The compound described by EuNb3 crystallizes in the hexagonal P6_3/mmc space group. Eu(1) is bonded to twelve equivalent Nb(1) atoms to form a mixture of face and corner-sharing EuNb12 cuboctahedra. Nb(1) is bonded in a 10-coordinate geometry to four equivalent Eu(1) and six equivalent Nb(1) atoms. is represented by the CIF file [CIF]
data_EuNb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.486
_cell_length_b   6.486
_cell_length_c   5.077
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   184.987
_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
  Eu  Eu0  1  0.333  0.667  0.750  1.0
  Eu  Eu1  1  0.667  0.333  0.250  1.0
  Nb  Nb2  1  0.142  0.284  0.250  1.0
  Nb  Nb3  1  0.716  0.858  0.250  1.0
  Nb  Nb4  1  0.142  0.858  0.250  1.0
  Nb  Nb5  1  0.858  0.716  0.750  1.0
  Nb  Nb6  1  0.284  0.142  0.750  1.0
  Nb  Nb7  1  0.858  0.142  0.750  1.0
[/CIF]
.
The compound described by EuNb3 crystallizes in the hexagonal P6_3/mmc space group. Eu(1) is bonded to twelve equivalent Nb(1) atoms to form a mixture of face and corner-sharing EuNb12 cuboctahedra. Nb(1) is bonded in a 10-coordinate geometry to four equivalent Eu(1) and six equivalent Nb(1) atoms. is represented by the CIF file [CIF]
data_EuNb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.486
_cell_length_b   6.486
_cell_length_c   5.077
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   184.987
_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
  Eu  Eu0  1  0.333  0.667  0.750  1.0
  Eu  Eu1  1  0.667  0.333  0.250  1.0
  Nb  Nb2  1  0.142  0.284  0.250  1.0
  Nb  Nb3  1  0.716  0.858  0.250  1.0
  Nb  Nb4  1  0.142  0.858  0.250  1.0
  Nb  Nb5  1  0.858  0.716  0.750  1.0
  Nb  Nb6  1  0.284  0.142  0.750  1.0
  Nb  Nb7  1  0.858  0.142  0.750  1.0
[/CIF]
.