The material structure described by Eu2Ba2Cu2Ti2O11 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra,  a faceface with one Eu(2)O12 cuboctahedra, faces with four equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Ti(1)O6 octahedra, and faces with four equivalent Cu(1)O5 square pyramids. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a body-centered cubic geometry to eight equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded to four equivalent O(3) and eight equivalent O(2) atoms to form EuO12 cuboctahedra that share corners with four equivalent Eu(2)O12 cuboctahedra, corners with eight equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent Ti(1)O6 octahedra. Ti(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form TiO6 octahedra that share corners with five equivalent Ti(1)O6 octahedra,  a cornercorner with one Cu(1)O5 square pyramid, faces with four equivalent Ba(1)O12 cuboctahedra, and faces with four equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-9°. Cu(1) is bonded to one O(1) and four equivalent O(4) atoms to form CuO5 square pyramids that share  a cornercorner with one Ti(1)O6 octahedra, corners with four equivalent Cu(1)O5 square pyramids, and faces with four equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Ti(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing OBa4TiCu octahedra. The corner-sharing octahedral tilt angles are 13°. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Ba(1), two equivalent Eu(2), and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Eu(2) and two equivalent Ti(1) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Eu(1), and two equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2Eu2Ti2Cu2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.925
_cell_length_b   3.925
_cell_length_c   15.954
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   245.742
_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
  Ba  Ba0  1  0.000  0.000  0.762  1.0
  Ba  Ba1  1  0.000  0.000  0.238  1.0
  Eu  Eu2  1  0.000  0.000  0.000  1.0
  Eu  Eu3  1  0.000  0.000  0.500  1.0
  Ti  Ti4  1  0.500  0.500  0.625  1.0
  Ti  Ti5  1  0.500  0.500  0.375  1.0
  Cu  Cu6  1  0.500  0.500  0.110  1.0
  Cu  Cu7  1  0.500  0.500  0.890  1.0
  O  O8  1  0.500  0.500  0.743  1.0
  O  O9  1  0.500  0.000  0.615  1.0
  O  O10  1  0.000  0.500  0.615  1.0
  O  O11  1  0.000  0.500  0.385  1.0
  O  O12  1  0.500  0.500  0.500  1.0
  O  O13  1  0.500  0.500  0.257  1.0
  O  O14  1  0.000  0.500  0.096  1.0
  O  O15  1  0.000  0.500  0.904  1.0
  O  O16  1  0.500  0.000  0.904  1.0
  O  O17  1  0.500  0.000  0.385  1.0
  O  O18  1  0.500  0.000  0.096  1.0
[/CIF]
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The material structure described by Eu2Ba2Cu2Ti2O11 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra,  a faceface with one Eu(2)O12 cuboctahedra, faces with four equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Ti(1)O6 octahedra, and faces with four equivalent Cu(1)O5 square pyramids. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a body-centered cubic geometry to eight equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded to four equivalent O(3) and eight equivalent O(2) atoms to form EuO12 cuboctahedra that share corners with four equivalent Eu(2)O12 cuboctahedra, corners with eight equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent Ti(1)O6 octahedra. Ti(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form TiO6 octahedra that share corners with five equivalent Ti(1)O6 octahedra,  a cornercorner with one Cu(1)O5 square pyramid, faces with four equivalent Ba(1)O12 cuboctahedra, and faces with four equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-9°. Cu(1) is bonded to one O(1) and four equivalent O(4) atoms to form CuO5 square pyramids that share  a cornercorner with one Ti(1)O6 octahedra, corners with four equivalent Cu(1)O5 square pyramids, and faces with four equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Ti(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing OBa4TiCu octahedra. The corner-sharing octahedral tilt angles are 13°. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Ba(1), two equivalent Eu(2), and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Eu(2) and two equivalent Ti(1) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Eu(1), and two equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2Eu2Ti2Cu2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.925
_cell_length_b   3.925
_cell_length_c   15.954
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   245.742
_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
  Ba  Ba0  1  0.000  0.000  0.762  1.0
  Ba  Ba1  1  0.000  0.000  0.238  1.0
  Eu  Eu2  1  0.000  0.000  0.000  1.0
  Eu  Eu3  1  0.000  0.000  0.500  1.0
  Ti  Ti4  1  0.500  0.500  0.625  1.0
  Ti  Ti5  1  0.500  0.500  0.375  1.0
  Cu  Cu6  1  0.500  0.500  0.110  1.0
  Cu  Cu7  1  0.500  0.500  0.890  1.0
  O  O8  1  0.500  0.500  0.743  1.0
  O  O9  1  0.500  0.000  0.615  1.0
  O  O10  1  0.000  0.500  0.615  1.0
  O  O11  1  0.000  0.500  0.385  1.0
  O  O12  1  0.500  0.500  0.500  1.0
  O  O13  1  0.500  0.500  0.257  1.0
  O  O14  1  0.000  0.500  0.096  1.0
  O  O15  1  0.000  0.500  0.904  1.0
  O  O16  1  0.500  0.000  0.904  1.0
  O  O17  1  0.500  0.000  0.385  1.0
  O  O18  1  0.500  0.000  0.096  1.0
[/CIF]
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