The structure described by Sm2Co2O5 crystallizes in the orthorhombic Ima2 space group. Sm(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 21°. In the second Co site, Co(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Sm(1) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sm(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Co(2) atoms to form corner-sharing OSm2Co2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2Co2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.564
_cell_length_b   8.564
_cell_length_c   8.564
_cell_angle_alpha   142.937
_cell_angle_beta   140.689
_cell_angle_gamma   55.132
_symmetry_Int_Tables_number   1
_cell_volume   238.078
_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
  Sm  Sm0  1  0.915  0.379  0.515  1.0
  Sm  Sm1  1  0.085  0.600  0.464  1.0
  Sm  Sm2  1  0.364  0.879  0.464  1.0
  Sm  Sm3  1  0.636  0.100  0.515  1.0
  Co  Co4  1  0.000  0.008  0.008  1.0
  Co  Co5  1  0.500  0.508  0.008  1.0
  Co  Co6  1  0.690  0.712  0.902  1.0
  Co  Co7  1  0.310  0.212  0.021  1.0
  O  O8  1  0.283  0.271  0.508  1.0
  O  O9  1  0.717  0.225  0.988  1.0
  O  O10  1  0.264  0.771  0.988  1.0
  O  O11  1  0.736  0.725  0.508  1.0
  O  O12  1  0.953  0.924  0.162  1.0
  O  O13  1  0.047  0.209  0.971  1.0
  O  O14  1  0.262  0.424  0.971  1.0
  O  O15  1  0.738  0.709  0.162  1.0
  O  O16  1  0.641  0.337  0.478  1.0
  O  O17  1  0.359  0.837  0.696  1.0
[/CIF]
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The structure described by Sm2Co2O5 crystallizes in the orthorhombic Ima2 space group. Sm(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 21°. In the second Co site, Co(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Sm(1) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sm(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Co(2) atoms to form corner-sharing OSm2Co2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2Co2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.564
_cell_length_b   8.564
_cell_length_c   8.564
_cell_angle_alpha   142.937
_cell_angle_beta   140.689
_cell_angle_gamma   55.132
_symmetry_Int_Tables_number   1
_cell_volume   238.078
_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
  Sm  Sm0  1  0.915  0.379  0.515  1.0
  Sm  Sm1  1  0.085  0.600  0.464  1.0
  Sm  Sm2  1  0.364  0.879  0.464  1.0
  Sm  Sm3  1  0.636  0.100  0.515  1.0
  Co  Co4  1  0.000  0.008  0.008  1.0
  Co  Co5  1  0.500  0.508  0.008  1.0
  Co  Co6  1  0.690  0.712  0.902  1.0
  Co  Co7  1  0.310  0.212  0.021  1.0
  O  O8  1  0.283  0.271  0.508  1.0
  O  O9  1  0.717  0.225  0.988  1.0
  O  O10  1  0.264  0.771  0.988  1.0
  O  O11  1  0.736  0.725  0.508  1.0
  O  O12  1  0.953  0.924  0.162  1.0
  O  O13  1  0.047  0.209  0.971  1.0
  O  O14  1  0.262  0.424  0.971  1.0
  O  O15  1  0.738  0.709  0.162  1.0
  O  O16  1  0.641  0.337  0.478  1.0
  O  O17  1  0.359  0.837  0.696  1.0
[/CIF]
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