The compound described by TbEu2NbO6 is Orthorhombic Perovskite-derived structured and crystallizes in the cubic Pn-3 space group. Tb(1) is bonded to six equivalent O(1) atoms to form TbO6 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 26°. 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 Tb(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 eight equivalent O(1) atoms. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Tb(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 26°. O(1) is bonded in a 3-coordinate geometry to one Tb(1), one Eu(1), two equivalent Eu(2), and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbEu2NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.341
_cell_length_b   8.341
_cell_length_c   8.341
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   580.353
_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
  Tb  Tb0  1  0.250  0.250  0.250  1.0
  Tb  Tb1  1  0.250  0.750  0.750  1.0
  Tb  Tb2  1  0.750  0.250  0.750  1.0
  Tb  Tb3  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  0.214  0.293  0.514  1.0
  O  O17  1  0.214  0.707  0.486  1.0
  O  O18  1  0.786  0.293  0.486  1.0
  O  O19  1  0.786  0.707  0.514  1.0
  O  O20  1  0.293  0.514  0.214  1.0
  O  O21  1  0.707  0.486  0.214  1.0
  O  O22  1  0.293  0.486  0.786  1.0
  O  O23  1  0.707  0.514  0.786  1.0
  O  O24  1  0.514  0.214  0.293  1.0
  O  O25  1  0.486  0.214  0.707  1.0
  O  O26  1  0.486  0.786  0.293  1.0
  O  O27  1  0.514  0.786  0.707  1.0
  O  O28  1  0.286  0.207  0.986  1.0
  O  O29  1  0.286  0.793  0.014  1.0
  O  O30  1  0.714  0.207  0.014  1.0
  O  O31  1  0.714  0.793  0.986  1.0
  O  O32  1  0.207  0.986  0.286  1.0
  O  O33  1  0.793  0.014  0.286  1.0
  O  O34  1  0.207  0.014  0.714  1.0
  O  O35  1  0.793  0.986  0.714  1.0
  O  O36  1  0.986  0.286  0.207  1.0
  O  O37  1  0.014  0.286  0.793  1.0
  O  O38  1  0.014  0.714  0.207  1.0
  O  O39  1  0.986  0.714  0.793  1.0
[/CIF]
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The compound described by TbEu2NbO6 is Orthorhombic Perovskite-derived structured and crystallizes in the cubic Pn-3 space group. Tb(1) is bonded to six equivalent O(1) atoms to form TbO6 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 26°. 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 Tb(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 eight equivalent O(1) atoms. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Tb(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 26°. O(1) is bonded in a 3-coordinate geometry to one Tb(1), one Eu(1), two equivalent Eu(2), and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbEu2NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.341
_cell_length_b   8.341
_cell_length_c   8.341
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   580.353
_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
  Tb  Tb0  1  0.250  0.250  0.250  1.0
  Tb  Tb1  1  0.250  0.750  0.750  1.0
  Tb  Tb2  1  0.750  0.250  0.750  1.0
  Tb  Tb3  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  0.214  0.293  0.514  1.0
  O  O17  1  0.214  0.707  0.486  1.0
  O  O18  1  0.786  0.293  0.486  1.0
  O  O19  1  0.786  0.707  0.514  1.0
  O  O20  1  0.293  0.514  0.214  1.0
  O  O21  1  0.707  0.486  0.214  1.0
  O  O22  1  0.293  0.486  0.786  1.0
  O  O23  1  0.707  0.514  0.786  1.0
  O  O24  1  0.514  0.214  0.293  1.0
  O  O25  1  0.486  0.214  0.707  1.0
  O  O26  1  0.486  0.786  0.293  1.0
  O  O27  1  0.514  0.786  0.707  1.0
  O  O28  1  0.286  0.207  0.986  1.0
  O  O29  1  0.286  0.793  0.014  1.0
  O  O30  1  0.714  0.207  0.014  1.0
  O  O31  1  0.714  0.793  0.986  1.0
  O  O32  1  0.207  0.986  0.286  1.0
  O  O33  1  0.793  0.014  0.286  1.0
  O  O34  1  0.207  0.014  0.714  1.0
  O  O35  1  0.793  0.986  0.714  1.0
  O  O36  1  0.986  0.286  0.207  1.0
  O  O37  1  0.014  0.286  0.793  1.0
  O  O38  1  0.014  0.714  0.207  1.0
  O  O39  1  0.986  0.714  0.793  1.0
[/CIF]
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