The material described by Sr2SnFeO6 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded to one O(6), one O(7), two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, and faces with four equivalent Sn(1)O6 octahedra. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra; corners with two equivalent Fe(2)O6 octahedra; corners with two Sn(1,1)O6 octahedra; and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra; corners with two equivalent Fe(2)O6 octahedra; corners with two Sn(1,1)O6 octahedra; and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the third Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra; corners with two equivalent Fe(2)O6 octahedra; corners with two Sn(1,1)O6 octahedra; and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Sn site, Sn(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(2), and one Sn(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded to four equivalent Sr(1), one Fe(1), and one Fe(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the seventh O site, O(7) is bonded to four equivalent Sr(1) and two equivalent Fe(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_Sr2FeSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.030
_cell_length_b   4.056
_cell_length_c   8.007
_cell_angle_alpha   90.028
_cell_angle_beta   89.999
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   130.888
_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
  Fe  Fe0  1  0.500  0.500  0.250  1.0
  O  O1  1  0.500  0.500  0.009  1.0
  O  O2  1  0.500  0.500  0.491  1.0
  O  O3  1  0.500  0.000  0.750  1.0
  O  O4  1  0.000  0.500  0.750  1.0
  O  O5  1  0.500  0.000  0.250  1.0
  O  O6  1  0.000  0.500  0.250  1.0
  Sn  Sn7  1  0.500  0.500  0.750  1.0
  Sr  Sr8  1  0.000  0.000  0.016  1.0
  Sr  Sr9  1  0.000  1.000  0.484  1.0
[/CIF]
.
The material described by Sr2SnFeO6 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded to one O(6), one O(7), two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, and faces with four equivalent Sn(1)O6 octahedra. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra; corners with two equivalent Fe(2)O6 octahedra; corners with two Sn(1,1)O6 octahedra; and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra; corners with two equivalent Fe(2)O6 octahedra; corners with two Sn(1,1)O6 octahedra; and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the third Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra; corners with two equivalent Fe(2)O6 octahedra; corners with two Sn(1,1)O6 octahedra; and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Sn site, Sn(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(2), and one Sn(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded to four equivalent Sr(1), one Fe(1), and one Fe(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the seventh O site, O(7) is bonded to four equivalent Sr(1) and two equivalent Fe(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_Sr2FeSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.030
_cell_length_b   4.056
_cell_length_c   8.007
_cell_angle_alpha   90.028
_cell_angle_beta   89.999
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   130.888
_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
  Fe  Fe0  1  0.500  0.500  0.250  1.0
  O  O1  1  0.500  0.500  0.009  1.0
  O  O2  1  0.500  0.500  0.491  1.0
  O  O3  1  0.500  0.000  0.750  1.0
  O  O4  1  0.000  0.500  0.750  1.0
  O  O5  1  0.500  0.000  0.250  1.0
  O  O6  1  0.000  0.500  0.250  1.0
  Sn  Sn7  1  0.500  0.500  0.750  1.0
  Sr  Sr8  1  0.000  0.000  0.016  1.0
  Sr  Sr9  1  0.000  1.000  0.484  1.0
[/CIF]
.