The material described by W3Si2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. In the second W site, W(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent W(1), six equivalent W(2), and one Si(1) atom. is represented by the CIF card [CIF]
data_Si2W3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.616
_cell_length_b   6.616
_cell_length_c   3.344
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   146.343
_cell_formula_units_Z   2
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
  Si  Si0  1  0.134  0.634  0.000  1.0
  Si  Si1  1  0.866  0.366  0.000  1.0
  Si  Si2  1  0.634  0.866  0.000  1.0
  Si  Si3  1  0.366  0.134  0.000  1.0
  W  W4  1  0.500  0.500  0.000  1.0
  W  W5  1  0.000  0.000  0.000  1.0
  W  W6  1  0.660  0.160  0.500  1.0
  W  W7  1  0.340  0.840  0.500  1.0
  W  W8  1  0.160  0.340  0.500  1.0
  W  W9  1  0.840  0.660  0.500  1.0
[/CIF]
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The material described by W3Si2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. In the second W site, W(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent W(1), six equivalent W(2), and one Si(1) atom. is represented by the CIF card [CIF]
data_Si2W3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.616
_cell_length_b   6.616
_cell_length_c   3.344
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   146.343
_cell_formula_units_Z   2
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
  Si  Si0  1  0.134  0.634  0.000  1.0
  Si  Si1  1  0.866  0.366  0.000  1.0
  Si  Si2  1  0.634  0.866  0.000  1.0
  Si  Si3  1  0.366  0.134  0.000  1.0
  W  W4  1  0.500  0.500  0.000  1.0
  W  W5  1  0.000  0.000  0.000  1.0
  W  W6  1  0.660  0.160  0.500  1.0
  W  W7  1  0.340  0.840  0.500  1.0
  W  W8  1  0.160  0.340  0.500  1.0
  W  W9  1  0.840  0.660  0.500  1.0
[/CIF]
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