The material described by Eu2NbSnO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to twelve equivalent O(1) atoms to form EuO12 cuboctahedra that share faces with four equivalent Nb(1)O6 octahedra and faces with four equivalent Sn(1)O6 octahedra. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 28°. Sn(1) is bonded to six equivalent O(1) atoms to form SnO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 28°. O(1) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), one Nb(1), and one Sn(1) atom. is represented by the CIF file [CIF]
data_Eu2NbSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.347
_cell_length_b   8.347
_cell_length_c   8.347
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   581.603
_cell_formula_units_Z   4
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  0.500  0.500  0.500  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Eu  Eu2  1  0.000  0.000  0.500  1.0
  Eu  Eu3  1  0.000  0.500  0.000  1.0
  Eu  Eu4  1  0.500  0.000  0.000  1.0
  Eu  Eu5  1  0.500  0.500  0.000  1.0
  Eu  Eu6  1  0.500  0.000  0.500  1.0
  Eu  Eu7  1  0.000  0.500  0.500  1.0
  Nb  Nb8  1  0.750  0.750  0.750  1.0
  Nb  Nb9  1  0.750  0.250  0.250  1.0
  Nb  Nb10  1  0.250  0.750  0.250  1.0
  Nb  Nb11  1  0.250  0.250  0.750  1.0
  Sn  Sn12  1  0.250  0.250  0.250  1.0
  Sn  Sn13  1  0.250  0.750  0.750  1.0
  Sn  Sn14  1  0.750  0.250  0.750  1.0
  Sn  Sn15  1  0.750  0.750  0.250  1.0
  O  O16  1  0.211  0.298  0.514  1.0
  O  O17  1  0.211  0.702  0.486  1.0
  O  O18  1  0.789  0.298  0.486  1.0
  O  O19  1  0.789  0.702  0.514  1.0
  O  O20  1  0.298  0.514  0.211  1.0
  O  O21  1  0.702  0.486  0.211  1.0
  O  O22  1  0.298  0.486  0.789  1.0
  O  O23  1  0.702  0.514  0.789  1.0
  O  O24  1  0.514  0.211  0.298  1.0
  O  O25  1  0.486  0.211  0.702  1.0
  O  O26  1  0.486  0.789  0.298  1.0
  O  O27  1  0.514  0.789  0.702  1.0
  O  O28  1  0.289  0.202  0.986  1.0
  O  O29  1  0.289  0.798  0.014  1.0
  O  O30  1  0.711  0.202  0.014  1.0
  O  O31  1  0.711  0.798  0.986  1.0
  O  O32  1  0.202  0.986  0.289  1.0
  O  O33  1  0.798  0.014  0.289  1.0
  O  O34  1  0.202  0.014  0.711  1.0
  O  O35  1  0.798  0.986  0.711  1.0
  O  O36  1  0.986  0.289  0.202  1.0
  O  O37  1  0.014  0.289  0.798  1.0
  O  O38  1  0.014  0.711  0.202  1.0
  O  O39  1  0.986  0.711  0.798  1.0
[/CIF]
.
The material described by Eu2NbSnO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to twelve equivalent O(1) atoms to form EuO12 cuboctahedra that share faces with four equivalent Nb(1)O6 octahedra and faces with four equivalent Sn(1)O6 octahedra. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 28°. Sn(1) is bonded to six equivalent O(1) atoms to form SnO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 28°. O(1) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), one Nb(1), and one Sn(1) atom. is represented by the CIF file [CIF]
data_Eu2NbSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.347
_cell_length_b   8.347
_cell_length_c   8.347
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   581.603
_cell_formula_units_Z   4
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  0.500  0.500  0.500  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Eu  Eu2  1  0.000  0.000  0.500  1.0
  Eu  Eu3  1  0.000  0.500  0.000  1.0
  Eu  Eu4  1  0.500  0.000  0.000  1.0
  Eu  Eu5  1  0.500  0.500  0.000  1.0
  Eu  Eu6  1  0.500  0.000  0.500  1.0
  Eu  Eu7  1  0.000  0.500  0.500  1.0
  Nb  Nb8  1  0.750  0.750  0.750  1.0
  Nb  Nb9  1  0.750  0.250  0.250  1.0
  Nb  Nb10  1  0.250  0.750  0.250  1.0
  Nb  Nb11  1  0.250  0.250  0.750  1.0
  Sn  Sn12  1  0.250  0.250  0.250  1.0
  Sn  Sn13  1  0.250  0.750  0.750  1.0
  Sn  Sn14  1  0.750  0.250  0.750  1.0
  Sn  Sn15  1  0.750  0.750  0.250  1.0
  O  O16  1  0.211  0.298  0.514  1.0
  O  O17  1  0.211  0.702  0.486  1.0
  O  O18  1  0.789  0.298  0.486  1.0
  O  O19  1  0.789  0.702  0.514  1.0
  O  O20  1  0.298  0.514  0.211  1.0
  O  O21  1  0.702  0.486  0.211  1.0
  O  O22  1  0.298  0.486  0.789  1.0
  O  O23  1  0.702  0.514  0.789  1.0
  O  O24  1  0.514  0.211  0.298  1.0
  O  O25  1  0.486  0.211  0.702  1.0
  O  O26  1  0.486  0.789  0.298  1.0
  O  O27  1  0.514  0.789  0.702  1.0
  O  O28  1  0.289  0.202  0.986  1.0
  O  O29  1  0.289  0.798  0.014  1.0
  O  O30  1  0.711  0.202  0.014  1.0
  O  O31  1  0.711  0.798  0.986  1.0
  O  O32  1  0.202  0.986  0.289  1.0
  O  O33  1  0.798  0.014  0.289  1.0
  O  O34  1  0.202  0.014  0.711  1.0
  O  O35  1  0.798  0.986  0.711  1.0
  O  O36  1  0.986  0.289  0.202  1.0
  O  O37  1  0.014  0.289  0.798  1.0
  O  O38  1  0.014  0.711  0.202  1.0
  O  O39  1  0.986  0.711  0.798  1.0
[/CIF]
.