The crystal structure described by Eu2PrNbO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a q6 geometry to twelve equivalent O(1) atoms. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Pr(1) is bonded to six equivalent O(1) atoms to form PrO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. O(1) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), one Pr(1), and one Nb(1) atom. is represented by the CIF card [CIF]
data_PrEu2NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.515
_cell_length_b   8.515
_cell_length_c   8.515
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   617.379
_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
  Pr  Pr0  1  0.250  0.250  0.250  1.0
  Pr  Pr1  1  0.250  0.750  0.750  1.0
  Pr  Pr2  1  0.750  0.250  0.750  1.0
  Pr  Pr3  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  0.209  0.301  0.520  1.0
  O  O17  1  0.209  0.699  0.480  1.0
  O  O18  1  0.791  0.301  0.480  1.0
  O  O19  1  0.791  0.699  0.520  1.0
  O  O20  1  0.301  0.520  0.209  1.0
  O  O21  1  0.699  0.480  0.209  1.0
  O  O22  1  0.301  0.480  0.791  1.0
  O  O23  1  0.699  0.520  0.791  1.0
  O  O24  1  0.520  0.209  0.301  1.0
  O  O25  1  0.480  0.209  0.699  1.0
  O  O26  1  0.480  0.791  0.301  1.0
  O  O27  1  0.520  0.791  0.699  1.0
  O  O28  1  0.291  0.199  0.980  1.0
  O  O29  1  0.291  0.801  0.020  1.0
  O  O30  1  0.709  0.199  0.020  1.0
  O  O31  1  0.709  0.801  0.980  1.0
  O  O32  1  0.199  0.980  0.291  1.0
  O  O33  1  0.801  0.020  0.291  1.0
  O  O34  1  0.199  0.020  0.709  1.0
  O  O35  1  0.801  0.980  0.709  1.0
  O  O36  1  0.980  0.291  0.199  1.0
  O  O37  1  0.020  0.291  0.801  1.0
  O  O38  1  0.020  0.709  0.199  1.0
  O  O39  1  0.980  0.709  0.801  1.0
[/CIF]
.
The crystal structure described by Eu2PrNbO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a q6 geometry to twelve equivalent O(1) atoms. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Pr(1) is bonded to six equivalent O(1) atoms to form PrO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. O(1) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), one Pr(1), and one Nb(1) atom. is represented by the CIF card [CIF]
data_PrEu2NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.515
_cell_length_b   8.515
_cell_length_c   8.515
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   617.379
_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
  Pr  Pr0  1  0.250  0.250  0.250  1.0
  Pr  Pr1  1  0.250  0.750  0.750  1.0
  Pr  Pr2  1  0.750  0.250  0.750  1.0
  Pr  Pr3  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  0.209  0.301  0.520  1.0
  O  O17  1  0.209  0.699  0.480  1.0
  O  O18  1  0.791  0.301  0.480  1.0
  O  O19  1  0.791  0.699  0.520  1.0
  O  O20  1  0.301  0.520  0.209  1.0
  O  O21  1  0.699  0.480  0.209  1.0
  O  O22  1  0.301  0.480  0.791  1.0
  O  O23  1  0.699  0.520  0.791  1.0
  O  O24  1  0.520  0.209  0.301  1.0
  O  O25  1  0.480  0.209  0.699  1.0
  O  O26  1  0.480  0.791  0.301  1.0
  O  O27  1  0.520  0.791  0.699  1.0
  O  O28  1  0.291  0.199  0.980  1.0
  O  O29  1  0.291  0.801  0.020  1.0
  O  O30  1  0.709  0.199  0.020  1.0
  O  O31  1  0.709  0.801  0.980  1.0
  O  O32  1  0.199  0.980  0.291  1.0
  O  O33  1  0.801  0.020  0.291  1.0
  O  O34  1  0.199  0.020  0.709  1.0
  O  O35  1  0.801  0.980  0.709  1.0
  O  O36  1  0.980  0.291  0.199  1.0
  O  O37  1  0.020  0.291  0.801  1.0
  O  O38  1  0.020  0.709  0.199  1.0
  O  O39  1  0.980  0.709  0.801  1.0
[/CIF]
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