The material described by Sr2FeCoO6 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), one O(8), two equivalent O(1), two equivalent O(5), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, faces with three equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with three equivalent Co(2)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), one O(8), two equivalent O(10), two equivalent O(2), and two equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, faces with three equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Co(2)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. In the third Sr site, Sr(3) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), one O(9), two equivalent O(11), two equivalent O(3), and two equivalent O(7) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(3)O12 cuboctahedra, corners with six equivalent Sr(4)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Co(2)O6 octahedra. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), one O(9), two equivalent O(12), two equivalent O(4), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(3)O12 cuboctahedra, corners with six equivalent Sr(4)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Co(2)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(7) atom to form FeO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-3°. In the second Fe site, Fe(2) is bonded to one O(1), one O(12), one O(4), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Sr(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(3)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Co site, Co(2) is bonded to one O(1), one O(11), one O(3), one O(5), one O(7), and one O(9) atom to form CoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-4°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(1), one Fe(2), and one Co(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(2), one Fe(1), and one Co(1) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Co(2) atom to form a mixture of distorted corner and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 0-63°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(1), one Fe(2), and one Co(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(2), one Fe(1), and one Co(1) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Co(2) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Co(1) atom. In the ninth O site, O(9) is bonded to one Sr(3), one Sr(4), two equivalent Sr(1), one Fe(2), and one Co(2) atom to form a mixture of distorted face, corner, and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the tenth O site, O(10) is bonded to one Sr(3), one Sr(4), two equivalent Sr(2), one Fe(1), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Co(2) atom. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Co(1) atom to form a mixture of distorted face and corner-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 4-63°. is represented by the CIF file [CIF]
data_Sr2FeCoO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.474
_cell_length_b   5.480
_cell_length_c   5.525
_cell_angle_alpha   119.648
_cell_angle_beta   119.554
_cell_angle_gamma   90.142
_symmetry_Int_Tables_number   1
_cell_volume   118.460
_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
  Co  Co0  1  0.490  0.495  0.990  1.0
  Fe  Fe1  1  0.998  0.001  0.002  1.0
  O  O2  1  0.744  0.741  0.002  1.0
  O  O3  1  0.248  0.247  0.495  1.0
  O  O4  1  0.745  0.260  0.002  1.0
  O  O5  1  0.263  0.257  0.001  1.0
  O  O6  1  0.753  0.755  0.511  1.0
  O  O7  1  0.262  0.744  0.001  1.0
  Sr  Sr8  1  0.748  0.250  0.499  1.0
  Sr  Sr9  1  0.248  0.750  0.499  1.0
[/CIF]
.
The material described by Sr2FeCoO6 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), one O(8), two equivalent O(1), two equivalent O(5), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, faces with three equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with three equivalent Co(2)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), one O(8), two equivalent O(10), two equivalent O(2), and two equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, faces with three equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Co(2)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. In the third Sr site, Sr(3) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), one O(9), two equivalent O(11), two equivalent O(3), and two equivalent O(7) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(3)O12 cuboctahedra, corners with six equivalent Sr(4)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Co(2)O6 octahedra. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), one O(9), two equivalent O(12), two equivalent O(4), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(3)O12 cuboctahedra, corners with six equivalent Sr(4)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Co(2)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(7) atom to form FeO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-3°. In the second Fe site, Fe(2) is bonded to one O(1), one O(12), one O(4), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Sr(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(3)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Co site, Co(2) is bonded to one O(1), one O(11), one O(3), one O(5), one O(7), and one O(9) atom to form CoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-4°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(1), one Fe(2), and one Co(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(2), one Fe(1), and one Co(1) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Co(2) atom to form a mixture of distorted corner and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 0-63°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(1), one Fe(2), and one Co(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), two equivalent Sr(2), one Fe(1), and one Co(1) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Co(2) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Co(1) atom. In the ninth O site, O(9) is bonded to one Sr(3), one Sr(4), two equivalent Sr(1), one Fe(2), and one Co(2) atom to form a mixture of distorted face, corner, and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the tenth O site, O(10) is bonded to one Sr(3), one Sr(4), two equivalent Sr(2), one Fe(1), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Co(2) atom. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Co(1) atom to form a mixture of distorted face and corner-sharing OSr4FeCo octahedra. The corner-sharing octahedral tilt angles range from 4-63°. is represented by the CIF file [CIF]
data_Sr2FeCoO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.474
_cell_length_b   5.480
_cell_length_c   5.525
_cell_angle_alpha   119.648
_cell_angle_beta   119.554
_cell_angle_gamma   90.142
_symmetry_Int_Tables_number   1
_cell_volume   118.460
_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
  Co  Co0  1  0.490  0.495  0.990  1.0
  Fe  Fe1  1  0.998  0.001  0.002  1.0
  O  O2  1  0.744  0.741  0.002  1.0
  O  O3  1  0.248  0.247  0.495  1.0
  O  O4  1  0.745  0.260  0.002  1.0
  O  O5  1  0.263  0.257  0.001  1.0
  O  O6  1  0.753  0.755  0.511  1.0
  O  O7  1  0.262  0.744  0.001  1.0
  Sr  Sr8  1  0.748  0.250  0.499  1.0
  Sr  Sr9  1  0.248  0.750  0.499  1.0
[/CIF]
.