The crystal structure described by SrEuLaNbO6 crystallizes in the orthorhombic P222 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted square co-planar geometry to four equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to four equivalent O(6) atoms. In the third Sr site, Sr(3) is bonded in a distorted square co-planar geometry to four equivalent O(4) atoms. In the fourth Sr site, Sr(4) is bonded in a distorted square co-planar geometry to four equivalent O(3) atoms. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted square co-planar geometry to four equivalent O(2) atoms. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. In the third Eu site, Eu(3) is bonded in a q6 geometry to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. In the fourth Eu site, Eu(4) is bonded in a q6 geometry to four equivalent O(4), four equivalent O(5), and four equivalent O(6) atoms. La(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form LaO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-31°. Nb(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form NbO6 octahedra that share corners with six equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-31°. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Eu(4), one La(1), and one Nb(1) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to one Sr(2), one Eu(4), one La(1), and one Nb(1) atom. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Eu(2), one Eu(3), one La(1), and one Nb(1) atom. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(3), one La(1), and one Nb(1) atom. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to one Sr(4), one Eu(3), one La(1), and one Nb(1) atom. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(3), one Eu(4), one La(1), and one Nb(1) atom. is represented by the CIF card [CIF]
data_SrLaEuNbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.597
_cell_length_b   8.601
_cell_length_c   8.583
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   634.579
_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
  Sr  Sr0  1  0.000  0.500  0.500  1.0
  Sr  Sr1  1  0.500  0.000  0.500  1.0
  Sr  Sr2  1  0.500  0.500  0.000  1.0
  Sr  Sr3  1  0.000  0.500  0.000  1.0
  La  La4  1  0.750  0.750  0.750  1.0
  La  La5  1  0.250  0.250  0.750  1.0
  La  La6  1  0.250  0.750  0.250  1.0
  La  La7  1  0.750  0.250  0.250  1.0
  Eu  Eu8  1  0.500  0.000  0.000  1.0
  Eu  Eu9  1  0.000  0.000  0.500  1.0
  Eu  Eu10  1  0.000  0.000  0.000  1.0
  Eu  Eu11  1  0.500  0.500  0.500  1.0
  Nb  Nb12  1  0.251  0.251  0.250  1.0
  Nb  Nb13  1  0.749  0.749  0.250  1.0
  Nb  Nb14  1  0.749  0.251  0.750  1.0
  Nb  Nb15  1  0.251  0.749  0.750  1.0
  O  O16  1  0.021  0.196  0.293  1.0
  O  O17  1  0.979  0.804  0.293  1.0
  O  O18  1  0.979  0.196  0.707  1.0
  O  O19  1  0.021  0.804  0.707  1.0
  O  O20  1  0.293  0.021  0.196  1.0
  O  O21  1  0.293  0.979  0.804  1.0
  O  O22  1  0.707  0.979  0.196  1.0
  O  O23  1  0.707  0.021  0.804  1.0
  O  O24  1  0.197  0.291  0.021  1.0
  O  O25  1  0.803  0.291  0.979  1.0
  O  O26  1  0.197  0.709  0.979  1.0
  O  O27  1  0.803  0.709  0.021  1.0
  O  O28  1  0.479  0.302  0.208  1.0
  O  O29  1  0.521  0.698  0.208  1.0
  O  O30  1  0.521  0.302  0.792  1.0
  O  O31  1  0.479  0.698  0.792  1.0
  O  O32  1  0.208  0.478  0.303  1.0
  O  O33  1  0.208  0.522  0.697  1.0
  O  O34  1  0.792  0.522  0.303  1.0
  O  O35  1  0.792  0.478  0.697  1.0
  O  O36  1  0.302  0.208  0.479  1.0
  O  O37  1  0.698  0.208  0.521  1.0
  O  O38  1  0.302  0.792  0.521  1.0
  O  O39  1  0.698  0.792  0.479  1.0
[/CIF]
.
The crystal structure described by SrEuLaNbO6 crystallizes in the orthorhombic P222 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted square co-planar geometry to four equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to four equivalent O(6) atoms. In the third Sr site, Sr(3) is bonded in a distorted square co-planar geometry to four equivalent O(4) atoms. In the fourth Sr site, Sr(4) is bonded in a distorted square co-planar geometry to four equivalent O(3) atoms. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted square co-planar geometry to four equivalent O(2) atoms. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. In the third Eu site, Eu(3) is bonded in a q6 geometry to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. In the fourth Eu site, Eu(4) is bonded in a q6 geometry to four equivalent O(4), four equivalent O(5), and four equivalent O(6) atoms. La(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form LaO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-31°. Nb(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form NbO6 octahedra that share corners with six equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-31°. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Eu(4), one La(1), and one Nb(1) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to one Sr(2), one Eu(4), one La(1), and one Nb(1) atom. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Eu(2), one Eu(3), one La(1), and one Nb(1) atom. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(3), one La(1), and one Nb(1) atom. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to one Sr(4), one Eu(3), one La(1), and one Nb(1) atom. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(3), one Eu(4), one La(1), and one Nb(1) atom. is represented by the CIF card [CIF]
data_SrLaEuNbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.597
_cell_length_b   8.601
_cell_length_c   8.583
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   634.579
_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
  Sr  Sr0  1  0.000  0.500  0.500  1.0
  Sr  Sr1  1  0.500  0.000  0.500  1.0
  Sr  Sr2  1  0.500  0.500  0.000  1.0
  Sr  Sr3  1  0.000  0.500  0.000  1.0
  La  La4  1  0.750  0.750  0.750  1.0
  La  La5  1  0.250  0.250  0.750  1.0
  La  La6  1  0.250  0.750  0.250  1.0
  La  La7  1  0.750  0.250  0.250  1.0
  Eu  Eu8  1  0.500  0.000  0.000  1.0
  Eu  Eu9  1  0.000  0.000  0.500  1.0
  Eu  Eu10  1  0.000  0.000  0.000  1.0
  Eu  Eu11  1  0.500  0.500  0.500  1.0
  Nb  Nb12  1  0.251  0.251  0.250  1.0
  Nb  Nb13  1  0.749  0.749  0.250  1.0
  Nb  Nb14  1  0.749  0.251  0.750  1.0
  Nb  Nb15  1  0.251  0.749  0.750  1.0
  O  O16  1  0.021  0.196  0.293  1.0
  O  O17  1  0.979  0.804  0.293  1.0
  O  O18  1  0.979  0.196  0.707  1.0
  O  O19  1  0.021  0.804  0.707  1.0
  O  O20  1  0.293  0.021  0.196  1.0
  O  O21  1  0.293  0.979  0.804  1.0
  O  O22  1  0.707  0.979  0.196  1.0
  O  O23  1  0.707  0.021  0.804  1.0
  O  O24  1  0.197  0.291  0.021  1.0
  O  O25  1  0.803  0.291  0.979  1.0
  O  O26  1  0.197  0.709  0.979  1.0
  O  O27  1  0.803  0.709  0.021  1.0
  O  O28  1  0.479  0.302  0.208  1.0
  O  O29  1  0.521  0.698  0.208  1.0
  O  O30  1  0.521  0.302  0.792  1.0
  O  O31  1  0.479  0.698  0.792  1.0
  O  O32  1  0.208  0.478  0.303  1.0
  O  O33  1  0.208  0.522  0.697  1.0
  O  O34  1  0.792  0.522  0.303  1.0
  O  O35  1  0.792  0.478  0.697  1.0
  O  O36  1  0.302  0.208  0.479  1.0
  O  O37  1  0.698  0.208  0.521  1.0
  O  O38  1  0.302  0.792  0.521  1.0
  O  O39  1  0.698  0.792  0.479  1.0
[/CIF]
.