data_NaP2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.43
_cell_length_b   4.43
_cell_length_c   4.43
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaP2W
_chemical_formula_sum   'Na1 P2 W1'
_cell_volume   61.62
_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
  Na  Na0  1  0.0  0.0  0.0  1.0
  P  P1  1  0.57  0.57  0.57  1.0
  P  P2  1  0.7  0.7  0.7  1.0
  W  W3  1  0.13  0.13  0.13  1.0

data_NaP2W
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.43
_cell_length_b   4.43
_cell_length_c   10.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   NaP2W
_chemical_formula_sum   'Na3 P6 W3'
_cell_volume   184.86
_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
  Na  Na0  3  0.0  0.0  0.0  1.0
  P  P1  3  0.0  0.0  0.3  1.0
  P  P2  3  0.0  0.0  0.43  1.0
  W  W3  3  0.0  0.0  0.87  1.0

Na P P W
Na P P W 0 3 o o o 1 2 o o o 
NaWP2 crystallizes in the trigonal R3m space group. Na(1) is bonded in a single-bond geometry to one W(1), three equivalent P(1), and four equivalent P(2) atoms. The Na(1)-W(1) bond length is 1.47 Å. All Na(1)-P(1) bond lengths are 2.78 Å. There are three shorter (2.59 Å) and one longer (3.23 Å) Na(1)-P(2) bond length. W(1) is bonded in a single-bond geometry to one Na(1), three equivalent P(1), and three equivalent P(2) atoms. All W(1)-P(1) bond lengths are 2.78 Å. All W(1)-P(2) bond lengths are 2.78 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 7-coordinate geometry to three equivalent Na(1), three equivalent W(1), and one P(2) atom. The P(1)-P(2) bond length is 1.47 Å. In the second P site, P(2) is bonded in a 8-coordinate geometry to four equivalent Na(1), three equivalent W(1), and one P(1) atom.