The material structure described by Sm2Mn2Fe13Al2 crystallizes in the monoclinic C2/m space group. Sm(1) is bonded in a 19-coordinate geometry to two equivalent Mn(1), one Fe(5), two equivalent Fe(3), three equivalent Fe(1), four equivalent Fe(4), six equivalent Fe(2), and one Al(1) atom. Mn(1) is bonded in a 10-coordinate geometry to two equivalent Sm(1), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Al(1) atoms. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent Sm(1), two equivalent Mn(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), and one Al(1) atom to form a mixture of distorted edge, corner, and face-sharing FeSm3Mn2AlFe6 cuboctahedra. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to three equivalent Sm(1), one Mn(1), one Fe(1), one Fe(2), one Fe(3), one Fe(5), three equivalent Fe(4), and one Al(1) atom. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Sm(1), two equivalent Mn(1), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(4), and two equivalent Al(1) atoms. In the fourth Fe site, Fe(4) is bonded in a 12-coordinate geometry to two equivalent Sm(1), one Mn(1), one Fe(1), one Fe(3), one Fe(4), one Fe(5), three equivalent Fe(2), and two equivalent Al(1) atoms. In the fifth Fe site, Fe(5) is bonded in a 12-coordinate geometry to two equivalent Sm(1), four equivalent Fe(2), four equivalent Fe(4), and two equivalent Al(1) atoms. Al(1) is bonded in a 14-coordinate geometry to one Sm(1), two equivalent Mn(1), one Fe(1), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(4), and one Al(1) atom. is represented by the CIF card [CIF]
data_Sm2Mn2Al2Fe13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.438
_cell_length_b   6.438
_cell_length_c   6.421
_cell_angle_alpha   82.183
_cell_angle_beta   82.183
_cell_angle_gamma   82.268
_symmetry_Int_Tables_number   1
_cell_volume   259.366
_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  0.349  0.349  0.351  1.0
  Sm  Sm1  1  0.651  0.651  0.649  1.0
  Mn  Mn2  1  0.000  0.500  0.000  1.0
  Mn  Mn3  1  0.500  0.000  0.000  1.0
  Al  Al4  1  0.100  0.100  0.105  1.0
  Al  Al5  1  0.900  0.900  0.895  1.0
  Fe  Fe6  1  0.660  0.660  0.153  1.0
  Fe  Fe7  1  0.661  0.156  0.659  1.0
  Fe  Fe8  1  0.156  0.661  0.659  1.0
  Fe  Fe9  1  0.340  0.340  0.847  1.0
  Fe  Fe10  1  0.339  0.844  0.341  1.0
  Fe  Fe11  1  0.844  0.339  0.341  1.0
  Fe  Fe12  1  0.708  0.292  0.000  1.0
  Fe  Fe13  1  0.291  0.999  0.712  1.0
  Fe  Fe14  1  0.001  0.709  0.288  1.0
  Fe  Fe15  1  0.709  0.001  0.288  1.0
  Fe  Fe16  1  0.999  0.291  0.712  1.0
  Fe  Fe17  1  0.292  0.708  0.000  1.0
  Fe  Fe18  1  0.000  0.000  0.500  1.0
[/CIF]
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The material structure described by Sm2Mn2Fe13Al2 crystallizes in the monoclinic C2/m space group. Sm(1) is bonded in a 19-coordinate geometry to two equivalent Mn(1), one Fe(5), two equivalent Fe(3), three equivalent Fe(1), four equivalent Fe(4), six equivalent Fe(2), and one Al(1) atom. Mn(1) is bonded in a 10-coordinate geometry to two equivalent Sm(1), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Al(1) atoms. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent Sm(1), two equivalent Mn(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), and one Al(1) atom to form a mixture of distorted edge, corner, and face-sharing FeSm3Mn2AlFe6 cuboctahedra. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to three equivalent Sm(1), one Mn(1), one Fe(1), one Fe(2), one Fe(3), one Fe(5), three equivalent Fe(4), and one Al(1) atom. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Sm(1), two equivalent Mn(1), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(4), and two equivalent Al(1) atoms. In the fourth Fe site, Fe(4) is bonded in a 12-coordinate geometry to two equivalent Sm(1), one Mn(1), one Fe(1), one Fe(3), one Fe(4), one Fe(5), three equivalent Fe(2), and two equivalent Al(1) atoms. In the fifth Fe site, Fe(5) is bonded in a 12-coordinate geometry to two equivalent Sm(1), four equivalent Fe(2), four equivalent Fe(4), and two equivalent Al(1) atoms. Al(1) is bonded in a 14-coordinate geometry to one Sm(1), two equivalent Mn(1), one Fe(1), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(4), and one Al(1) atom. is represented by the CIF card [CIF]
data_Sm2Mn2Al2Fe13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.438
_cell_length_b   6.438
_cell_length_c   6.421
_cell_angle_alpha   82.183
_cell_angle_beta   82.183
_cell_angle_gamma   82.268
_symmetry_Int_Tables_number   1
_cell_volume   259.366
_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  0.349  0.349  0.351  1.0
  Sm  Sm1  1  0.651  0.651  0.649  1.0
  Mn  Mn2  1  0.000  0.500  0.000  1.0
  Mn  Mn3  1  0.500  0.000  0.000  1.0
  Al  Al4  1  0.100  0.100  0.105  1.0
  Al  Al5  1  0.900  0.900  0.895  1.0
  Fe  Fe6  1  0.660  0.660  0.153  1.0
  Fe  Fe7  1  0.661  0.156  0.659  1.0
  Fe  Fe8  1  0.156  0.661  0.659  1.0
  Fe  Fe9  1  0.340  0.340  0.847  1.0
  Fe  Fe10  1  0.339  0.844  0.341  1.0
  Fe  Fe11  1  0.844  0.339  0.341  1.0
  Fe  Fe12  1  0.708  0.292  0.000  1.0
  Fe  Fe13  1  0.291  0.999  0.712  1.0
  Fe  Fe14  1  0.001  0.709  0.288  1.0
  Fe  Fe15  1  0.709  0.001  0.288  1.0
  Fe  Fe16  1  0.999  0.291  0.712  1.0
  Fe  Fe17  1  0.292  0.708  0.000  1.0
  Fe  Fe18  1  0.000  0.000  0.500  1.0
[/CIF]
.