The structure described by Sm2CoGa8 crystallizes in the tetragonal P4/mmm space group. Sm(1) is bonded to four equivalent Ga(1), four equivalent Ga(2), and four equivalent Ga(3) atoms to form a mixture of face and corner-sharing SmGa12 cuboctahedra. Co(1) is bonded in a body-centered cubic geometry to eight equivalent Ga(1) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), two equivalent Ga(3), and five equivalent Ga(1) atoms. In the second Ga site, Ga(2) is bonded in a distorted square co-planar geometry to four equivalent Sm(1) atoms. In the third Ga site, Ga(3) is bonded in a distorted rectangular see-saw-like geometry to four equivalent Sm(1) and four equivalent Ga(1) atoms. is represented by the CIF file [CIF]
data_Sm2Ga8Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.299
_cell_length_b   4.299
_cell_length_c   11.254
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   208.006
_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  0.000  0.000  0.696  1.0
  Sm  Sm1  1  0.000  0.000  0.304  1.0
  Ga  Ga2  1  0.500  0.000  0.886  1.0
  Ga  Ga3  1  0.000  0.500  0.886  1.0
  Ga  Ga4  1  0.500  0.000  0.114  1.0
  Ga  Ga5  1  0.000  0.500  0.114  1.0
  Ga  Ga6  1  0.500  0.000  0.500  1.0
  Ga  Ga7  1  0.000  0.500  0.500  1.0
  Ga  Ga8  1  0.500  0.500  0.701  1.0
  Ga  Ga9  1  0.500  0.500  0.299  1.0
  Co  Co10  1  0.000  0.000  0.000  1.0
[/CIF]
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The structure described by Sm2CoGa8 crystallizes in the tetragonal P4/mmm space group. Sm(1) is bonded to four equivalent Ga(1), four equivalent Ga(2), and four equivalent Ga(3) atoms to form a mixture of face and corner-sharing SmGa12 cuboctahedra. Co(1) is bonded in a body-centered cubic geometry to eight equivalent Ga(1) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), two equivalent Ga(3), and five equivalent Ga(1) atoms. In the second Ga site, Ga(2) is bonded in a distorted square co-planar geometry to four equivalent Sm(1) atoms. In the third Ga site, Ga(3) is bonded in a distorted rectangular see-saw-like geometry to four equivalent Sm(1) and four equivalent Ga(1) atoms. is represented by the CIF file [CIF]
data_Sm2Ga8Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.299
_cell_length_b   4.299
_cell_length_c   11.254
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   208.006
_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  0.000  0.000  0.696  1.0
  Sm  Sm1  1  0.000  0.000  0.304  1.0
  Ga  Ga2  1  0.500  0.000  0.886  1.0
  Ga  Ga3  1  0.000  0.500  0.886  1.0
  Ga  Ga4  1  0.500  0.000  0.114  1.0
  Ga  Ga5  1  0.000  0.500  0.114  1.0
  Ga  Ga6  1  0.500  0.000  0.500  1.0
  Ga  Ga7  1  0.000  0.500  0.500  1.0
  Ga  Ga8  1  0.500  0.500  0.701  1.0
  Ga  Ga9  1  0.500  0.500  0.299  1.0
  Co  Co10  1  0.000  0.000  0.000  1.0
[/CIF]
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