The material structure described by Eu2NdNbO6 is Orthorhombic Perovskite-derived structured and 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 Nd(1)O6 octahedra and faces with four equivalent Nb(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. Nd(1) is bonded to six equivalent O(1) atoms to form NdO6 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°. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Nd(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 Nd(1), and one Nb(1) atom. is represented by the CIF file [CIF]
data_NdEu2NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.498
_cell_length_b   8.498
_cell_length_c   8.498
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   613.718
_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
  Nd  Nd0  1  0.250  0.250  0.250  1.0
  Nd  Nd1  1  0.250  0.750  0.750  1.0
  Nd  Nd2  1  0.750  0.250  0.750  1.0
  Nd  Nd3  1  0.750  0.750  0.250  1.0
  Eu  Eu4  1  0.500  0.500  0.500  1.0
  Eu  Eu5  1  0.000  0.000  0.000  1.0
  Eu  Eu6  1  0.000  0.000  0.500  1.0
  Eu  Eu7  1  0.000  0.500  0.000  1.0
  Eu  Eu8  1  0.500  0.000  0.000  1.0
  Eu  Eu9  1  0.500  0.500  0.000  1.0
  Eu  Eu10  1  0.500  0.000  0.500  1.0
  Eu  Eu11  1  0.000  0.500  0.500  1.0
  Nb  Nb12  1  0.750  0.750  0.750  1.0
  Nb  Nb13  1  0.750  0.250  0.250  1.0
  Nb  Nb14  1  0.250  0.750  0.250  1.0
  Nb  Nb15  1  0.250  0.250  0.750  1.0
  O  O16  1  0.210  0.299  0.518  1.0
  O  O17  1  0.210  0.701  0.482  1.0
  O  O18  1  0.790  0.299  0.482  1.0
  O  O19  1  0.790  0.701  0.518  1.0
  O  O20  1  0.299  0.518  0.210  1.0
  O  O21  1  0.701  0.482  0.210  1.0
  O  O22  1  0.299  0.482  0.790  1.0
  O  O23  1  0.701  0.518  0.790  1.0
  O  O24  1  0.518  0.210  0.299  1.0
  O  O25  1  0.482  0.210  0.701  1.0
  O  O26  1  0.482  0.790  0.299  1.0
  O  O27  1  0.518  0.790  0.701  1.0
  O  O28  1  0.290  0.201  0.982  1.0
  O  O29  1  0.290  0.799  0.018  1.0
  O  O30  1  0.710  0.201  0.018  1.0
  O  O31  1  0.710  0.799  0.982  1.0
  O  O32  1  0.201  0.982  0.290  1.0
  O  O33  1  0.799  0.018  0.290  1.0
  O  O34  1  0.201  0.018  0.710  1.0
  O  O35  1  0.799  0.982  0.710  1.0
  O  O36  1  0.982  0.290  0.201  1.0
  O  O37  1  0.018  0.290  0.799  1.0
  O  O38  1  0.018  0.710  0.201  1.0
  O  O39  1  0.982  0.710  0.799  1.0
[/CIF]
.
The material structure described by Eu2NdNbO6 is Orthorhombic Perovskite-derived structured and 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 Nd(1)O6 octahedra and faces with four equivalent Nb(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. Nd(1) is bonded to six equivalent O(1) atoms to form NdO6 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°. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Nd(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 Nd(1), and one Nb(1) atom. is represented by the CIF file [CIF]
data_NdEu2NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.498
_cell_length_b   8.498
_cell_length_c   8.498
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   613.718
_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
  Nd  Nd0  1  0.250  0.250  0.250  1.0
  Nd  Nd1  1  0.250  0.750  0.750  1.0
  Nd  Nd2  1  0.750  0.250  0.750  1.0
  Nd  Nd3  1  0.750  0.750  0.250  1.0
  Eu  Eu4  1  0.500  0.500  0.500  1.0
  Eu  Eu5  1  0.000  0.000  0.000  1.0
  Eu  Eu6  1  0.000  0.000  0.500  1.0
  Eu  Eu7  1  0.000  0.500  0.000  1.0
  Eu  Eu8  1  0.500  0.000  0.000  1.0
  Eu  Eu9  1  0.500  0.500  0.000  1.0
  Eu  Eu10  1  0.500  0.000  0.500  1.0
  Eu  Eu11  1  0.000  0.500  0.500  1.0
  Nb  Nb12  1  0.750  0.750  0.750  1.0
  Nb  Nb13  1  0.750  0.250  0.250  1.0
  Nb  Nb14  1  0.250  0.750  0.250  1.0
  Nb  Nb15  1  0.250  0.250  0.750  1.0
  O  O16  1  0.210  0.299  0.518  1.0
  O  O17  1  0.210  0.701  0.482  1.0
  O  O18  1  0.790  0.299  0.482  1.0
  O  O19  1  0.790  0.701  0.518  1.0
  O  O20  1  0.299  0.518  0.210  1.0
  O  O21  1  0.701  0.482  0.210  1.0
  O  O22  1  0.299  0.482  0.790  1.0
  O  O23  1  0.701  0.518  0.790  1.0
  O  O24  1  0.518  0.210  0.299  1.0
  O  O25  1  0.482  0.210  0.701  1.0
  O  O26  1  0.482  0.790  0.299  1.0
  O  O27  1  0.518  0.790  0.701  1.0
  O  O28  1  0.290  0.201  0.982  1.0
  O  O29  1  0.290  0.799  0.018  1.0
  O  O30  1  0.710  0.201  0.018  1.0
  O  O31  1  0.710  0.799  0.982  1.0
  O  O32  1  0.201  0.982  0.290  1.0
  O  O33  1  0.799  0.018  0.290  1.0
  O  O34  1  0.201  0.018  0.710  1.0
  O  O35  1  0.799  0.982  0.710  1.0
  O  O36  1  0.982  0.290  0.201  1.0
  O  O37  1  0.018  0.290  0.799  1.0
  O  O38  1  0.018  0.710  0.201  1.0
  O  O39  1  0.982  0.710  0.799  1.0
[/CIF]
.