The structure described by Sr2Co2O5 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 9-coordinate geometry to one O(1), four equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(2)O6 octahedra and corners with two equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 20°. In the second Co site, Co(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form CoO6 octahedra that share corners with four equivalent Co(2)O6 octahedra and corners with two equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 3°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Co(1) atoms to form distorted OSr2Co2 tetrahedra that share corners with eight equivalent O(2)Sr4Co2 octahedra and corners with two equivalent O(1)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 24-69°. In the second O site, O(2) is bonded to four equivalent Sr(1) and two equivalent Co(2) atoms to form distorted OSr4Co2 octahedra that share corners with two equivalent O(2)Sr4Co2 octahedra, corners with four equivalent O(1)Sr2Co2 tetrahedra, edges with two equivalent O(2)Sr4Co2 octahedra, and faces with four equivalent O(2)Sr4Co2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Co(1), and one Co(2) atom. is represented by the CIF card [CIF]
data_Sr2Co2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.330
_cell_length_b   5.408
_cell_length_c   16.235
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   467.946
_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
  Sr  Sr0  1  0.999  0.508  0.889  1.0
  Sr  Sr1  1  0.499  0.992  0.611  1.0
  Sr  Sr2  1  0.501  0.008  0.111  1.0
  Sr  Sr3  1  0.999  0.508  0.611  1.0
  Sr  Sr4  1  0.501  0.008  0.389  1.0
  Sr  Sr5  1  0.499  0.992  0.889  1.0
  Sr  Sr6  1  0.001  0.492  0.389  1.0
  Sr  Sr7  1  0.001  0.492  0.111  1.0
  Co  Co8  1  0.037  0.938  0.250  1.0
  Co  Co9  1  0.463  0.438  0.750  1.0
  Co  Co10  1  0.963  0.062  0.750  1.0
  Co  Co11  1  0.537  0.562  0.250  1.0
  Co  Co12  1  0.500  0.500  0.500  1.0
  Co  Co13  1  0.000  0.000  0.000  1.0
  Co  Co14  1  0.500  0.500  0.000  1.0
  Co  Co15  1  0.000  0.000  0.500  1.0
  O  O16  1  0.606  0.112  0.750  1.0
  O  O17  1  0.749  0.751  0.497  1.0
  O  O18  1  0.991  0.024  0.357  1.0
  O  O19  1  0.894  0.612  0.250  1.0
  O  O20  1  0.009  0.976  0.643  1.0
  O  O21  1  0.394  0.888  0.250  1.0
  O  O22  1  0.491  0.476  0.143  1.0
  O  O23  1  0.009  0.976  0.857  1.0
  O  O24  1  0.106  0.388  0.750  1.0
  O  O25  1  0.509  0.524  0.857  1.0
  O  O26  1  0.491  0.476  0.357  1.0
  O  O27  1  0.509  0.524  0.643  1.0
  O  O28  1  0.751  0.251  0.997  1.0
  O  O29  1  0.249  0.749  0.003  1.0
  O  O30  1  0.251  0.249  0.997  1.0
  O  O31  1  0.991  0.024  0.143  1.0
  O  O32  1  0.251  0.249  0.503  1.0
  O  O33  1  0.749  0.751  0.003  1.0
  O  O34  1  0.751  0.251  0.503  1.0
  O  O35  1  0.249  0.749  0.497  1.0
[/CIF]
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The structure described by Sr2Co2O5 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 9-coordinate geometry to one O(1), four equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(2)O6 octahedra and corners with two equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 20°. In the second Co site, Co(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form CoO6 octahedra that share corners with four equivalent Co(2)O6 octahedra and corners with two equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 3°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Co(1) atoms to form distorted OSr2Co2 tetrahedra that share corners with eight equivalent O(2)Sr4Co2 octahedra and corners with two equivalent O(1)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 24-69°. In the second O site, O(2) is bonded to four equivalent Sr(1) and two equivalent Co(2) atoms to form distorted OSr4Co2 octahedra that share corners with two equivalent O(2)Sr4Co2 octahedra, corners with four equivalent O(1)Sr2Co2 tetrahedra, edges with two equivalent O(2)Sr4Co2 octahedra, and faces with four equivalent O(2)Sr4Co2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Co(1), and one Co(2) atom. is represented by the CIF card [CIF]
data_Sr2Co2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.330
_cell_length_b   5.408
_cell_length_c   16.235
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   467.946
_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
  Sr  Sr0  1  0.999  0.508  0.889  1.0
  Sr  Sr1  1  0.499  0.992  0.611  1.0
  Sr  Sr2  1  0.501  0.008  0.111  1.0
  Sr  Sr3  1  0.999  0.508  0.611  1.0
  Sr  Sr4  1  0.501  0.008  0.389  1.0
  Sr  Sr5  1  0.499  0.992  0.889  1.0
  Sr  Sr6  1  0.001  0.492  0.389  1.0
  Sr  Sr7  1  0.001  0.492  0.111  1.0
  Co  Co8  1  0.037  0.938  0.250  1.0
  Co  Co9  1  0.463  0.438  0.750  1.0
  Co  Co10  1  0.963  0.062  0.750  1.0
  Co  Co11  1  0.537  0.562  0.250  1.0
  Co  Co12  1  0.500  0.500  0.500  1.0
  Co  Co13  1  0.000  0.000  0.000  1.0
  Co  Co14  1  0.500  0.500  0.000  1.0
  Co  Co15  1  0.000  0.000  0.500  1.0
  O  O16  1  0.606  0.112  0.750  1.0
  O  O17  1  0.749  0.751  0.497  1.0
  O  O18  1  0.991  0.024  0.357  1.0
  O  O19  1  0.894  0.612  0.250  1.0
  O  O20  1  0.009  0.976  0.643  1.0
  O  O21  1  0.394  0.888  0.250  1.0
  O  O22  1  0.491  0.476  0.143  1.0
  O  O23  1  0.009  0.976  0.857  1.0
  O  O24  1  0.106  0.388  0.750  1.0
  O  O25  1  0.509  0.524  0.857  1.0
  O  O26  1  0.491  0.476  0.357  1.0
  O  O27  1  0.509  0.524  0.643  1.0
  O  O28  1  0.751  0.251  0.997  1.0
  O  O29  1  0.249  0.749  0.003  1.0
  O  O30  1  0.251  0.249  0.997  1.0
  O  O31  1  0.991  0.024  0.143  1.0
  O  O32  1  0.251  0.249  0.503  1.0
  O  O33  1  0.749  0.751  0.003  1.0
  O  O34  1  0.751  0.251  0.503  1.0
  O  O35  1  0.249  0.749  0.497  1.0
[/CIF]
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