The material structure described by Eu3W is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 4-coordinate geometry to four equivalent Eu(2) and four equivalent W(1) atoms. In the second Eu site, Eu(2) is bonded to eight equivalent Eu(1) and four equivalent W(1) atoms to form EuEu8W4 cuboctahedra that share corners with four equivalent Eu(2)Eu8W4 cuboctahedra, corners with eight equivalent W(1)Eu12 cuboctahedra, edges with eight equivalent Eu(2)Eu8W4 cuboctahedra, faces with four equivalent Eu(2)Eu8W4 cuboctahedra, and faces with six equivalent W(1)Eu12 cuboctahedra. W(1) is bonded to four equivalent Eu(2) and eight equivalent Eu(1) atoms to form WEu12 cuboctahedra that share corners with four equivalent W(1)Eu12 cuboctahedra, corners with eight equivalent Eu(2)Eu8W4 cuboctahedra, edges with eight equivalent W(1)Eu12 cuboctahedra, faces with four equivalent W(1)Eu12 cuboctahedra, and faces with six equivalent Eu(2)Eu8W4 cuboctahedra. is represented by the CIF card [CIF]
data_Eu3W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.792
_cell_length_b   5.792
_cell_length_c   5.792
_cell_angle_alpha   128.391
_cell_angle_beta   128.391
_cell_angle_gamma   75.993
_symmetry_Int_Tables_number   1
_cell_volume   116.042
_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
  Eu  Eu0  1  0.750  0.250  0.500  1.0
  Eu  Eu1  1  0.250  0.750  0.500  1.0
  Eu  Eu2  1  0.500  0.500  0.000  1.0
  W  W3  1  0.000  0.000  0.000  1.0
[/CIF]
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The material structure described by Eu3W is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 4-coordinate geometry to four equivalent Eu(2) and four equivalent W(1) atoms. In the second Eu site, Eu(2) is bonded to eight equivalent Eu(1) and four equivalent W(1) atoms to form EuEu8W4 cuboctahedra that share corners with four equivalent Eu(2)Eu8W4 cuboctahedra, corners with eight equivalent W(1)Eu12 cuboctahedra, edges with eight equivalent Eu(2)Eu8W4 cuboctahedra, faces with four equivalent Eu(2)Eu8W4 cuboctahedra, and faces with six equivalent W(1)Eu12 cuboctahedra. W(1) is bonded to four equivalent Eu(2) and eight equivalent Eu(1) atoms to form WEu12 cuboctahedra that share corners with four equivalent W(1)Eu12 cuboctahedra, corners with eight equivalent Eu(2)Eu8W4 cuboctahedra, edges with eight equivalent W(1)Eu12 cuboctahedra, faces with four equivalent W(1)Eu12 cuboctahedra, and faces with six equivalent Eu(2)Eu8W4 cuboctahedra. is represented by the CIF card [CIF]
data_Eu3W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.792
_cell_length_b   5.792
_cell_length_c   5.792
_cell_angle_alpha   128.391
_cell_angle_beta   128.391
_cell_angle_gamma   75.993
_symmetry_Int_Tables_number   1
_cell_volume   116.042
_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
  Eu  Eu0  1  0.750  0.250  0.500  1.0
  Eu  Eu1  1  0.250  0.750  0.500  1.0
  Eu  Eu2  1  0.500  0.500  0.000  1.0
  W  W3  1  0.000  0.000  0.000  1.0
[/CIF]
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