The material structure described by Sm6Co2Si3 crystallizes in the monoclinic Pm space group. There are twelve inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 5-coordinate geometry to two equivalent Co(1), one Si(3), and two equivalent Si(4) atoms. In the second Sm site, Sm(2) is bonded in a 5-coordinate geometry to one Co(2), two equivalent Co(1), and two equivalent Si(5) atoms. In the third Sm site, Sm(3) is bonded in a 5-coordinate geometry to one Co(3), two equivalent Co(1), and two equivalent Si(6) atoms. In the fourth Sm site, Sm(4) is bonded in a 5-coordinate geometry to two equivalent Co(1), two equivalent Co(2), and one Si(6) atom. In the fifth Sm site, Sm(5) is bonded in a 5-coordinate geometry to two equivalent Co(1), two equivalent Co(3), and one Si(4) atom. In the sixth Sm site, Sm(6) is bonded in a 5-coordinate geometry to two equivalent Co(1), one Si(5), and two equivalent Si(3) atoms. In the seventh Sm site, Sm(7) is bonded in a 7-coordinate geometry to one Si(3), two equivalent Si(2), two equivalent Si(5), and two equivalent Si(6) atoms. In the eighth Sm site, Sm(8) is bonded in a 7-coordinate geometry to one Co(2), two equivalent Si(2), two equivalent Si(4), and two equivalent Si(6) atoms. In the ninth Sm site, Sm(9) is bonded in a 7-coordinate geometry to one Co(3), two equivalent Si(2), two equivalent Si(4), and two equivalent Si(5) atoms. In the tenth Sm site, Sm(10) is bonded in a 7-coordinate geometry to two equivalent Co(3), one Si(6), two equivalent Si(1), and two equivalent Si(3) atoms. In the eleventh Sm site, Sm(11) is bonded in a 7-coordinate geometry to two equivalent Co(2), one Si(4), two equivalent Si(1), and two equivalent Si(3) atoms. In the twelfth Sm site, Sm(12) is bonded in a 7-coordinate geometry to two equivalent Co(2), two equivalent Co(3), one Si(5), and two equivalent Si(1) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a body-centered cubic geometry to one Sm(1), one Sm(2), one Sm(3), one Sm(4), one Sm(5), one Sm(6), and two equivalent Co(1) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Sm(2), one Sm(8), two equivalent Sm(11), two equivalent Sm(12), two equivalent Sm(4), and one Si(1) atom. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Sm(3), one Sm(9), two equivalent Sm(10), two equivalent Sm(12), two equivalent Sm(5), and one Si(1) atom. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Sm(10), two equivalent Sm(11), two equivalent Sm(12), one Co(2), one Co(3), and one Si(3) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Sm(7), two equivalent Sm(8), two equivalent Sm(9), one Si(4), one Si(5), and one Si(6) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Sm(1), one Sm(7), two equivalent Sm(10), two equivalent Sm(11), two equivalent Sm(6), and one Si(1) atom. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to one Sm(11), one Sm(5), two equivalent Sm(1), two equivalent Sm(8), two equivalent Sm(9), and one Si(2) atom. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to one Sm(12), one Sm(6), two equivalent Sm(2), two equivalent Sm(7), two equivalent Sm(9), and one Si(2) atom. In the sixth Si site, Si(6) is bonded in a 9-coordinate geometry to one Sm(10), one Sm(4), two equivalent Sm(3), two equivalent Sm(7), two equivalent Sm(8), and one Si(2) atom. is represented by the CIF card [CIF]
data_Sm6Co2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.438
_cell_length_b   11.568
_cell_length_c   11.661
_cell_angle_alpha   60.388
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   520.458
_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  0.000  0.235  0.774  1.0
  Sm  Sm1  1  0.000  0.768  0.002  1.0
  Sm  Sm2  1  0.000  0.000  0.231  1.0
  Sm  Sm3  1  0.500  0.759  0.232  1.0
  Sm  Sm4  1  0.500  0.233  0.011  1.0
  Sm  Sm5  1  0.500  0.007  0.766  1.0
  Sm  Sm6  1  0.000  0.858  0.625  1.0
  Sm  Sm7  1  0.000  0.623  0.511  1.0
  Sm  Sm8  1  0.000  0.509  0.866  1.0
  Sm  Sm9  1  0.500  0.138  0.376  1.0
  Sm  Sm10  1  0.500  0.385  0.478  1.0
  Sm  Sm11  1  0.500  0.477  0.141  1.0
  Co  Co12  1  0.750  0.000  0.000  1.0
  Co  Co13  1  0.250  0.000  0.000  1.0
  Co  Co14  1  0.000  0.562  0.285  1.0
  Co  Co15  1  0.000  0.290  0.148  1.0
  Si  Si16  1  0.000  0.337  0.327  1.0
  Si  Si17  1  0.500  0.666  0.667  1.0
  Si  Si18  1  0.000  0.151  0.561  1.0
  Si  Si19  1  0.500  0.440  0.712  1.0
  Si  Si20  1  0.500  0.714  0.846  1.0
  Si  Si21  1  0.500  0.849  0.441  1.0
[/CIF]
.
The material structure described by Sm6Co2Si3 crystallizes in the monoclinic Pm space group. There are twelve inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 5-coordinate geometry to two equivalent Co(1), one Si(3), and two equivalent Si(4) atoms. In the second Sm site, Sm(2) is bonded in a 5-coordinate geometry to one Co(2), two equivalent Co(1), and two equivalent Si(5) atoms. In the third Sm site, Sm(3) is bonded in a 5-coordinate geometry to one Co(3), two equivalent Co(1), and two equivalent Si(6) atoms. In the fourth Sm site, Sm(4) is bonded in a 5-coordinate geometry to two equivalent Co(1), two equivalent Co(2), and one Si(6) atom. In the fifth Sm site, Sm(5) is bonded in a 5-coordinate geometry to two equivalent Co(1), two equivalent Co(3), and one Si(4) atom. In the sixth Sm site, Sm(6) is bonded in a 5-coordinate geometry to two equivalent Co(1), one Si(5), and two equivalent Si(3) atoms. In the seventh Sm site, Sm(7) is bonded in a 7-coordinate geometry to one Si(3), two equivalent Si(2), two equivalent Si(5), and two equivalent Si(6) atoms. In the eighth Sm site, Sm(8) is bonded in a 7-coordinate geometry to one Co(2), two equivalent Si(2), two equivalent Si(4), and two equivalent Si(6) atoms. In the ninth Sm site, Sm(9) is bonded in a 7-coordinate geometry to one Co(3), two equivalent Si(2), two equivalent Si(4), and two equivalent Si(5) atoms. In the tenth Sm site, Sm(10) is bonded in a 7-coordinate geometry to two equivalent Co(3), one Si(6), two equivalent Si(1), and two equivalent Si(3) atoms. In the eleventh Sm site, Sm(11) is bonded in a 7-coordinate geometry to two equivalent Co(2), one Si(4), two equivalent Si(1), and two equivalent Si(3) atoms. In the twelfth Sm site, Sm(12) is bonded in a 7-coordinate geometry to two equivalent Co(2), two equivalent Co(3), one Si(5), and two equivalent Si(1) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a body-centered cubic geometry to one Sm(1), one Sm(2), one Sm(3), one Sm(4), one Sm(5), one Sm(6), and two equivalent Co(1) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Sm(2), one Sm(8), two equivalent Sm(11), two equivalent Sm(12), two equivalent Sm(4), and one Si(1) atom. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Sm(3), one Sm(9), two equivalent Sm(10), two equivalent Sm(12), two equivalent Sm(5), and one Si(1) atom. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Sm(10), two equivalent Sm(11), two equivalent Sm(12), one Co(2), one Co(3), and one Si(3) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Sm(7), two equivalent Sm(8), two equivalent Sm(9), one Si(4), one Si(5), and one Si(6) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Sm(1), one Sm(7), two equivalent Sm(10), two equivalent Sm(11), two equivalent Sm(6), and one Si(1) atom. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to one Sm(11), one Sm(5), two equivalent Sm(1), two equivalent Sm(8), two equivalent Sm(9), and one Si(2) atom. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to one Sm(12), one Sm(6), two equivalent Sm(2), two equivalent Sm(7), two equivalent Sm(9), and one Si(2) atom. In the sixth Si site, Si(6) is bonded in a 9-coordinate geometry to one Sm(10), one Sm(4), two equivalent Sm(3), two equivalent Sm(7), two equivalent Sm(8), and one Si(2) atom. is represented by the CIF card [CIF]
data_Sm6Co2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.438
_cell_length_b   11.568
_cell_length_c   11.661
_cell_angle_alpha   60.388
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   520.458
_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  0.000  0.235  0.774  1.0
  Sm  Sm1  1  0.000  0.768  0.002  1.0
  Sm  Sm2  1  0.000  0.000  0.231  1.0
  Sm  Sm3  1  0.500  0.759  0.232  1.0
  Sm  Sm4  1  0.500  0.233  0.011  1.0
  Sm  Sm5  1  0.500  0.007  0.766  1.0
  Sm  Sm6  1  0.000  0.858  0.625  1.0
  Sm  Sm7  1  0.000  0.623  0.511  1.0
  Sm  Sm8  1  0.000  0.509  0.866  1.0
  Sm  Sm9  1  0.500  0.138  0.376  1.0
  Sm  Sm10  1  0.500  0.385  0.478  1.0
  Sm  Sm11  1  0.500  0.477  0.141  1.0
  Co  Co12  1  0.750  0.000  0.000  1.0
  Co  Co13  1  0.250  0.000  0.000  1.0
  Co  Co14  1  0.000  0.562  0.285  1.0
  Co  Co15  1  0.000  0.290  0.148  1.0
  Si  Si16  1  0.000  0.337  0.327  1.0
  Si  Si17  1  0.500  0.666  0.667  1.0
  Si  Si18  1  0.000  0.151  0.561  1.0
  Si  Si19  1  0.500  0.440  0.712  1.0
  Si  Si20  1  0.500  0.714  0.846  1.0
  Si  Si21  1  0.500  0.849  0.441  1.0
[/CIF]
.