The compound described by SrEuLaNbO6 crystallizes in the tetragonal P42_12 space group. Sr(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Eu(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. La(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form LaO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-35°. Nb(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form NbO6 octahedra that share corners with six equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-35°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one La(1), and one Nb(1) atom to form distorted OSr4LaNb octahedra that share corners with four equivalent O(1)Sr4LaNb octahedra, corners with eight equivalent O(3)SrLaEuNb tetrahedra, edges with four equivalent O(1)Sr4LaNb octahedra, and edges with eight equivalent O(3)SrLaEuNb tetrahedra. The corner-sharing octahedral tilt angles are 6°. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Eu(1), one La(1), and one Nb(1) atom. In the third O site, O(3) is bonded to one Sr(1), one Eu(1), one La(1), and one Nb(1) atom to form distorted OSrLaEuNb tetrahedra that share corners with two equivalent O(1)Sr4LaNb octahedra, corners with ten equivalent O(3)SrLaEuNb tetrahedra, edges with two equivalent O(1)Sr4LaNb octahedra, and  an edgeedge with one O(3)SrLaEuNb tetrahedra. The corner-sharing octahedral tilt angles range from 67-68°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrLaEuNbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.971
_cell_length_b   5.971
_cell_length_c   8.746
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   311.786
_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
  Sr  Sr0  1  0.500  0.500  0.000  1.0
  Sr  Sr1  1  0.000  0.000  0.000  1.0
  La  La2  1  0.500  0.000  0.750  1.0
  La  La3  1  0.000  0.500  0.250  1.0
  Eu  Eu4  1  0.500  0.500  0.500  1.0
  Eu  Eu5  1  0.000  0.000  0.500  1.0
  Nb  Nb6  1  0.500  0.000  0.251  1.0
  Nb  Nb7  1  0.000  0.500  0.749  1.0
  O  O8  1  0.500  0.000  0.018  1.0
  O  O9  1  0.000  0.500  0.982  1.0
  O  O10  1  0.500  0.000  0.484  1.0
  O  O11  1  0.000  0.500  0.516  1.0
  O  O12  1  0.695  0.650  0.747  1.0
  O  O13  1  0.305  0.350  0.747  1.0
  O  O14  1  0.850  0.195  0.747  1.0
  O  O15  1  0.150  0.805  0.747  1.0
  O  O16  1  0.805  0.150  0.253  1.0
  O  O17  1  0.195  0.850  0.253  1.0
  O  O18  1  0.650  0.695  0.253  1.0
  O  O19  1  0.350  0.305  0.253  1.0
[/CIF]
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The compound described by SrEuLaNbO6 crystallizes in the tetragonal P42_12 space group. Sr(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Eu(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. La(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form LaO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-35°. Nb(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form NbO6 octahedra that share corners with six equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-35°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one La(1), and one Nb(1) atom to form distorted OSr4LaNb octahedra that share corners with four equivalent O(1)Sr4LaNb octahedra, corners with eight equivalent O(3)SrLaEuNb tetrahedra, edges with four equivalent O(1)Sr4LaNb octahedra, and edges with eight equivalent O(3)SrLaEuNb tetrahedra. The corner-sharing octahedral tilt angles are 6°. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Eu(1), one La(1), and one Nb(1) atom. In the third O site, O(3) is bonded to one Sr(1), one Eu(1), one La(1), and one Nb(1) atom to form distorted OSrLaEuNb tetrahedra that share corners with two equivalent O(1)Sr4LaNb octahedra, corners with ten equivalent O(3)SrLaEuNb tetrahedra, edges with two equivalent O(1)Sr4LaNb octahedra, and  an edgeedge with one O(3)SrLaEuNb tetrahedra. The corner-sharing octahedral tilt angles range from 67-68°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrLaEuNbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.971
_cell_length_b   5.971
_cell_length_c   8.746
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   311.786
_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
  Sr  Sr0  1  0.500  0.500  0.000  1.0
  Sr  Sr1  1  0.000  0.000  0.000  1.0
  La  La2  1  0.500  0.000  0.750  1.0
  La  La3  1  0.000  0.500  0.250  1.0
  Eu  Eu4  1  0.500  0.500  0.500  1.0
  Eu  Eu5  1  0.000  0.000  0.500  1.0
  Nb  Nb6  1  0.500  0.000  0.251  1.0
  Nb  Nb7  1  0.000  0.500  0.749  1.0
  O  O8  1  0.500  0.000  0.018  1.0
  O  O9  1  0.000  0.500  0.982  1.0
  O  O10  1  0.500  0.000  0.484  1.0
  O  O11  1  0.000  0.500  0.516  1.0
  O  O12  1  0.695  0.650  0.747  1.0
  O  O13  1  0.305  0.350  0.747  1.0
  O  O14  1  0.850  0.195  0.747  1.0
  O  O15  1  0.150  0.805  0.747  1.0
  O  O16  1  0.805  0.150  0.253  1.0
  O  O17  1  0.195  0.850  0.253  1.0
  O  O18  1  0.650  0.695  0.253  1.0
  O  O19  1  0.350  0.305  0.253  1.0
[/CIF]
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