The material described by Sm4Co10Si crystallizes in the tetragonal I4_1/amd space group. Sm(1) is bonded in a 5-coordinate geometry to one Co(1), six equivalent Co(2), and one Si(1) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 2-coordinate geometry to two equivalent Sm(1), four equivalent Co(2), and two equivalent Si(1) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to three equivalent Sm(1), one Co(1), and five equivalent Co(2) atoms. Si(1) is bonded to four equivalent Sm(1) and four equivalent Co(1) atoms to form distorted corner-sharing SiSm4Co4 hexagonal bipyramids. is represented by the CIF file [CIF]
data_Sm4Co10Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.096
_cell_length_b   9.427
_cell_length_c   9.427
_cell_angle_alpha   79.374
_cell_angle_beta   64.569
_cell_angle_gamma   64.569
_symmetry_Int_Tables_number   1
_cell_volume   586.832
_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  0.441  0.218  0.782  1.0
  Sm  Sm1  1  0.441  0.782  0.218  1.0
  Sm  Sm2  1  0.473  0.718  0.718  1.0
  Sm  Sm3  1  0.809  0.718  0.282  1.0
  Sm  Sm4  1  0.809  0.282  0.718  1.0
  Sm  Sm5  1  0.909  0.282  0.282  1.0
  Sm  Sm6  1  0.777  0.782  0.782  1.0
  Sm  Sm7  1  0.341  0.218  0.218  1.0
  Co  Co8  1  0.125  0.750  0.250  1.0
  Co  Co9  1  0.125  0.250  0.750  1.0
  Co  Co10  1  0.625  0.250  0.250  1.0
  Co  Co11  1  0.125  0.750  0.750  1.0
  Co  Co12  1  0.300  0.870  0.516  1.0
  Co  Co13  1  0.686  0.130  0.484  1.0
  Co  Co14  1  0.066  0.984  0.370  1.0
  Co  Co15  1  0.950  0.984  0.630  1.0
  Co  Co16  1  0.950  0.630  0.984  1.0
  Co  Co17  1  0.420  0.016  0.630  1.0
  Co  Co18  1  0.564  0.016  0.370  1.0
  Co  Co19  1  0.564  0.370  0.016  1.0
  Co  Co20  1  0.184  0.130  0.516  1.0
  Co  Co21  1  0.184  0.516  0.130  1.0
  Co  Co22  1  0.830  0.870  0.484  1.0
  Co  Co23  1  0.830  0.484  0.870  1.0
  Co  Co24  1  0.300  0.516  0.870  1.0
  Co  Co25  1  0.686  0.484  0.130  1.0
  Co  Co26  1  0.420  0.630  0.016  1.0
  Co  Co27  1  0.066  0.370  0.984  1.0
  Si  Si28  1  0.000  0.000  0.000  1.0
  Si  Si29  1  0.250  0.500  0.500  1.0
[/CIF]
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The material described by Sm4Co10Si crystallizes in the tetragonal I4_1/amd space group. Sm(1) is bonded in a 5-coordinate geometry to one Co(1), six equivalent Co(2), and one Si(1) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 2-coordinate geometry to two equivalent Sm(1), four equivalent Co(2), and two equivalent Si(1) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to three equivalent Sm(1), one Co(1), and five equivalent Co(2) atoms. Si(1) is bonded to four equivalent Sm(1) and four equivalent Co(1) atoms to form distorted corner-sharing SiSm4Co4 hexagonal bipyramids. is represented by the CIF file [CIF]
data_Sm4Co10Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.096
_cell_length_b   9.427
_cell_length_c   9.427
_cell_angle_alpha   79.374
_cell_angle_beta   64.569
_cell_angle_gamma   64.569
_symmetry_Int_Tables_number   1
_cell_volume   586.832
_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  0.441  0.218  0.782  1.0
  Sm  Sm1  1  0.441  0.782  0.218  1.0
  Sm  Sm2  1  0.473  0.718  0.718  1.0
  Sm  Sm3  1  0.809  0.718  0.282  1.0
  Sm  Sm4  1  0.809  0.282  0.718  1.0
  Sm  Sm5  1  0.909  0.282  0.282  1.0
  Sm  Sm6  1  0.777  0.782  0.782  1.0
  Sm  Sm7  1  0.341  0.218  0.218  1.0
  Co  Co8  1  0.125  0.750  0.250  1.0
  Co  Co9  1  0.125  0.250  0.750  1.0
  Co  Co10  1  0.625  0.250  0.250  1.0
  Co  Co11  1  0.125  0.750  0.750  1.0
  Co  Co12  1  0.300  0.870  0.516  1.0
  Co  Co13  1  0.686  0.130  0.484  1.0
  Co  Co14  1  0.066  0.984  0.370  1.0
  Co  Co15  1  0.950  0.984  0.630  1.0
  Co  Co16  1  0.950  0.630  0.984  1.0
  Co  Co17  1  0.420  0.016  0.630  1.0
  Co  Co18  1  0.564  0.016  0.370  1.0
  Co  Co19  1  0.564  0.370  0.016  1.0
  Co  Co20  1  0.184  0.130  0.516  1.0
  Co  Co21  1  0.184  0.516  0.130  1.0
  Co  Co22  1  0.830  0.870  0.484  1.0
  Co  Co23  1  0.830  0.484  0.870  1.0
  Co  Co24  1  0.300  0.516  0.870  1.0
  Co  Co25  1  0.686  0.484  0.130  1.0
  Co  Co26  1  0.420  0.630  0.016  1.0
  Co  Co27  1  0.066  0.370  0.984  1.0
  Si  Si28  1  0.000  0.000  0.000  1.0
  Si  Si29  1  0.250  0.500  0.500  1.0
[/CIF]
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