The material described by Ba2EuCoCu2O7 crystallizes in the orthorhombic Pmmm space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Eu(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Co(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. Cu(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing CuO5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Eu(1), and two equivalent Cu(1) atoms. In the second O site, O(2) is bonded to four equivalent Ba(1), one Co(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing OBa4CoCu octahedra. The corner-sharing octahedral tilt angles range from 0-17°. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Eu(1), and two equivalent Cu(1) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent Ba(1) and two equivalent Co(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2EuCoCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.902
_cell_length_b   3.928
_cell_length_c   11.985
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   183.667
_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  0.500  0.500  0.185  1.0
  Ba  Ba1  1  0.500  0.500  0.815  1.0
  Eu  Eu2  1  0.500  0.500  0.500  1.0
  Co  Co3  1  0.000  0.000  0.000  1.0
  Cu  Cu4  1  0.000  0.000  0.358  1.0
  Cu  Cu5  1  0.000  0.000  0.642  1.0
  O  O6  1  0.500  0.000  0.372  1.0
  O  O7  1  0.500  0.000  0.628  1.0
  O  O8  1  0.000  0.000  0.150  1.0
  O  O9  1  0.000  0.000  0.850  1.0
  O  O10  1  0.000  0.500  0.372  1.0
  O  O11  1  0.000  0.500  0.628  1.0
  O  O12  1  0.000  0.500  0.000  1.0
[/CIF]
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The material described by Ba2EuCoCu2O7 crystallizes in the orthorhombic Pmmm space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Eu(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Co(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. Cu(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing CuO5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Eu(1), and two equivalent Cu(1) atoms. In the second O site, O(2) is bonded to four equivalent Ba(1), one Co(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing OBa4CoCu octahedra. The corner-sharing octahedral tilt angles range from 0-17°. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Eu(1), and two equivalent Cu(1) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent Ba(1) and two equivalent Co(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2EuCoCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.902
_cell_length_b   3.928
_cell_length_c   11.985
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   183.667
_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  0.500  0.500  0.185  1.0
  Ba  Ba1  1  0.500  0.500  0.815  1.0
  Eu  Eu2  1  0.500  0.500  0.500  1.0
  Co  Co3  1  0.000  0.000  0.000  1.0
  Cu  Cu4  1  0.000  0.000  0.358  1.0
  Cu  Cu5  1  0.000  0.000  0.642  1.0
  O  O6  1  0.500  0.000  0.372  1.0
  O  O7  1  0.500  0.000  0.628  1.0
  O  O8  1  0.000  0.000  0.150  1.0
  O  O9  1  0.000  0.000  0.850  1.0
  O  O10  1  0.000  0.500  0.372  1.0
  O  O11  1  0.000  0.500  0.628  1.0
  O  O12  1  0.000  0.500  0.000  1.0
[/CIF]
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