The material structure described by Sm4(CoB2)3 crystallizes in the trigonal R-3m space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 6-coordinate geometry to four equivalent Sm(2), three equivalent Co(1), three equivalent Co(2), and six equivalent B(1) atoms. In the second Sm site, Sm(2) is bonded in a 16-coordinate geometry to four equivalent Sm(1), three equivalent Co(1), three equivalent Co(2), and six equivalent B(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 14-coordinate geometry to six equivalent Sm(1), six equivalent Sm(2), and two equivalent Co(2) atoms. In the second Co site, Co(2) is bonded in a 13-coordinate geometry to three equivalent Sm(1), three equivalent Sm(2), one Co(1), and six equivalent B(1) atoms. B(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Co(2), and three equivalent B(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm4(CoB2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.316
_cell_length_b   5.316
_cell_length_c   8.090
_cell_angle_alpha   70.819
_cell_angle_beta   70.819
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   183.164
_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  0.744  0.744  0.768  1.0
  Sm  Sm1  1  0.256  0.256  0.232  1.0
  Sm  Sm2  1  0.590  0.590  0.231  1.0
  Sm  Sm3  1  0.410  0.410  0.769  1.0
  Co  Co4  1  0.000  0.000  0.000  1.0
  Co  Co5  1  0.886  0.886  0.341  1.0
  Co  Co6  1  0.114  0.114  0.659  1.0
  B  B7  1  0.500  0.168  0.500  1.0
  B  B8  1  0.832  0.500  0.500  1.0
  B  B9  1  0.168  0.832  0.500  1.0
  B  B10  1  0.168  0.500  0.500  1.0
  B  B11  1  0.832  0.168  0.500  1.0
  B  B12  1  0.500  0.832  0.500  1.0
[/CIF]
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The material structure described by Sm4(CoB2)3 crystallizes in the trigonal R-3m space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 6-coordinate geometry to four equivalent Sm(2), three equivalent Co(1), three equivalent Co(2), and six equivalent B(1) atoms. In the second Sm site, Sm(2) is bonded in a 16-coordinate geometry to four equivalent Sm(1), three equivalent Co(1), three equivalent Co(2), and six equivalent B(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 14-coordinate geometry to six equivalent Sm(1), six equivalent Sm(2), and two equivalent Co(2) atoms. In the second Co site, Co(2) is bonded in a 13-coordinate geometry to three equivalent Sm(1), three equivalent Sm(2), one Co(1), and six equivalent B(1) atoms. B(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Co(2), and three equivalent B(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm4(CoB2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.316
_cell_length_b   5.316
_cell_length_c   8.090
_cell_angle_alpha   70.819
_cell_angle_beta   70.819
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   183.164
_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  0.744  0.744  0.768  1.0
  Sm  Sm1  1  0.256  0.256  0.232  1.0
  Sm  Sm2  1  0.590  0.590  0.231  1.0
  Sm  Sm3  1  0.410  0.410  0.769  1.0
  Co  Co4  1  0.000  0.000  0.000  1.0
  Co  Co5  1  0.886  0.886  0.341  1.0
  Co  Co6  1  0.114  0.114  0.659  1.0
  B  B7  1  0.500  0.168  0.500  1.0
  B  B8  1  0.832  0.500  0.500  1.0
  B  B9  1  0.168  0.832  0.500  1.0
  B  B10  1  0.168  0.500  0.500  1.0
  B  B11  1  0.832  0.168  0.500  1.0
  B  B12  1  0.500  0.832  0.500  1.0
[/CIF]
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