The material structure described by Eu3NbO6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. In the second Eu site, Eu(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form EuO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-40°. Nb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NbO6 octahedra that share corners with six equivalent Eu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-40°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Eu(2), two equivalent Eu(1), and one Nb(1) atom to form distorted corner-sharing OEu3Nb tetrahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Eu(2), three equivalent Eu(1), and one Nb(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Eu(2), three equivalent Eu(1), and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu3NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.767
_cell_length_b   6.036
_cell_length_c   10.115
_cell_angle_alpha   90.000
_cell_angle_beta   124.742
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   289.296
_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
  Eu  Eu0  1  0.237  0.442  0.754  1.0
  Eu  Eu1  1  0.237  0.058  0.254  1.0
  Eu  Eu2  1  0.763  0.558  0.246  1.0
  Eu  Eu3  1  0.763  0.942  0.746  1.0
  Eu  Eu4  1  0.500  0.500  0.500  1.0
  Eu  Eu5  1  0.500  0.000  0.000  1.0
  Nb  Nb6  1  0.000  0.500  0.000  1.0
  Nb  Nb7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.345  0.052  0.727  1.0
  O  O9  1  0.345  0.448  0.227  1.0
  O  O10  1  0.655  0.948  0.273  1.0
  O  O11  1  0.655  0.552  0.773  1.0
  O  O12  1  0.772  0.179  0.556  1.0
  O  O13  1  0.772  0.321  0.056  1.0
  O  O14  1  0.228  0.821  0.444  1.0
  O  O15  1  0.228  0.679  0.944  1.0
  O  O16  1  0.101  0.221  0.929  1.0
  O  O17  1  0.101  0.279  0.429  1.0
  O  O18  1  0.899  0.779  0.071  1.0
  O  O19  1  0.899  0.721  0.571  1.0
[/CIF]
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The material structure described by Eu3NbO6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. In the second Eu site, Eu(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form EuO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-40°. Nb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NbO6 octahedra that share corners with six equivalent Eu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-40°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Eu(2), two equivalent Eu(1), and one Nb(1) atom to form distorted corner-sharing OEu3Nb tetrahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Eu(2), three equivalent Eu(1), and one Nb(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Eu(2), three equivalent Eu(1), and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu3NbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.767
_cell_length_b   6.036
_cell_length_c   10.115
_cell_angle_alpha   90.000
_cell_angle_beta   124.742
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   289.296
_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
  Eu  Eu0  1  0.237  0.442  0.754  1.0
  Eu  Eu1  1  0.237  0.058  0.254  1.0
  Eu  Eu2  1  0.763  0.558  0.246  1.0
  Eu  Eu3  1  0.763  0.942  0.746  1.0
  Eu  Eu4  1  0.500  0.500  0.500  1.0
  Eu  Eu5  1  0.500  0.000  0.000  1.0
  Nb  Nb6  1  0.000  0.500  0.000  1.0
  Nb  Nb7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.345  0.052  0.727  1.0
  O  O9  1  0.345  0.448  0.227  1.0
  O  O10  1  0.655  0.948  0.273  1.0
  O  O11  1  0.655  0.552  0.773  1.0
  O  O12  1  0.772  0.179  0.556  1.0
  O  O13  1  0.772  0.321  0.056  1.0
  O  O14  1  0.228  0.821  0.444  1.0
  O  O15  1  0.228  0.679  0.944  1.0
  O  O16  1  0.101  0.221  0.929  1.0
  O  O17  1  0.101  0.279  0.429  1.0
  O  O18  1  0.899  0.779  0.071  1.0
  O  O19  1  0.899  0.721  0.571  1.0
[/CIF]
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