The structure described by Sm3Zn11 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to four equivalent Zn(2), four equivalent Zn(4), and eight equivalent Zn(3) atoms. In the second Sm site, Sm(2) is bonded in a 16-coordinate geometry to two equivalent Zn(1), two equivalent Zn(2), six equivalent Zn(3), and six equivalent Zn(4) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent Sm(2), four equivalent Zn(2), and four equivalent Zn(4) atoms to form face-sharing ZnSm4Zn8 cuboctahedra. In the second Zn site, Zn(2) is bonded to two equivalent Sm(1), two equivalent Sm(2), two equivalent Zn(1), two equivalent Zn(3), and four equivalent Zn(4) atoms to form a mixture of distorted face, corner, and edge-sharing ZnSm4Zn8 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 10-coordinate geometry to two equivalent Sm(1), three equivalent Sm(2), one Zn(2), one Zn(3), and three equivalent Zn(4) atoms. In the fourth Zn site, Zn(4) is bonded in a 10-coordinate geometry to one Sm(1), three equivalent Sm(2), one Zn(1), two equivalent Zn(2), and three equivalent Zn(3) atoms. is represented by the CIF file [CIF]
data_Sm3Zn11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.442
_cell_length_b   8.235
_cell_length_c   8.235
_cell_angle_alpha   66.095
_cell_angle_beta   74.352
_cell_angle_gamma   74.352
_symmetry_Int_Tables_number   1
_cell_volume   260.762
_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  0.000  1.0
  Sm  Sm1  1  0.700  0.300  0.300  1.0
  Sm  Sm2  1  0.300  0.700  0.700  1.0
  Zn  Zn3  1  0.000  0.500  0.500  1.0
  Zn  Zn4  1  0.500  0.308  0.692  1.0
  Zn  Zn5  1  0.500  0.692  0.308  1.0
  Zn  Zn6  1  0.661  0.978  0.701  1.0
  Zn  Zn7  1  0.339  0.022  0.299  1.0
  Zn  Zn8  1  0.661  0.701  0.978  1.0
  Zn  Zn9  1  0.339  0.299  0.022  1.0
  Zn  Zn10  1  0.862  0.860  0.417  1.0
  Zn  Zn11  1  0.138  0.140  0.583  1.0
  Zn  Zn12  1  0.862  0.417  0.860  1.0
  Zn  Zn13  1  0.138  0.583  0.140  1.0
[/CIF]
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The structure described by Sm3Zn11 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to four equivalent Zn(2), four equivalent Zn(4), and eight equivalent Zn(3) atoms. In the second Sm site, Sm(2) is bonded in a 16-coordinate geometry to two equivalent Zn(1), two equivalent Zn(2), six equivalent Zn(3), and six equivalent Zn(4) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent Sm(2), four equivalent Zn(2), and four equivalent Zn(4) atoms to form face-sharing ZnSm4Zn8 cuboctahedra. In the second Zn site, Zn(2) is bonded to two equivalent Sm(1), two equivalent Sm(2), two equivalent Zn(1), two equivalent Zn(3), and four equivalent Zn(4) atoms to form a mixture of distorted face, corner, and edge-sharing ZnSm4Zn8 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 10-coordinate geometry to two equivalent Sm(1), three equivalent Sm(2), one Zn(2), one Zn(3), and three equivalent Zn(4) atoms. In the fourth Zn site, Zn(4) is bonded in a 10-coordinate geometry to one Sm(1), three equivalent Sm(2), one Zn(1), two equivalent Zn(2), and three equivalent Zn(3) atoms. is represented by the CIF file [CIF]
data_Sm3Zn11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.442
_cell_length_b   8.235
_cell_length_c   8.235
_cell_angle_alpha   66.095
_cell_angle_beta   74.352
_cell_angle_gamma   74.352
_symmetry_Int_Tables_number   1
_cell_volume   260.762
_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  0.000  1.0
  Sm  Sm1  1  0.700  0.300  0.300  1.0
  Sm  Sm2  1  0.300  0.700  0.700  1.0
  Zn  Zn3  1  0.000  0.500  0.500  1.0
  Zn  Zn4  1  0.500  0.308  0.692  1.0
  Zn  Zn5  1  0.500  0.692  0.308  1.0
  Zn  Zn6  1  0.661  0.978  0.701  1.0
  Zn  Zn7  1  0.339  0.022  0.299  1.0
  Zn  Zn8  1  0.661  0.701  0.978  1.0
  Zn  Zn9  1  0.339  0.299  0.022  1.0
  Zn  Zn10  1  0.862  0.860  0.417  1.0
  Zn  Zn11  1  0.138  0.140  0.583  1.0
  Zn  Zn12  1  0.862  0.417  0.860  1.0
  Zn  Zn13  1  0.138  0.583  0.140  1.0
[/CIF]
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