The structure described by BaZn2Sn2 crystallizes in the tetragonal P4/nmm space group. Ba(1) is bonded in a 16-coordinate geometry to four equivalent Zn(1), four equivalent Zn(2), four equivalent Sn(1), and four equivalent Sn(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Sn(1), and four equivalent Sn(2) atoms. In the second Zn site, Zn(2) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Zn(1), and four equivalent Zn(2) atoms. In the second Sn site, Sn(2) is bonded to four equivalent Ba(1) and four equivalent Zn(1) atoms to form a mixture of distorted edge and face-sharing SnBa4Zn4 tetrahedra. is represented by the CIF card [CIF]
data_Ba(ZnSn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.782
_cell_length_b   4.782
_cell_length_c   11.274
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   257.827
_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
  Ba  Ba0  1  0.750  0.750  0.759  1.0
  Ba  Ba1  1  0.250  0.250  0.241  1.0
  Zn  Zn2  1  0.750  0.750  0.365  1.0
  Zn  Zn3  1  0.250  0.250  0.635  1.0
  Zn  Zn4  1  0.250  0.750  0.000  1.0
  Zn  Zn5  1  0.750  0.250  0.000  1.0
  Sn  Sn6  1  0.250  0.250  0.874  1.0
  Sn  Sn7  1  0.750  0.750  0.126  1.0
  Sn  Sn8  1  0.250  0.750  0.500  1.0
  Sn  Sn9  1  0.750  0.250  0.500  1.0
[/CIF]
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The structure described by BaZn2Sn2 crystallizes in the tetragonal P4/nmm space group. Ba(1) is bonded in a 16-coordinate geometry to four equivalent Zn(1), four equivalent Zn(2), four equivalent Sn(1), and four equivalent Sn(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Sn(1), and four equivalent Sn(2) atoms. In the second Zn site, Zn(2) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Zn(1), and four equivalent Zn(2) atoms. In the second Sn site, Sn(2) is bonded to four equivalent Ba(1) and four equivalent Zn(1) atoms to form a mixture of distorted edge and face-sharing SnBa4Zn4 tetrahedra. is represented by the CIF card [CIF]
data_Ba(ZnSn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.782
_cell_length_b   4.782
_cell_length_c   11.274
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   257.827
_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
  Ba  Ba0  1  0.750  0.750  0.759  1.0
  Ba  Ba1  1  0.250  0.250  0.241  1.0
  Zn  Zn2  1  0.750  0.750  0.365  1.0
  Zn  Zn3  1  0.250  0.250  0.635  1.0
  Zn  Zn4  1  0.250  0.750  0.000  1.0
  Zn  Zn5  1  0.750  0.250  0.000  1.0
  Sn  Sn6  1  0.250  0.250  0.874  1.0
  Sn  Sn7  1  0.750  0.750  0.126  1.0
  Sn  Sn8  1  0.250  0.750  0.500  1.0
  Sn  Sn9  1  0.750  0.250  0.500  1.0
[/CIF]
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