The crystal structure described by YbEu3O6 is Spinel-like structured and crystallizes in the monoclinic C2/c space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form YbO6 octahedra that share corners with two equivalent Eu(1)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Eu(2)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles are 56°. In the second Yb site, Yb(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form YbO6 octahedra that share corners with two equivalent Eu(2)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Eu(1)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form distorted EuO6 octahedra that share corners with two equivalent Yb(1)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Yb(2)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Eu site, Eu(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form distorted EuO6 octahedra that share corners with two equivalent Yb(2)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Yb(1)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles are 57°. In the third Eu site, Eu(3) 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 distorted EuO6 octahedra that share  a cornercorner with one Yb(1)O6 octahedra,  a cornercorner with one Yb(2)O6 octahedra,  a cornercorner with one Eu(1)O6 octahedra,  a cornercorner with one Eu(2)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra,  an edgeedge with one Yb(1)O6 octahedra,  an edgeedge with one Yb(2)O6 octahedra,  an edgeedge with one Eu(1)O6 octahedra,  an edgeedge with one Eu(2)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. In the fourth Eu site, Eu(4) 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 distorted EuO6 octahedra that share  a cornercorner with one Yb(1)O6 octahedra,  a cornercorner with one Yb(2)O6 octahedra,  a cornercorner with one Eu(1)O6 octahedra,  a cornercorner with one Eu(2)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra,  an edgeedge with one Yb(1)O6 octahedra,  an edgeedge with one Yb(2)O6 octahedra,  an edgeedge with one Eu(1)O6 octahedra,  an edgeedge with one Eu(2)O6 octahedra, and edges with two equivalent Eu(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Yb(2), one Eu(1), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the second O site, O(2) is bonded to one Yb(1), one Eu(2), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 trigonal pyramids. In the third O site, O(3) is bonded to one Yb(1), one Eu(1), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the fourth O site, O(4) is bonded to one Yb(2), one Eu(2), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the fifth O site, O(5) is bonded to one Yb(2), one Eu(1), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the sixth O site, O(6) is bonded to one Yb(1), one Eu(2), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. is represented by the CIF file [CIF]
data_YbEu3O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.339
_cell_length_b   9.339
_cell_length_c   9.315
_cell_angle_alpha   109.440
_cell_angle_beta   109.410
_cell_angle_gamma   109.667
_symmetry_Int_Tables_number   1
_cell_volume   624.580
_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
  Yb  Yb0  1  0.500  0.500  0.500  1.0
  Yb  Yb1  1  1.000  0.500  0.000  1.0
  Yb  Yb2  1  0.000  1.000  0.500  1.0
  Yb  Yb3  1  0.500  0.000  0.000  1.0
  Eu  Eu4  1  0.220  0.970  0.250  1.0
  Eu  Eu5  1  0.780  0.030  0.750  1.0
  Eu  Eu6  1  0.281  0.531  0.750  1.0
  Eu  Eu7  1  0.970  0.251  0.220  1.0
  Eu  Eu8  1  0.719  0.469  0.250  1.0
  Eu  Eu9  1  0.030  0.749  0.780  1.0
  Eu  Eu10  1  0.531  0.749  0.280  1.0
  Eu  Eu11  1  0.469  0.250  0.720  1.0
  Eu  Eu12  1  0.251  0.219  0.970  1.0
  Eu  Eu13  1  0.749  0.781  0.030  1.0
  Eu  Eu14  1  0.750  0.281  0.530  1.0
  Eu  Eu15  1  0.250  0.719  0.470  1.0
  O  O16  1  0.036  0.265  1.000  1.0
  O  O17  1  0.964  0.735  0.000  1.0
  O  O18  1  0.458  0.466  0.228  1.0
  O  O19  1  0.738  0.230  0.272  1.0
  O  O20  1  0.268  0.004  0.040  1.0
  O  O21  1  0.542  0.534  0.772  1.0
  O  O22  1  0.262  0.770  0.728  1.0
  O  O23  1  0.732  0.996  0.960  1.0
  O  O24  1  0.766  0.036  0.500  1.0
  O  O25  1  0.464  0.228  0.460  1.0
  O  O26  1  0.234  0.964  0.500  1.0
  O  O27  1  0.536  0.772  0.540  1.0
  O  O28  1  0.233  0.268  0.737  1.0
  O  O29  1  0.767  0.732  0.263  1.0
  O  O30  1  0.032  0.497  0.763  1.0
  O  O31  1  0.968  0.503  0.237  1.0
  O  O32  1  0.005  0.041  0.268  1.0
  O  O33  1  0.995  0.959  0.732  1.0
  O  O34  1  0.273  0.737  0.232  1.0
  O  O35  1  0.727  0.263  0.768  1.0
  O  O36  1  0.498  0.766  0.035  1.0
  O  O37  1  0.502  0.234  0.965  1.0
  O  O38  1  0.230  0.463  0.465  1.0
  O  O39  1  0.770  0.537  0.535  1.0
[/CIF]
.
The crystal structure described by YbEu3O6 is Spinel-like structured and crystallizes in the monoclinic C2/c space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form YbO6 octahedra that share corners with two equivalent Eu(1)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Eu(2)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles are 56°. In the second Yb site, Yb(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form YbO6 octahedra that share corners with two equivalent Eu(2)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Eu(1)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form distorted EuO6 octahedra that share corners with two equivalent Yb(1)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Yb(2)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Eu site, Eu(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form distorted EuO6 octahedra that share corners with two equivalent Yb(2)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra, edges with two equivalent Yb(1)O6 octahedra, edges with two equivalent Eu(3)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles are 57°. In the third Eu site, Eu(3) 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 distorted EuO6 octahedra that share  a cornercorner with one Yb(1)O6 octahedra,  a cornercorner with one Yb(2)O6 octahedra,  a cornercorner with one Eu(1)O6 octahedra,  a cornercorner with one Eu(2)O6 octahedra, corners with two equivalent Eu(4)O6 octahedra,  an edgeedge with one Yb(1)O6 octahedra,  an edgeedge with one Yb(2)O6 octahedra,  an edgeedge with one Eu(1)O6 octahedra,  an edgeedge with one Eu(2)O6 octahedra, and edges with two equivalent Eu(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. In the fourth Eu site, Eu(4) 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 distorted EuO6 octahedra that share  a cornercorner with one Yb(1)O6 octahedra,  a cornercorner with one Yb(2)O6 octahedra,  a cornercorner with one Eu(1)O6 octahedra,  a cornercorner with one Eu(2)O6 octahedra, corners with two equivalent Eu(3)O6 octahedra,  an edgeedge with one Yb(1)O6 octahedra,  an edgeedge with one Yb(2)O6 octahedra,  an edgeedge with one Eu(1)O6 octahedra,  an edgeedge with one Eu(2)O6 octahedra, and edges with two equivalent Eu(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Yb(2), one Eu(1), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the second O site, O(2) is bonded to one Yb(1), one Eu(2), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 trigonal pyramids. In the third O site, O(3) is bonded to one Yb(1), one Eu(1), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the fourth O site, O(4) is bonded to one Yb(2), one Eu(2), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the fifth O site, O(5) is bonded to one Yb(2), one Eu(1), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. In the sixth O site, O(6) is bonded to one Yb(1), one Eu(2), one Eu(3), and one Eu(4) atom to form a mixture of corner and edge-sharing OYbEu3 tetrahedra. is represented by the CIF file [CIF]
data_YbEu3O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.339
_cell_length_b   9.339
_cell_length_c   9.315
_cell_angle_alpha   109.440
_cell_angle_beta   109.410
_cell_angle_gamma   109.667
_symmetry_Int_Tables_number   1
_cell_volume   624.580
_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
  Yb  Yb0  1  0.500  0.500  0.500  1.0
  Yb  Yb1  1  1.000  0.500  0.000  1.0
  Yb  Yb2  1  0.000  1.000  0.500  1.0
  Yb  Yb3  1  0.500  0.000  0.000  1.0
  Eu  Eu4  1  0.220  0.970  0.250  1.0
  Eu  Eu5  1  0.780  0.030  0.750  1.0
  Eu  Eu6  1  0.281  0.531  0.750  1.0
  Eu  Eu7  1  0.970  0.251  0.220  1.0
  Eu  Eu8  1  0.719  0.469  0.250  1.0
  Eu  Eu9  1  0.030  0.749  0.780  1.0
  Eu  Eu10  1  0.531  0.749  0.280  1.0
  Eu  Eu11  1  0.469  0.250  0.720  1.0
  Eu  Eu12  1  0.251  0.219  0.970  1.0
  Eu  Eu13  1  0.749  0.781  0.030  1.0
  Eu  Eu14  1  0.750  0.281  0.530  1.0
  Eu  Eu15  1  0.250  0.719  0.470  1.0
  O  O16  1  0.036  0.265  1.000  1.0
  O  O17  1  0.964  0.735  0.000  1.0
  O  O18  1  0.458  0.466  0.228  1.0
  O  O19  1  0.738  0.230  0.272  1.0
  O  O20  1  0.268  0.004  0.040  1.0
  O  O21  1  0.542  0.534  0.772  1.0
  O  O22  1  0.262  0.770  0.728  1.0
  O  O23  1  0.732  0.996  0.960  1.0
  O  O24  1  0.766  0.036  0.500  1.0
  O  O25  1  0.464  0.228  0.460  1.0
  O  O26  1  0.234  0.964  0.500  1.0
  O  O27  1  0.536  0.772  0.540  1.0
  O  O28  1  0.233  0.268  0.737  1.0
  O  O29  1  0.767  0.732  0.263  1.0
  O  O30  1  0.032  0.497  0.763  1.0
  O  O31  1  0.968  0.503  0.237  1.0
  O  O32  1  0.005  0.041  0.268  1.0
  O  O33  1  0.995  0.959  0.732  1.0
  O  O34  1  0.273  0.737  0.232  1.0
  O  O35  1  0.727  0.263  0.768  1.0
  O  O36  1  0.498  0.766  0.035  1.0
  O  O37  1  0.502  0.234  0.965  1.0
  O  O38  1  0.230  0.463  0.465  1.0
  O  O39  1  0.770  0.537  0.535  1.0
[/CIF]
.