The compound described by Ca3W crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded in a distorted see-saw-like geometry to four equivalent W(1) atoms. W(1) is bonded to twelve equivalent Ca(1) atoms to form a mixture of face and corner-sharing WCa12 cuboctahedra. is represented by the CIF file [CIF]
data_Ca3W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.081
_cell_length_b   7.081
_cell_length_c   5.423
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   235.499
_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
  Ca  Ca0  1  0.179  0.359  0.250  1.0
  Ca  Ca1  1  0.641  0.821  0.250  1.0
  Ca  Ca2  1  0.179  0.821  0.250  1.0
  Ca  Ca3  1  0.821  0.641  0.750  1.0
  Ca  Ca4  1  0.359  0.179  0.750  1.0
  Ca  Ca5  1  0.821  0.179  0.750  1.0
  W  W6  1  0.333  0.667  0.750  1.0
  W  W7  1  0.667  0.333  0.250  1.0
[/CIF]
.
The compound described by Ca3W crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded in a distorted see-saw-like geometry to four equivalent W(1) atoms. W(1) is bonded to twelve equivalent Ca(1) atoms to form a mixture of face and corner-sharing WCa12 cuboctahedra. is represented by the CIF file [CIF]
data_Ca3W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.081
_cell_length_b   7.081
_cell_length_c   5.423
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   235.499
_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
  Ca  Ca0  1  0.179  0.359  0.250  1.0
  Ca  Ca1  1  0.641  0.821  0.250  1.0
  Ca  Ca2  1  0.179  0.821  0.250  1.0
  Ca  Ca3  1  0.821  0.641  0.750  1.0
  Ca  Ca4  1  0.359  0.179  0.750  1.0
  Ca  Ca5  1  0.821  0.179  0.750  1.0
  W  W6  1  0.333  0.667  0.750  1.0
  W  W7  1  0.667  0.333  0.250  1.0
[/CIF]
.