The compound described by Sm(ZnAl)2 crystallizes in the tetragonal I4/mmm space group. Sm(1) is bonded in a 16-coordinate geometry to eight equivalent Zn(1) and eight equivalent Al(1) atoms. Zn(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), one Zn(1), and four equivalent Al(1) atoms. Al(1) is bonded to four equivalent Sm(1), four equivalent Zn(1), and four equivalent Al(1) atoms to form a mixture of distorted face, corner, and edge-sharing AlSm4Al4Zn4 cuboctahedra. is represented by the CIF file [CIF]
data_Sm(AlZn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.141
_cell_length_b   4.141
_cell_length_c   6.157
_cell_angle_alpha   109.531
_cell_angle_beta   109.531
_cell_angle_gamma   90.144
_symmetry_Int_Tables_number   1
_cell_volume   93.013
_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
  Al  Al1  1  0.250  0.750  0.500  1.0
  Al  Al2  1  0.750  0.250  0.500  1.0
  Zn  Zn3  1  0.610  0.610  0.221  1.0
  Zn  Zn4  1  0.390  0.390  0.779  1.0
[/CIF]
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The compound described by Sm(ZnAl)2 crystallizes in the tetragonal I4/mmm space group. Sm(1) is bonded in a 16-coordinate geometry to eight equivalent Zn(1) and eight equivalent Al(1) atoms. Zn(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), one Zn(1), and four equivalent Al(1) atoms. Al(1) is bonded to four equivalent Sm(1), four equivalent Zn(1), and four equivalent Al(1) atoms to form a mixture of distorted face, corner, and edge-sharing AlSm4Al4Zn4 cuboctahedra. is represented by the CIF file [CIF]
data_Sm(AlZn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.141
_cell_length_b   4.141
_cell_length_c   6.157
_cell_angle_alpha   109.531
_cell_angle_beta   109.531
_cell_angle_gamma   90.144
_symmetry_Int_Tables_number   1
_cell_volume   93.013
_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
  Al  Al1  1  0.250  0.750  0.500  1.0
  Al  Al2  1  0.750  0.250  0.500  1.0
  Zn  Zn3  1  0.610  0.610  0.221  1.0
  Zn  Zn4  1  0.390  0.390  0.779  1.0
[/CIF]
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