The structure described by Sr2YCo2O7 crystallizes in the orthorhombic Imma space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. Co(1) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form distorted corner-sharing CoO5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a square co-planar geometry to four equivalent Sr(1) atoms. In the second O site, O(2) is bonded to two equivalent Y(1) and two equivalent Co(1) atoms to form a mixture of edge and corner-sharing OY2Co2 tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Y(1) and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to four equivalent Sr(1) and one Co(1) atom. is represented by the CIF card [CIF]
data_Sr2YCo2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.623
_cell_length_b   12.623
_cell_length_c   12.623
_cell_angle_alpha   155.608
_cell_angle_beta   155.339
_cell_angle_gamma   34.962
_symmetry_Int_Tables_number   1
_cell_volume   346.187
_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
  Sr  Sr0  1  0.826  0.784  0.958  1.0
  Sr  Sr1  1  0.174  0.216  0.042  1.0
  Sr  Sr2  1  0.674  0.631  0.958  1.0
  Sr  Sr3  1  0.326  0.369  0.042  1.0
  Y  Y4  1  0.500  0.500  0.000  1.0
  Y  Y5  1  0.000  0.000  0.000  1.0
  Co  Co6  1  0.417  0.927  0.510  1.0
  Co  Co7  1  0.583  0.073  0.490  1.0
  Co  Co8  1  0.083  0.593  0.510  1.0
  Co  Co9  1  0.917  0.407  0.490  1.0
  O  O10  1  0.000  0.500  0.000  1.0
  O  O11  1  0.500  0.500  0.500  1.0
  O  O12  1  0.195  0.195  0.500  1.0
  O  O13  1  0.305  0.805  0.000  1.0
  O  O14  1  0.805  0.805  0.500  1.0
  O  O15  1  0.695  0.195  0.000  1.0
  O  O16  1  0.687  0.687  0.500  1.0
  O  O17  1  0.813  0.313  0.000  1.0
  O  O18  1  0.313  0.313  0.500  1.0
  O  O19  1  0.187  0.687  0.000  1.0
  O  O20  1  0.844  0.305  0.461  1.0
  O  O21  1  0.156  0.695  0.539  1.0
  O  O22  1  0.656  0.118  0.461  1.0
  O  O23  1  0.344  0.882  0.539  1.0
[/CIF]
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The structure described by Sr2YCo2O7 crystallizes in the orthorhombic Imma space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. Co(1) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form distorted corner-sharing CoO5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a square co-planar geometry to four equivalent Sr(1) atoms. In the second O site, O(2) is bonded to two equivalent Y(1) and two equivalent Co(1) atoms to form a mixture of edge and corner-sharing OY2Co2 tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Y(1) and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to four equivalent Sr(1) and one Co(1) atom. is represented by the CIF card [CIF]
data_Sr2YCo2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.623
_cell_length_b   12.623
_cell_length_c   12.623
_cell_angle_alpha   155.608
_cell_angle_beta   155.339
_cell_angle_gamma   34.962
_symmetry_Int_Tables_number   1
_cell_volume   346.187
_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
  Sr  Sr0  1  0.826  0.784  0.958  1.0
  Sr  Sr1  1  0.174  0.216  0.042  1.0
  Sr  Sr2  1  0.674  0.631  0.958  1.0
  Sr  Sr3  1  0.326  0.369  0.042  1.0
  Y  Y4  1  0.500  0.500  0.000  1.0
  Y  Y5  1  0.000  0.000  0.000  1.0
  Co  Co6  1  0.417  0.927  0.510  1.0
  Co  Co7  1  0.583  0.073  0.490  1.0
  Co  Co8  1  0.083  0.593  0.510  1.0
  Co  Co9  1  0.917  0.407  0.490  1.0
  O  O10  1  0.000  0.500  0.000  1.0
  O  O11  1  0.500  0.500  0.500  1.0
  O  O12  1  0.195  0.195  0.500  1.0
  O  O13  1  0.305  0.805  0.000  1.0
  O  O14  1  0.805  0.805  0.500  1.0
  O  O15  1  0.695  0.195  0.000  1.0
  O  O16  1  0.687  0.687  0.500  1.0
  O  O17  1  0.813  0.313  0.000  1.0
  O  O18  1  0.313  0.313  0.500  1.0
  O  O19  1  0.187  0.687  0.000  1.0
  O  O20  1  0.844  0.305  0.461  1.0
  O  O21  1  0.156  0.695  0.539  1.0
  O  O22  1  0.656  0.118  0.461  1.0
  O  O23  1  0.344  0.882  0.539  1.0
[/CIF]
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