The compound described by Sr3Nb is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Sr(2) and four equivalent Nb(1) atoms to form a mixture of distorted corner, edge, and face-sharing SrSr4Nb4 tetrahedra. In the second Sr site, Sr(2) is bonded in a 14-coordinate geometry to eight equivalent Sr(1) and six equivalent Nb(1) atoms. Nb(1) is bonded in a body-centered cubic geometry to six equivalent Sr(2) and eight equivalent Sr(1) atoms. is represented by the CIF file [CIF]
data_Sr3Nb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.068
_cell_length_b   6.068
_cell_length_c   6.068
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   157.957
_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
  Sr  Sr0  1  0.250  0.250  0.250  1.0
  Sr  Sr1  1  0.750  0.750  0.750  1.0
  Sr  Sr2  1  0.500  0.500  0.500  1.0
  Nb  Nb3  1  0.000  0.000  0.000  1.0
[/CIF]
.
The compound described by Sr3Nb is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Sr(2) and four equivalent Nb(1) atoms to form a mixture of distorted corner, edge, and face-sharing SrSr4Nb4 tetrahedra. In the second Sr site, Sr(2) is bonded in a 14-coordinate geometry to eight equivalent Sr(1) and six equivalent Nb(1) atoms. Nb(1) is bonded in a body-centered cubic geometry to six equivalent Sr(2) and eight equivalent Sr(1) atoms. is represented by the CIF file [CIF]
data_Sr3Nb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.068
_cell_length_b   6.068
_cell_length_c   6.068
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   157.957
_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
  Sr  Sr0  1  0.250  0.250  0.250  1.0
  Sr  Sr1  1  0.750  0.750  0.750  1.0
  Sr  Sr2  1  0.500  0.500  0.500  1.0
  Nb  Nb3  1  0.000  0.000  0.000  1.0
[/CIF]
.