The material described by Sm4Fe3Co(AsO)4 crystallizes in the tetragonal P-42m space group. Sm(1) is bonded in a 4-coordinate geometry to four equivalent As(1), one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to four equivalent As(1) atoms to form distorted FeAs4 tetrahedra that share corners with four equivalent Co(1)As4 tetrahedra and edges with four equivalent Fe(2)As4 tetrahedra. In the second Fe site, Fe(2) is bonded to four equivalent As(1) atoms to form distorted FeAs4 tetrahedra that share corners with four equivalent Fe(2)As4 tetrahedra, edges with two equivalent Fe(1)As4 tetrahedra, and edges with two equivalent Co(1)As4 tetrahedra. Co(1) is bonded to four equivalent As(1) atoms to form distorted CoAs4 tetrahedra that share corners with four equivalent Fe(1)As4 tetrahedra and edges with four equivalent Fe(2)As4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Sm(1), one Fe(1), two equivalent Fe(2), and one Co(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sm(1) atoms to form a mixture of corner and edge-sharing OSm4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Sm(1) atoms to form a mixture of corner and edge-sharing OSm4 tetrahedra. In the third O site, O(3) is bonded to four equivalent Sm(1) atoms to form a mixture of corner and edge-sharing OSm4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm4Fe3Co(AsO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.659
_cell_length_b   5.659
_cell_length_c   9.099
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   291.384
_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
  Sm  Sm0  1  0.250  0.250  0.873  1.0
  Sm  Sm1  1  0.750  0.750  0.873  1.0
  Sm  Sm2  1  0.750  0.250  0.127  1.0
  Sm  Sm3  1  0.250  0.750  0.127  1.0
  Fe  Fe4  1  0.500  0.500  0.500  1.0
  Fe  Fe5  1  0.000  0.500  0.500  1.0
  Fe  Fe6  1  0.500  0.000  0.500  1.0
  Co  Co7  1  0.000  0.000  0.500  1.0
  As  As8  1  0.245  0.245  0.324  1.0
  As  As9  1  0.755  0.755  0.324  1.0
  As  As10  1  0.755  0.245  0.676  1.0
  As  As11  1  0.245  0.755  0.676  1.0
  O  O12  1  0.000  0.000  0.000  1.0
  O  O13  1  0.500  0.500  0.000  1.0
  O  O14  1  0.000  0.500  0.000  1.0
  O  O15  1  0.500  0.000  0.000  1.0
[/CIF]
.
The material described by Sm4Fe3Co(AsO)4 crystallizes in the tetragonal P-42m space group. Sm(1) is bonded in a 4-coordinate geometry to four equivalent As(1), one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to four equivalent As(1) atoms to form distorted FeAs4 tetrahedra that share corners with four equivalent Co(1)As4 tetrahedra and edges with four equivalent Fe(2)As4 tetrahedra. In the second Fe site, Fe(2) is bonded to four equivalent As(1) atoms to form distorted FeAs4 tetrahedra that share corners with four equivalent Fe(2)As4 tetrahedra, edges with two equivalent Fe(1)As4 tetrahedra, and edges with two equivalent Co(1)As4 tetrahedra. Co(1) is bonded to four equivalent As(1) atoms to form distorted CoAs4 tetrahedra that share corners with four equivalent Fe(1)As4 tetrahedra and edges with four equivalent Fe(2)As4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Sm(1), one Fe(1), two equivalent Fe(2), and one Co(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sm(1) atoms to form a mixture of corner and edge-sharing OSm4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Sm(1) atoms to form a mixture of corner and edge-sharing OSm4 tetrahedra. In the third O site, O(3) is bonded to four equivalent Sm(1) atoms to form a mixture of corner and edge-sharing OSm4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm4Fe3Co(AsO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.659
_cell_length_b   5.659
_cell_length_c   9.099
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   291.384
_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
  Sm  Sm0  1  0.250  0.250  0.873  1.0
  Sm  Sm1  1  0.750  0.750  0.873  1.0
  Sm  Sm2  1  0.750  0.250  0.127  1.0
  Sm  Sm3  1  0.250  0.750  0.127  1.0
  Fe  Fe4  1  0.500  0.500  0.500  1.0
  Fe  Fe5  1  0.000  0.500  0.500  1.0
  Fe  Fe6  1  0.500  0.000  0.500  1.0
  Co  Co7  1  0.000  0.000  0.500  1.0
  As  As8  1  0.245  0.245  0.324  1.0
  As  As9  1  0.755  0.755  0.324  1.0
  As  As10  1  0.755  0.245  0.676  1.0
  As  As11  1  0.245  0.755  0.676  1.0
  O  O12  1  0.000  0.000  0.000  1.0
  O  O13  1  0.500  0.500  0.000  1.0
  O  O14  1  0.000  0.500  0.000  1.0
  O  O15  1  0.500  0.000  0.000  1.0
[/CIF]
.