The structure described by ZnSn2O4 is Spinel-like structured and crystallizes in the trigonal R3m space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(3) and three equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-58°. In the second Zn site, Zn(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form ZnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, and edges with six equivalent Sn(2)O6 octahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2) and three equivalent O(1) atoms to form SnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-63°. In the second Sn site, Sn(2) is bonded to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, edges with two equivalent Zn(2)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Zn(2), one Sn(1), and two equivalent Sn(2) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(2)Sn4 tetrahedra, corners with two equivalent O(1)ZnSn3 tetrahedra,  an edgeedge with one O(2)Sn4 tetrahedra, and edges with two equivalent O(1)ZnSn3 tetrahedra. In the second O site, O(2) is bonded to one Sn(1) and three equivalent Sn(2) atoms to form a mixture of corner and edge-sharing OSn4 tetrahedra. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1) and three equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(2), and two equivalent Sn(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Zn(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.553
_cell_length_b   6.553
_cell_length_c   6.553
_cell_angle_alpha   60.872
_cell_angle_beta   60.872
_cell_angle_gamma   60.872
_symmetry_Int_Tables_number   1
_cell_volume   202.864
_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
  Zn  Zn0  1  0.996  0.996  0.996  1.0
  Zn  Zn1  1  0.375  0.375  0.375  1.0
  Sn  Sn2  1  0.755  0.755  0.755  1.0
  Sn  Sn3  1  0.879  0.374  0.374  1.0
  Sn  Sn4  1  0.374  0.374  0.879  1.0
  Sn  Sn5  1  0.374  0.879  0.374  1.0
  O  O6  1  0.607  0.187  0.607  1.0
  O  O7  1  0.607  0.607  0.187  1.0
  O  O8  1  0.187  0.607  0.607  1.0
  O  O9  1  0.607  0.607  0.607  1.0
  O  O10  1  0.130  0.130  0.130  1.0
  O  O11  1  0.597  0.131  0.131  1.0
  O  O12  1  0.131  0.131  0.597  1.0
  O  O13  1  0.131  0.597  0.131  1.0
[/CIF]
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The structure described by ZnSn2O4 is Spinel-like structured and crystallizes in the trigonal R3m space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(3) and three equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-58°. In the second Zn site, Zn(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form ZnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, and edges with six equivalent Sn(2)O6 octahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2) and three equivalent O(1) atoms to form SnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-63°. In the second Sn site, Sn(2) is bonded to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, edges with two equivalent Zn(2)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Zn(2), one Sn(1), and two equivalent Sn(2) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(2)Sn4 tetrahedra, corners with two equivalent O(1)ZnSn3 tetrahedra,  an edgeedge with one O(2)Sn4 tetrahedra, and edges with two equivalent O(1)ZnSn3 tetrahedra. In the second O site, O(2) is bonded to one Sn(1) and three equivalent Sn(2) atoms to form a mixture of corner and edge-sharing OSn4 tetrahedra. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1) and three equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(2), and two equivalent Sn(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Zn(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.553
_cell_length_b   6.553
_cell_length_c   6.553
_cell_angle_alpha   60.872
_cell_angle_beta   60.872
_cell_angle_gamma   60.872
_symmetry_Int_Tables_number   1
_cell_volume   202.864
_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
  Zn  Zn0  1  0.996  0.996  0.996  1.0
  Zn  Zn1  1  0.375  0.375  0.375  1.0
  Sn  Sn2  1  0.755  0.755  0.755  1.0
  Sn  Sn3  1  0.879  0.374  0.374  1.0
  Sn  Sn4  1  0.374  0.374  0.879  1.0
  Sn  Sn5  1  0.374  0.879  0.374  1.0
  O  O6  1  0.607  0.187  0.607  1.0
  O  O7  1  0.607  0.607  0.187  1.0
  O  O8  1  0.187  0.607  0.607  1.0
  O  O9  1  0.607  0.607  0.607  1.0
  O  O10  1  0.130  0.130  0.130  1.0
  O  O11  1  0.597  0.131  0.131  1.0
  O  O12  1  0.131  0.131  0.597  1.0
  O  O13  1  0.131  0.597  0.131  1.0
[/CIF]
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