data_YbEu2TaO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.89
_cell_length_b   5.89
_cell_length_c   5.89
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YbEu2TaO6
_chemical_formula_sum   'Yb1 Eu2 Ta1 O6'
_cell_volume   144.25
_cell_formula_units_Z   1
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  0.0  0.0  0.0  1.0
  Eu  Eu1  1  0.24  0.24  0.24  1.0
  Eu  Eu2  1  0.08  0.08  0.08  1.0
  Ta  Ta3  1  0.16  0.16  0.16  1.0
  O  O4  1  0.14  0.16  0.16  1.0
  O  O5  1  0.18  0.16  0.16  1.0
  O  O6  1  0.16  0.14  0.16  1.0
  O  O7  1  0.16  0.18  0.16  1.0
  O  O8  1  0.16  0.16  0.14  1.0
  O  O9  1  0.16  0.16  0.18  1.0

data_YbEu2TaO6
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.89
_cell_length_b   5.89
_cell_length_c   14.42
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   YbEu2TaO6
_chemical_formula_sum   'Yb3 Eu6 Ta3 O18'
_cell_volume   432.76
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.0  1.0
  Eu  Eu1  3  0.0  0.0  0.76  1.0
  Eu  Eu2  3  0.0  0.0  0.92  1.0
  Ta  Ta3  3  0.0  0.0  0.84  1.0
  O  O4  9  0.01  0.01  0.83  1.0
  O  O5  9  0.01  0.01  0.84  1.0

Yb Eu Eu Ta O O O O O O
Yb Eu Eu Ta O O O O O O 0 2 o o o 1 9 o o o 1 8 o o o 1 7 o o o 1 6 o o o 1 5 o o o 1 4 o o o 1 3 o o o 2 9 o o o 2 8 o o o 2 7 o o o 2 6 o o o 2 5 o o o 2 4 o o o 2 3 o o o 3 6 o o o 3 4 o o o 3 8 o o o 3 9 o o o 3 7 o o o 3 5 o o o 4 6 o o o 4 8 o o o 5 9 o o o 5 7 o o o 6 8 o o o 7 9 o o o 
YbEu2TaO6 is Copper structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three YbEu2TaO6 clusters. Yb(1) is bonded in a single-bond geometry to one Eu(2) atom. The Yb(1)-Eu(2) bond length is 1.17 Å. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 3-coordinate geometry to three equivalent O(2) atoms. All Eu(1)-O(2) bond lengths are 1.08 Å. In the second Eu site, Eu(2) is bonded in a rectangular see-saw-like geometry to one Yb(1) and three equivalent O(1) atoms. All Eu(2)-O(1) bond lengths are 1.08 Å. Ta(1) is bonded in a hexagonal planar geometry to three equivalent O(1) and three equivalent O(2) atoms. All Ta(1)-O(1) bond lengths are 0.12 Å. All Ta(1)-O(2) bond lengths are 0.12 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Eu(2) and one Ta(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Eu(1) and one Ta(1) atom.