 degrees geometry to one W(2) and one P(2) atom. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the sixth O site, O(7) is bonded in a bent 150 degrees geometry to one W(3) and one P(2) atom. In the seventh O site, O(8) is bonded in a bent 150 degrees geometry to one W(1) and one P(2) atom. In the eighth O site, O(1) is bonded in a bent 150 degrees geometry to one W(3) and one P(1) atom. is represented by the CIF file [CIF]
data_SnP6(WO8)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.828
_cell_length_b   8.828
_cell_length_c   8.828
_cell_angle_alpha   60.204
_cell_angle_beta   60.204
_cell_angle_gamma   60.204
_symmetry_Int_Tables_number   1
_cell_volume   488.709
_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
  Sn  Sn0  1  0.139  0.139  0.139  1.0
  P  P1  1  0.538  0.962  0.249  1.0
  P  P2  1  0.249  0.538  0.962  1.0
  P  P3  1  0.962  0.249  0.538  1.0
  P  P4  1  0.037  0.752  0.462  1.0
  P  P5  1  0.752  0.462  0.037  1.0
  P  P6  1  0.462  0.037  0.752  1.0
  W  W7  1  0.641  0.641  0.641  1.0
  W  W8  1  0.860  0.860  0.860  1.0
  W  W9  1  0.361  0.361  0.361  1.0
  O  O10  1  0.290  0.509  0.125  1.0
  O  O11  1  0.125  0.290  0.509  1.0
  O  O12  1  0.509  0.125  0.290  1.0
  O  O13  1  0.720  0.937  0.083  1.0
  O  O14  1  0.376  0.987  0.208  1.0
  O  O15  1  0.567  0.780  0.414  1.0
  O  O16  1  0.083  0.720  0.937  1.0
  O  O17  1  0.414  0.567  0.780  1.0
  O  O18  1  0.002  0.799  0.627  1.0
  O  O19  1  0.780  0.414  0.567  1.0
  O  O20  1  0.048  0.917  0.283  1.0
  O  O21  1  0.799  0.627  0.002  1.0
  O  O22  1  0.208  0.376  0.987  1.0
  O  O23  1  0.937  0.083  0.720  1.0
  O  O24  1  0.216  0.587  0.446  1.0
  O  O25  1  0.987  0.208  0.376  1.0
  O  O26  1  0.587  0.446  0.216  1.0
  O  O27  1  0.917  0.283  0.048  1.0
  O  O28  1  0.446  0.216  0.587  1.0
  O  O29  1  0.627  0.002  0.799  1.0
  O  O30  1  0.283  0.048  0.917  1.0
  O  O31  1  0.500  0.874  0.701  1.0
  O  O32  1  0.874  0.701  0.500  1.0
  O  O33  1  0.701  0.500  0.874  1.0
[/CIF]
.
The compound described by SnP6(WO8)3 crystallizes in the trigonal R3 space group. There are three inequivalent W sites. In the first W site, W(1) is bonded to three equivalent O(4) and three equivalent O(8) atoms to form WO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the second W site, W(2) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form WO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the third W site, W(3) is bonded to three equivalent O(1) and three equivalent O(7) atoms to form WO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. Sn(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form SnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 24-33°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 22-37°. There are eight inequivalent O sites. In the first O site, O(2) is bonded in a bent 150 degrees geometry to one W(2) and one P(1) atom. In the second O site, O(3) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the third O site, O(4) is bonded in a bent 150 degrees geometry to one W(1) and one P(1) atom. In the fourth O site, O(5) is bonded in a bent 150 degrees geometry to one W(2) and one P(2) atom. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the sixth O site, O(7) is bonded in a bent 150 degrees geometry to one W(3) and one P(2) atom. In the seventh O site, O(8) is bonded in a bent 150 degrees geometry to one W(1) and one P(2) atom. In the eighth O site, O(1) is bonded in a bent 150 degrees geometry to one W(3) and one P(1) atom. is represented by the CIF file [CIF]
data_SnP6(WO8)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.828
_cell_length_b   8.828
_cell_length_c   8.828
_cell_angle_alpha   60.204
_cell_angle_beta   60.204
_cell_angle_gamma   60.204
_symmetry_Int_Tables_number   1
_cell_volume   488.709
_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
  Sn  Sn0  1  0.139  0.139  0.139  1.0
  P  P1  1  0.538  0.962  0.249  1.0
  P  P2  1  0.249  0.538  0.962  1.0
  P  P3  1  0.962  0.249  0.538  1.0
  P  P4  1  0.037  0.752  0.462  1.0
  P  P5  1  0.752  0.462  0.037  1.0
  P  P6  1  0.462  0.037  0.752  1.0
  W  W7  1  0.641  0.641  0.641  1.0
  W  W8  1  0.860  0.860  0.860  1.0
  W  W9  1  0.361  0.361  0.361  1.0
  O  O10  1  0.290  0.509  0.125  1.0
  O  O11  1  0.125  0.290  0.509  1.0
  O  O12  1  0.509  0.125  0.290  1.0
  O  O13  1  0.720  0.937  0.083  1.0
  O  O14  1  0.376  0.987  0.208  1.0
  O  O15  1  0.567  0.780  0.414  1.0
  O  O16  1  0.083  0.720  0.937  1.0
  O  O17  1  0.414  0.567  0.780  1.0
  O  O18  1  0.002  0.799  0.627  1.0
  O  O19  1  0.780  0.414  0.567  1.0
  O  O20  1  0.048  0.917  0.283  1.0
  O  O21  1  0.799  0.627  0.002  1.0
  O  O22  1  0.208  0.376  0.987  1.0
  O  O23  1  0.937  0.083  0.720  1.0
  O  O24  1  0.216  0.587  0.446  1.0
  O  O25  1  0.987  0.208  0.376  1.0
  O  O26  1  0.587  0.446  0.216  1.0
  O  O27  1  0.917  0.283  0.048  1.0
  O  O28  1  0.446  0.216  0.587  1.0
  O  O29  1  0.627  0.002  0.799  1.0
  O  O30  1  0.283  0.048  0.917  1.0
  O  O31  1  0.500  0.874  0.701  1.0
  O  O32  1  0.874  0.701  0.500  1.0
  O  O33  1  0.701  0.500  0.874  1.0
[/CIF]
.