The structure described by W crystallizes in the monoclinic P2/m space group. There are ten inequivalent W sites. In the first W site, W(1) is bonded to one W(2), one W(3), one W(5), two equivalent W(4), and three equivalent W(1) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid,  a cornercorner with one W(9)W8 hexagonal bipyramid, corners with two equivalent W(1)W8 hexagonal bipyramids,  a cornercorner with one W(7)W7 hexagonal pyramid,  a cornercorner with one W(8)W7 hexagonal pyramid,  an edgeedge with one W(6)W8 hexagonal bipyramid, edges with three equivalent W(1)W8 hexagonal bipyramids, edges with four equivalent W(2)W8 hexagonal bipyramids, edges with four equivalent W(3)W8 hexagonal bipyramids, edges with four equivalent W(5)W8 hexagonal bipyramids, edges with six equivalent W(4)W8 hexagonal bipyramids,  an edgeedge with one W(7)W7 hexagonal pyramid, and  an edgeedge with one W(8)W7 hexagonal pyramid. In the second W site, W(2) is bonded to one W(1), one W(5), one W(6), two equivalent W(3), and three equivalent W(2) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid, corners with two equivalent W(2)W8 hexagonal bipyramids,  a cornercorner with one W(10)W7 hexagonal pyramid,  a cornercorner with one W(7)W7 hexagonal pyramid,  a cornercorner with one W(8)W7 hexagonal pyramid,  an edgeedge with one W(9)W8 hexagonal bipyramid, edges with two equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(2)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with four equivalent W(1)W8 hexagonal bipyramids, edges with four equivalent W(6)W8 hexagonal bipyramids, edges with six equivalent W(3)W8 hexagonal bipyramids, and  an edgeedge with one W(7)W7 hexagonal pyramid. In the third W site, W(3) is bonded to one W(1), one W(4), one W(6), one W(7), two equivalent W(2), and two equivalent W(3) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid,  a cornercorner with one W(9)W8 hexagonal bipyramid, corners with two equivalent W(3)W8 hexagonal bipyramids,  an edgeedge with one W(3)W8 hexagonal bipyramid, edges with two equivalent W(5)W8 hexagonal bipyramids, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with four equivalent W(1)W8 hexagonal bipyramids, edges with six equivalent W(2)W8 hexagonal bipyramids,  an edgeedge with one W(10)W7 hexagonal pyramid,  an edgeedge with one W(8)W7 hexagonal pyramid, and edges with three equivalent W(7)W7 hexagonal pyramids. In the fourth W site, W(4) is bonded to one W(3), one W(5), one W(7), one W(8), two equivalent W(1), and two equivalent W(4) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid, corners with two equivalent W(4)W8 hexagonal bipyramids, corners with two equivalent W(10)W7 hexagonal pyramids,  an edgeedge with one W(4)W8 hexagonal bipyramid,  an edgeedge with one W(6)W8 hexagonal bipyramid,  an edgeedge with one W(9)W8 hexagonal bipyramid, edges with two equivalent W(2)W8 hexagonal bipyramids, edges with three equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with six equivalent W(1)W8 hexagonal bipyramids, edges with three equivalent W(7)W7 hexagonal pyramids, and edges with three equivalent W(8)W7 hexagonal pyramids. In the fifth W site, W(5) is bonded to one W(1), one W(2), one W(4), one W(6), one W(8), one W(9), and two equivalent W(5) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid,  a cornercorner with one W(9)W8 hexagonal bipyramid, corners with two equivalent W(5)W8 hexagonal bipyramids,  a cornercorner with one W(7)W7 hexagonal pyramid, edges with two equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(2)W8 hexagonal bipyramids, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with three equivalent W(9)W8 hexagonal bipyramids, edges with four equivalent W(1)W8 hexagonal bipyramids,  an edgeedge with one W(7)W7 hexagonal pyramid, edges with two equivalent W(10)W7 hexagonal pyramids, and edges with three equivalent W(8)W7 hexagonal pyramids. In the sixth W site, W(6) is bonded to one W(10), one W(2), one W(3), one W(5), one W(7), one W(9), and two equivalent W(6) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid, corners with two equivalent W(6)W8 hexagonal bipyramids,  a cornercorner with one W(10)W7 hexagonal pyramid, corners with two equivalent W(8)W7 hexagonal pyramids,  an edgeedge with one W(1)W8 hexagonal bipyramid,  an edgeedge with one W(4)W8 hexagonal bipyramid, edges with three equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with four equivalent W(2)W8 hexagonal bipyramids, edges with four equivalent W(9)W8 hexagonal bipyramids,  an edgeedge with one W(8)W7 hexagonal pyramid, edges with three equivalent W(10)W7 hexagonal pyramids, and edges with three equivalent W(7)W7 hexagonal pyramids. In the seventh W site, W(7) is bonded to one W(10), one W(3), one W(4), one W(6), one W(8), and two equivalent W(7) atoms to form distorted WW7 hexagonal pyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid, corners with two equivalent W(9)W8 hexagonal bipyramids, corners with two equivalent W(10)W7 hexagonal pyramids, corners with two equivalent W(7)W7 hexagonal pyramids, corners with two equivalent W(8)W7 hexagonal pyramids,  an edgeedge with one W(1)W8 hexagonal bipyramid,  an edgeedge with one W(2)W8 hexagonal bipyramid,  an edgeedge with one W(5)W8 hexagonal bipyramid,  an edgeedge with one W(9)W8 hexagonal bipyramid, edges with three equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with two equivalent W(10)W7 hexagonal pyramids, and edges with two equivalent W(8)W7 hexagonal pyramids. In the eighth W site, W(8) is bonded to one W(10), one W(4), one W(5), one W(7), one W(9), and two equivalent W(8) atoms to form distorted WW7 hexagonal pyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(2)W8 hexagonal bipyramid, corners with two equivalent W(6)W8 hexagonal bipyramids, corners with two equivalent W(7)W7 hexagonal pyramids, corners with two equivalent W(8)W7 hexagonal pyramids, corners with three equivalent W(10)W7 hexagonal pyramids,  an edgeedge with one W(1)W8 hexagonal bipyramid,  an edgeedge with one W(3)W8 hexagonal bipyramid,  an edgeedge with one W(6)W8 hexagonal bipyramid, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with four equivalent W(9)W8 hexagonal bipyramids, edges with two equivalent W(10)W7 hexagonal pyramids, and edges with two equivalent W(7)W7 hexagonal pyramids. In the ninth W site, W(9) is bonded to one W(5), one W(6), one W(8), two equivalent W(10), and three equivalent W(9) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid, corners with two equivalent W(9)W8 hexagonal bipyramids, corners with two equivalent W(7)W7 hexagonal pyramids,  an edgeedge with one W(2)W8 hexagonal bipyramid,  an edgeedge with one W(4)W8 hexagonal bipyramid, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with three equivalent W(9)W8 hexagonal bipyramids, edges with four equivalent W(6)W8 hexagonal bipyramids,  an edgeedge with one W(7)W7 hexagonal pyramid, edges with four equivalent W(8)W7 hexagonal pyramids, and edges with six equivalent W(10)W7 hexagonal pyramids. In the tenth W site, W(10) is bonded to one W(6), one W(7), one W(8), two equivalent W(10), and two equivalent W(9) atoms to form distorted WW7 hexagonal pyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid, corners with two equivalent W(4)W8 hexagonal bipyramids, corners with two equivalent W(10)W7 hexagonal pyramids, corners with two equivalent W(7)W7 hexagonal pyramids, corners with three equivalent W(8)W7 hexagonal pyramids,  an edgeedge with one W(3)W8 hexagonal bipyramid, edges with two equivalent W(5)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with six equivalent W(9)W8 hexagonal bipyramids,  an edgeedge with one W(10)W7 hexagonal pyramid, edges with two equivalent W(7)W7 hexagonal pyramids, and edges with two equivalent W(8)W7 hexagonal pyramids. is represented by the CIF file [CIF]
data_W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.239
_cell_length_b   2.600
_cell_length_c   14.813
_cell_angle_alpha   90.000
_cell_angle_beta   99.955
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   350.471
_cell_formula_units_Z   20
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
  W  W0  1  0.356  0.500  0.977  1.0
  W  W1  1  0.644  0.500  0.023  1.0
  W  W2  1  0.067  0.500  0.928  1.0
  W  W3  1  0.933  0.500  0.072  1.0
  W  W4  1  0.776  0.500  0.877  1.0
  W  W5  1  0.224  0.500  0.123  1.0
  W  W6  1  0.487  0.500  0.828  1.0
  W  W7  1  0.513  0.500  0.172  1.0
  W  W8  1  0.200  0.500  0.782  1.0
  W  W9  1  0.800  0.500  0.218  1.0
  W  W10  1  0.909  0.500  0.735  1.0
  W  W11  1  0.091  0.500  0.265  1.0
  W  W12  1  0.618  0.500  0.683  1.0
  W  W13  1  0.382  0.500  0.317  1.0
  W  W14  1  0.331  0.500  0.634  1.0
  W  W15  1  0.669  0.500  0.366  1.0
  W  W16  1  0.040  0.500  0.590  1.0
  W  W17  1  0.960  0.500  0.410  1.0
  W  W18  1  0.753  0.500  0.543  1.0
  W  W19  1  0.247  0.500  0.457  1.0
[/CIF]
.
The structure described by W crystallizes in the monoclinic P2/m space group. There are ten inequivalent W sites. In the first W site, W(1) is bonded to one W(2), one W(3), one W(5), two equivalent W(4), and three equivalent W(1) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid,  a cornercorner with one W(9)W8 hexagonal bipyramid, corners with two equivalent W(1)W8 hexagonal bipyramids,  a cornercorner with one W(7)W7 hexagonal pyramid,  a cornercorner with one W(8)W7 hexagonal pyramid,  an edgeedge with one W(6)W8 hexagonal bipyramid, edges with three equivalent W(1)W8 hexagonal bipyramids, edges with four equivalent W(2)W8 hexagonal bipyramids, edges with four equivalent W(3)W8 hexagonal bipyramids, edges with four equivalent W(5)W8 hexagonal bipyramids, edges with six equivalent W(4)W8 hexagonal bipyramids,  an edgeedge with one W(7)W7 hexagonal pyramid, and  an edgeedge with one W(8)W7 hexagonal pyramid. In the second W site, W(2) is bonded to one W(1), one W(5), one W(6), two equivalent W(3), and three equivalent W(2) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid, corners with two equivalent W(2)W8 hexagonal bipyramids,  a cornercorner with one W(10)W7 hexagonal pyramid,  a cornercorner with one W(7)W7 hexagonal pyramid,  a cornercorner with one W(8)W7 hexagonal pyramid,  an edgeedge with one W(9)W8 hexagonal bipyramid, edges with two equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(2)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with four equivalent W(1)W8 hexagonal bipyramids, edges with four equivalent W(6)W8 hexagonal bipyramids, edges with six equivalent W(3)W8 hexagonal bipyramids, and  an edgeedge with one W(7)W7 hexagonal pyramid. In the third W site, W(3) is bonded to one W(1), one W(4), one W(6), one W(7), two equivalent W(2), and two equivalent W(3) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid,  a cornercorner with one W(9)W8 hexagonal bipyramid, corners with two equivalent W(3)W8 hexagonal bipyramids,  an edgeedge with one W(3)W8 hexagonal bipyramid, edges with two equivalent W(5)W8 hexagonal bipyramids, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with four equivalent W(1)W8 hexagonal bipyramids, edges with six equivalent W(2)W8 hexagonal bipyramids,  an edgeedge with one W(10)W7 hexagonal pyramid,  an edgeedge with one W(8)W7 hexagonal pyramid, and edges with three equivalent W(7)W7 hexagonal pyramids. In the fourth W site, W(4) is bonded to one W(3), one W(5), one W(7), one W(8), two equivalent W(1), and two equivalent W(4) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid, corners with two equivalent W(4)W8 hexagonal bipyramids, corners with two equivalent W(10)W7 hexagonal pyramids,  an edgeedge with one W(4)W8 hexagonal bipyramid,  an edgeedge with one W(6)W8 hexagonal bipyramid,  an edgeedge with one W(9)W8 hexagonal bipyramid, edges with two equivalent W(2)W8 hexagonal bipyramids, edges with three equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with six equivalent W(1)W8 hexagonal bipyramids, edges with three equivalent W(7)W7 hexagonal pyramids, and edges with three equivalent W(8)W7 hexagonal pyramids. In the fifth W site, W(5) is bonded to one W(1), one W(2), one W(4), one W(6), one W(8), one W(9), and two equivalent W(5) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid,  a cornercorner with one W(9)W8 hexagonal bipyramid, corners with two equivalent W(5)W8 hexagonal bipyramids,  a cornercorner with one W(7)W7 hexagonal pyramid, edges with two equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(2)W8 hexagonal bipyramids, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with three equivalent W(9)W8 hexagonal bipyramids, edges with four equivalent W(1)W8 hexagonal bipyramids,  an edgeedge with one W(7)W7 hexagonal pyramid, edges with two equivalent W(10)W7 hexagonal pyramids, and edges with three equivalent W(8)W7 hexagonal pyramids. In the sixth W site, W(6) is bonded to one W(10), one W(2), one W(3), one W(5), one W(7), one W(9), and two equivalent W(6) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(4)W8 hexagonal bipyramid, corners with two equivalent W(6)W8 hexagonal bipyramids,  a cornercorner with one W(10)W7 hexagonal pyramid, corners with two equivalent W(8)W7 hexagonal pyramids,  an edgeedge with one W(1)W8 hexagonal bipyramid,  an edgeedge with one W(4)W8 hexagonal bipyramid, edges with three equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with four equivalent W(2)W8 hexagonal bipyramids, edges with four equivalent W(9)W8 hexagonal bipyramids,  an edgeedge with one W(8)W7 hexagonal pyramid, edges with three equivalent W(10)W7 hexagonal pyramids, and edges with three equivalent W(7)W7 hexagonal pyramids. In the seventh W site, W(7) is bonded to one W(10), one W(3), one W(4), one W(6), one W(8), and two equivalent W(7) atoms to form distorted WW7 hexagonal pyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid, corners with two equivalent W(9)W8 hexagonal bipyramids, corners with two equivalent W(10)W7 hexagonal pyramids, corners with two equivalent W(7)W7 hexagonal pyramids, corners with two equivalent W(8)W7 hexagonal pyramids,  an edgeedge with one W(1)W8 hexagonal bipyramid,  an edgeedge with one W(2)W8 hexagonal bipyramid,  an edgeedge with one W(5)W8 hexagonal bipyramid,  an edgeedge with one W(9)W8 hexagonal bipyramid, edges with three equivalent W(3)W8 hexagonal bipyramids, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with two equivalent W(10)W7 hexagonal pyramids, and edges with two equivalent W(8)W7 hexagonal pyramids. In the eighth W site, W(8) is bonded to one W(10), one W(4), one W(5), one W(7), one W(9), and two equivalent W(8) atoms to form distorted WW7 hexagonal pyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(2)W8 hexagonal bipyramid, corners with two equivalent W(6)W8 hexagonal bipyramids, corners with two equivalent W(7)W7 hexagonal pyramids, corners with two equivalent W(8)W7 hexagonal pyramids, corners with three equivalent W(10)W7 hexagonal pyramids,  an edgeedge with one W(1)W8 hexagonal bipyramid,  an edgeedge with one W(3)W8 hexagonal bipyramid,  an edgeedge with one W(6)W8 hexagonal bipyramid, edges with three equivalent W(4)W8 hexagonal bipyramids, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with four equivalent W(9)W8 hexagonal bipyramids, edges with two equivalent W(10)W7 hexagonal pyramids, and edges with two equivalent W(7)W7 hexagonal pyramids. In the ninth W site, W(9) is bonded to one W(5), one W(6), one W(8), two equivalent W(10), and three equivalent W(9) atoms to form distorted WW8 hexagonal bipyramids that share  a cornercorner with one W(1)W8 hexagonal bipyramid,  a cornercorner with one W(3)W8 hexagonal bipyramid,  a cornercorner with one W(5)W8 hexagonal bipyramid, corners with two equivalent W(9)W8 hexagonal bipyramids, corners with two equivalent W(7)W7 hexagonal pyramids,  an edgeedge with one W(2)W8 hexagonal bipyramid,  an edgeedge with one W(4)W8 hexagonal bipyramid, edges with three equivalent W(5)W8 hexagonal bipyramids, edges with three equivalent W(9)W8 hexagonal bipyramids, edges with four equivalent W(6)W8 hexagonal bipyramids,  an edgeedge with one W(7)W7 hexagonal pyramid, edges with four equivalent W(8)W7 hexagonal pyramids, and edges with six equivalent W(10)W7 hexagonal pyramids. In the tenth W site, W(10) is bonded to one W(6), one W(7), one W(8), two equivalent W(10), and two equivalent W(9) atoms to form distorted WW7 hexagonal pyramids that share  a cornercorner with one W(2)W8 hexagonal bipyramid,  a cornercorner with one W(6)W8 hexagonal bipyramid, corners with two equivalent W(4)W8 hexagonal bipyramids, corners with two equivalent W(10)W7 hexagonal pyramids, corners with two equivalent W(7)W7 hexagonal pyramids, corners with three equivalent W(8)W7 hexagonal pyramids,  an edgeedge with one W(3)W8 hexagonal bipyramid, edges with two equivalent W(5)W8 hexagonal bipyramids, edges with three equivalent W(6)W8 hexagonal bipyramids, edges with six equivalent W(9)W8 hexagonal bipyramids,  an edgeedge with one W(10)W7 hexagonal pyramid, edges with two equivalent W(7)W7 hexagonal pyramids, and edges with two equivalent W(8)W7 hexagonal pyramids. is represented by the CIF file [CIF]
data_W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.239
_cell_length_b   2.600
_cell_length_c   14.813
_cell_angle_alpha   90.000
_cell_angle_beta   99.955
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   350.471
_cell_formula_units_Z   20
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
  W  W0  1  0.356  0.500  0.977  1.0
  W  W1  1  0.644  0.500  0.023  1.0
  W  W2  1  0.067  0.500  0.928  1.0
  W  W3  1  0.933  0.500  0.072  1.0
  W  W4  1  0.776  0.500  0.877  1.0
  W  W5  1  0.224  0.500  0.123  1.0
  W  W6  1  0.487  0.500  0.828  1.0
  W  W7  1  0.513  0.500  0.172  1.0
  W  W8  1  0.200  0.500  0.782  1.0
  W  W9  1  0.800  0.500  0.218  1.0
  W  W10  1  0.909  0.500  0.735  1.0
  W  W11  1  0.091  0.500  0.265  1.0
  W  W12  1  0.618  0.500  0.683  1.0
  W  W13  1  0.382  0.500  0.317  1.0
  W  W14  1  0.331  0.500  0.634  1.0
  W  W15  1  0.669  0.500  0.366  1.0
  W  W16  1  0.040  0.500  0.590  1.0
  W  W17  1  0.960  0.500  0.410  1.0
  W  W18  1  0.753  0.500  0.543  1.0
  W  W19  1  0.247  0.500  0.457  1.0
[/CIF]
.