The material described by ZnSn2O4 is Spinel-like structured and crystallizes in the monoclinic Cm space group. There are six inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(13), one O(3), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Zn(6)O6 octahedra, corners with two equivalent Zn(3)O6 octahedra, corners with two equivalent Sn(6)O6 octahedra, corners with three equivalent Sn(3)O6 octahedra, and corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-62°. In the second Zn site, Zn(2) is bonded to one O(5), one O(9), two equivalent O(4), and two equivalent O(7) atoms to form distorted ZnO6 octahedra that share corners with three equivalent Sn(2)O4 tetrahedra, corners with three equivalent Sn(7)O4 tetrahedra,  an edgeedge with one Zn(3)O6 octahedra,  an edgeedge with one Zn(5)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. In the third Zn site, Zn(3) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(7) atoms to form ZnO6 octahedra that share  a cornercorner with one Sn(2)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Sn(7)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. In the fourth Zn site, Zn(4) is bonded to one O(11), one O(15), two equivalent O(10), and two equivalent O(12) atoms to form distorted ZnO6 octahedra that share corners with three equivalent Sn(5)O4 tetrahedra, corners with three equivalent Sn(8)O4 tetrahedra,  an edgeedge with one Zn(5)O6 octahedra,  an edgeedge with one Zn(6)O6 octahedra, edges with two equivalent Sn(4)O6 octahedra, and edges with two equivalent Sn(6)O6 octahedra. In the fifth Zn site, Zn(5) is bonded to one O(14), one O(6), two equivalent O(12), and two equivalent O(4) atoms to form ZnO6 octahedra that share  a cornercorner with one Sn(5)O4 tetrahedra,  a cornercorner with one Sn(7)O4 tetrahedra, corners with two equivalent Sn(2)O4 tetrahedra, corners with two equivalent Sn(8)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Zn(4)O6 octahedra, and edges with four equivalent Sn(4)O6 octahedra. In the sixth Zn site, Zn(6) is bonded to one O(13), one O(18), two equivalent O(10), and two equivalent O(17) atoms to form ZnO6 octahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Sn(8)O4 tetrahedra, corners with two equivalent Sn(5)O4 tetrahedra,  an edgeedge with one Zn(4)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, and edges with four equivalent Sn(6)O6 octahedra. There are nine inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(7), and one O(8) atom to form SnO6 octahedra that share  a cornercorner with one Sn(2)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Sn(7)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, edges with two equivalent Zn(3)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. In the second Sn site, Sn(2) is bonded to one O(2), one O(9), and two equivalent O(4) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(3)O6 octahedra, corners with two equivalent Zn(5)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with three equivalent Zn(2)O6 octahedra, and corners with four equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-70°. In the third Sn site, Sn(3) is bonded to one O(16), one O(3), two equivalent O(1), and two equivalent O(17) atoms to form distorted SnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra,  an edgeedge with one Zn(3)O6 octahedra,  an edgeedge with one Zn(6)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(6)O6 octahedra. In the fourth Sn site, Sn(4) is bonded to one O(11), one O(12), one O(14), one O(4), one O(6), and one O(9) atom to form SnO6 octahedra that share  a cornercorner with one Sn(5)O4 tetrahedra,  a cornercorner with one Sn(7)O4 tetrahedra, corners with two equivalent Sn(2)O4 tetrahedra, corners with two equivalent Sn(8)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Zn(4)O6 octahedra, edges with two equivalent Zn(5)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. In the fifth Sn site, Sn(5) is bonded to one O(15), one O(6), and two equivalent O(10) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(5)O6 octahedra, corners with two equivalent Zn(6)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, corners with three equivalent Zn(4)O6 octahedra, and corners with four equivalent Sn(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-68°. In the sixth Sn site, Sn(6) is bonded to one O(10), one O(13), one O(15), one O(16), one O(17), and one O(18) atom to form SnO6 octahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Sn(8)O4 tetrahedra, corners with two equivalent Sn(5)O4 tetrahedra,  an edgeedge with one Zn(4)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, edges with two equivalent Zn(6)O6 octahedra, and edges with two equivalent Sn(6)O6 octahedra. In the seventh Sn site, Sn(7) is bonded to one O(14), one O(5), and two equivalent O(7) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(5)O6 octahedra, corners with two equivalent Zn(3)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, corners with three equivalent Zn(2)O6 octahedra, and corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-71°. In the eighth Sn site, Sn(8) is bonded to one O(11), one O(18), and two equivalent O(12) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(6)O6 octahedra, corners with two equivalent Zn(5)O6 octahedra, corners with two equivalent Sn(6)O6 octahedra, corners with three equivalent Zn(4)O6 octahedra, and corners with four equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-71°. In the ninth Sn site, Sn(9) is bonded in a 3-coordinate geometry to one O(16) and two equivalent O(17) atoms. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(3), one Sn(1), and one Sn(3) atom. In the second O site, O(2) is bonded to one Zn(3), one Sn(2), and two equivalent Sn(1) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(5)ZnSn3 tetrahedra, and corners with four equivalent O(7)Zn2Sn2 tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Zn(1), one Sn(3), and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded to one Zn(2), one Zn(5), one Sn(2), and one Sn(4) atom to form OZn2Sn2 tetrahedra that share  a cornercorner with one O(4)Zn2Sn2 tetrahedra,  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(2)ZnSn3 tetrahedra,  a cornercorner with one O(5)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(14)ZnSn3 tetrahedra, corners with three equivalent O(12)Zn2Sn2 tetrahedra,  an edgeedge with one O(4)Zn2Sn2 tetrahedra,  an edgeedge with one O(6)ZnSn3 tetrahedra, and  an edgeedge with one O(9)ZnSn3 tetrahedra. In the fifth O site, O(5) is bonded to one Zn(2), one Sn(7), and two equivalent Sn(1) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(14)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(2)ZnSn3 tetrahedra, and edges with two equivalent O(7)Zn2Sn2 tetrahedra. In the sixth O site, O(6) is bonded to one Zn(5), one Sn(5), and two equivalent Sn(4) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(15)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(11)ZnSn3 tetrahedra, corners with three equivalent O(14)ZnSn3 tetrahedra, corners with four equivalent O(12)Zn2Sn2 tetrahedra,  an edgeedge with one O(9)ZnSn3 tetrahedra, and edges with two equivalent O(4)Zn2Sn2 tetrahedra. In the seventh O site, O(7) is bonded to one Zn(2), one Zn(3), one Sn(1), and one Sn(7) atom to form distorted OZn2Sn2 tetrahedra that share  a cornercorner with one O(7)Zn2Sn2 tetrahedra,  a cornercorner with one O(14)ZnSn3 tetrahedra,  a cornercorner with one O(5)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(2)ZnSn3 tetrahedra,  an edgeedge with one O(7)Zn2Sn2 tetrahedra, and  an edgeedge with one O(5)ZnSn3 tetrahedra. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Zn(3) and two equivalent Sn(1) atoms. In the ninth O site, O(9) is bonded to one Zn(2), one Sn(2), and two equivalent Sn(4) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(2)ZnSn3 tetrahedra,  a cornercorner with one O(5)ZnSn3 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(11)ZnSn3 tetrahedra, corners with two equivalent O(14)ZnSn3 tetrahedra,  an edgeedge with one O(6)ZnSn3 tetrahedra, and edges with two equivalent O(4)Zn2Sn2 tetrahedra. In the tenth O site, O(10) is bonded to one Zn(4), one Zn(6), one Sn(5), and one Sn(6) atom to form OZn2Sn2 tetrahedra that share  a cornercorner with one O(10)Zn2Sn2 tetrahedra,  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(15)ZnSn3 tetrahedra,  a cornercorner with one O(6)ZnSn3 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(18)ZnSn3 tetrahedra,  a cornercorner with one O(16)Sn4 trigonal pyramid, corners with three equivalent O(17)ZnSn3 trigonal pyramids,  an edgeedge with one O(10)Zn2Sn2 tetrahedra, and  an edgeedge with one O(15)ZnSn3 tetrahedra. In the eleventh O site, O(11) is bonded to one Zn(4), one Sn(8), and two equivalent Sn(4) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(15)ZnSn3 tetrahedra,  a cornercorner with one O(18)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(6)ZnSn3 tetrahedra, corners with two equivalent O(9)ZnSn3 tetrahedra,  an edgeedge with one O(14)ZnSn3 tetrahedra, and edges with two equivalent O(12)Zn2Sn2 tetrahedra. In the twelfth O site, O(12) is bonded to one Zn(4), one Zn(5), one Sn(4), and one Sn(8) atom to form OZn2Sn2 tetrahedra that share  a cornercorner with one O(12)Zn2Sn2 tetrahedra,  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(15)ZnSn3 tetrahedra,  a cornercorner with one O(18)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(6)ZnSn3 tetrahedra, corners with three equivalent O(4)Zn2Sn2 tetrahedra,  an edgeedge with one O(12)Zn2Sn2 tetrahedra,  an edgeedge with one O(11)ZnSn3 tetrahedra, and  an edgeedge with one O(14)ZnSn3 tetrahedra. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Zn(1), one Zn(6), and two equivalent Sn(6) atoms. In the fourteenth O site, O(14) is bonded to one Zn(5), one Sn(7), and two equivalent Sn(4) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(5)ZnSn3 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(9)ZnSn3 tetrahedra, corners with three equivalent O(6)ZnSn3 tetrahedra, corners with four equivalent O(4)Zn2Sn2 tetrahedra,  an edgeedge with one O(11)ZnSn3 tetrahedra, and edges with two equivalent O(12)Zn2Sn2 tetrahedra. In the fifteenth O site, O(15) is bonded to one Zn(4), one Sn(5), and two equivalent Sn(6) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(6)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(18)ZnSn3 tetrahedra, corners with two equivalent O(16)Sn4 trigonal pyramids, corners with two equivalent O(17)ZnSn3 trigonal pyramids, and edges with two equivalent O(10)Zn2Sn2 tetrahedra. In the sixteenth O site, O(16) is bonded to one Sn(3), one Sn(9), and two equivalent Sn(6) atoms to form distorted OSn4 trigonal pyramids that share corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(15)ZnSn3 tetrahedra, corners with two equivalent O(17)ZnSn3 trigonal pyramids,  an edgeedge with one O(18)ZnSn3 tetrahedra, and edges with two equivalent O(17)ZnSn3 trigonal pyramids. In the seventeenth O site, O(17) is bonded to one Zn(6), one Sn(3), one Sn(6), and one Sn(9) atom to form distorted OZnSn3 trigonal pyramids that share  a cornercorner with one O(15)ZnSn3 tetrahedra, corners with three equivalent O(10)Zn2Sn2 tetrahedra,  a cornercorner with one O(16)Sn4 trigonal pyramid,  a cornercorner with one O(17)ZnSn3 trigonal pyramid,  an edgeedge with one O(18)ZnSn3 tetrahedra,  an edgeedge with one O(16)Sn4 trigonal pyramid, and  an edgeedge with one O(17)ZnSn3 trigonal pyramid. In the eighteenth O site, O(18) is bonded to one Zn(6), one Sn(8), and two equivalent Sn(6) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(11)ZnSn3 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(15)ZnSn3 tetrahedra, corners with four equivalent O(10)Zn2Sn2 tetrahedra,  an edgeedge with one O(16)Sn4 trigonal pyramid, and edges with two equivalent O(17)ZnSn3 trigonal pyramids. is represented by the CIF file [CIF]
data_Zn(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.401
_cell_length_b   6.401
_cell_length_c   17.195
_cell_angle_alpha   88.900
_cell_angle_beta   88.900
_cell_angle_gamma   59.820
_symmetry_Int_Tables_number   1
_cell_volume   608.843
_cell_formula_units_Z   6
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  0.845  0.845  0.946  1.0
  Zn  Zn1  1  0.165  0.165  0.665  1.0
  Zn  Zn2  1  0.334  0.334  0.827  1.0
  Zn  Zn3  1  0.833  0.833  0.335  1.0
  Zn  Zn4  1  0.000  0.000  0.499  1.0
  Zn  Zn5  1  0.660  0.660  0.174  1.0
  Sn  Sn6  1  0.843  0.335  0.832  1.0
  Sn  Sn7  1  0.504  0.504  0.626  1.0
  Sn  Sn8  1  0.499  0.499  0.994  1.0
  Sn  Sn9  1  0.335  0.843  0.832  1.0
  Sn  Sn10  1  0.500  0.001  0.499  1.0
  Sn  Sn11  1  0.166  0.166  0.290  1.0
  Sn  Sn12  1  0.001  0.500  0.499  1.0
  Sn  Sn13  1  0.155  0.665  0.168  1.0
  Sn  Sn14  1  0.834  0.834  0.705  1.0
  Sn  Sn15  1  0.665  0.155  0.168  1.0
  Sn  Sn16  1  0.497  0.497  0.372  1.0
  Sn  Sn17  1  0.156  0.156  0.048  1.0
  O  O18  1  0.679  0.185  0.907  1.0
  O  O19  1  0.504  0.504  0.781  1.0
  O  O20  1  0.185  0.679  0.907  1.0
  O  O21  1  0.670  0.670  0.901  1.0
  O  O22  1  0.327  0.869  0.575  1.0
  O  O23  1  0.020  0.020  0.761  1.0
  O  O24  1  0.170  0.170  0.441  1.0
  O  O25  1  0.463  0.006  0.752  1.0
  O  O26  1  0.869  0.327  0.575  1.0
  O  O27  1  0.174  0.174  0.888  1.0
  O  O28  1  0.319  0.319  0.569  1.0
  O  O29  1  0.006  0.463  0.752  1.0
  O  O30  1  0.979  0.540  0.243  1.0
  O  O31  1  0.684  0.684  0.430  1.0
  O  O32  1  0.129  0.673  0.423  1.0
  O  O33  1  0.540  0.979  0.243  1.0
  O  O34  1  0.846  0.846  0.094  1.0
  O  O35  1  0.831  0.831  0.558  1.0
  O  O36  1  0.973  0.973  0.241  1.0
  O  O37  1  0.673  0.129  0.423  1.0
  O  O38  1  0.333  0.333  0.105  1.0
  O  O39  1  0.820  0.334  0.110  1.0
  O  O40  1  0.482  0.482  0.229  1.0
  O  O41  1  0.334  0.820  0.110  1.0
[/CIF]
.
The material described by ZnSn2O4 is Spinel-like structured and crystallizes in the monoclinic Cm space group. There are six inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(13), one O(3), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Zn(6)O6 octahedra, corners with two equivalent Zn(3)O6 octahedra, corners with two equivalent Sn(6)O6 octahedra, corners with three equivalent Sn(3)O6 octahedra, and corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-62°. In the second Zn site, Zn(2) is bonded to one O(5), one O(9), two equivalent O(4), and two equivalent O(7) atoms to form distorted ZnO6 octahedra that share corners with three equivalent Sn(2)O4 tetrahedra, corners with three equivalent Sn(7)O4 tetrahedra,  an edgeedge with one Zn(3)O6 octahedra,  an edgeedge with one Zn(5)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. In the third Zn site, Zn(3) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(7) atoms to form ZnO6 octahedra that share  a cornercorner with one Sn(2)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Sn(7)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. In the fourth Zn site, Zn(4) is bonded to one O(11), one O(15), two equivalent O(10), and two equivalent O(12) atoms to form distorted ZnO6 octahedra that share corners with three equivalent Sn(5)O4 tetrahedra, corners with three equivalent Sn(8)O4 tetrahedra,  an edgeedge with one Zn(5)O6 octahedra,  an edgeedge with one Zn(6)O6 octahedra, edges with two equivalent Sn(4)O6 octahedra, and edges with two equivalent Sn(6)O6 octahedra. In the fifth Zn site, Zn(5) is bonded to one O(14), one O(6), two equivalent O(12), and two equivalent O(4) atoms to form ZnO6 octahedra that share  a cornercorner with one Sn(5)O4 tetrahedra,  a cornercorner with one Sn(7)O4 tetrahedra, corners with two equivalent Sn(2)O4 tetrahedra, corners with two equivalent Sn(8)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Zn(4)O6 octahedra, and edges with four equivalent Sn(4)O6 octahedra. In the sixth Zn site, Zn(6) is bonded to one O(13), one O(18), two equivalent O(10), and two equivalent O(17) atoms to form ZnO6 octahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Sn(8)O4 tetrahedra, corners with two equivalent Sn(5)O4 tetrahedra,  an edgeedge with one Zn(4)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, and edges with four equivalent Sn(6)O6 octahedra. There are nine inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(7), and one O(8) atom to form SnO6 octahedra that share  a cornercorner with one Sn(2)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Sn(7)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, edges with two equivalent Zn(3)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. In the second Sn site, Sn(2) is bonded to one O(2), one O(9), and two equivalent O(4) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(3)O6 octahedra, corners with two equivalent Zn(5)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with three equivalent Zn(2)O6 octahedra, and corners with four equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-70°. In the third Sn site, Sn(3) is bonded to one O(16), one O(3), two equivalent O(1), and two equivalent O(17) atoms to form distorted SnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra,  an edgeedge with one Zn(3)O6 octahedra,  an edgeedge with one Zn(6)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(6)O6 octahedra. In the fourth Sn site, Sn(4) is bonded to one O(11), one O(12), one O(14), one O(4), one O(6), and one O(9) atom to form SnO6 octahedra that share  a cornercorner with one Sn(5)O4 tetrahedra,  a cornercorner with one Sn(7)O4 tetrahedra, corners with two equivalent Sn(2)O4 tetrahedra, corners with two equivalent Sn(8)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra,  an edgeedge with one Zn(4)O6 octahedra, edges with two equivalent Zn(5)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. In the fifth Sn site, Sn(5) is bonded to one O(15), one O(6), and two equivalent O(10) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(5)O6 octahedra, corners with two equivalent Zn(6)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, corners with three equivalent Zn(4)O6 octahedra, and corners with four equivalent Sn(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-68°. In the sixth Sn site, Sn(6) is bonded to one O(10), one O(13), one O(15), one O(16), one O(17), and one O(18) atom to form SnO6 octahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Sn(8)O4 tetrahedra, corners with two equivalent Sn(5)O4 tetrahedra,  an edgeedge with one Zn(4)O6 octahedra,  an edgeedge with one Sn(3)O6 octahedra, edges with two equivalent Zn(6)O6 octahedra, and edges with two equivalent Sn(6)O6 octahedra. In the seventh Sn site, Sn(7) is bonded to one O(14), one O(5), and two equivalent O(7) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(5)O6 octahedra, corners with two equivalent Zn(3)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, corners with three equivalent Zn(2)O6 octahedra, and corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-71°. In the eighth Sn site, Sn(8) is bonded to one O(11), one O(18), and two equivalent O(12) atoms to form SnO4 tetrahedra that share  a cornercorner with one Zn(6)O6 octahedra, corners with two equivalent Zn(5)O6 octahedra, corners with two equivalent Sn(6)O6 octahedra, corners with three equivalent Zn(4)O6 octahedra, and corners with four equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-71°. In the ninth Sn site, Sn(9) is bonded in a 3-coordinate geometry to one O(16) and two equivalent O(17) atoms. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(3), one Sn(1), and one Sn(3) atom. In the second O site, O(2) is bonded to one Zn(3), one Sn(2), and two equivalent Sn(1) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(5)ZnSn3 tetrahedra, and corners with four equivalent O(7)Zn2Sn2 tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Zn(1), one Sn(3), and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded to one Zn(2), one Zn(5), one Sn(2), and one Sn(4) atom to form OZn2Sn2 tetrahedra that share  a cornercorner with one O(4)Zn2Sn2 tetrahedra,  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(2)ZnSn3 tetrahedra,  a cornercorner with one O(5)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(14)ZnSn3 tetrahedra, corners with three equivalent O(12)Zn2Sn2 tetrahedra,  an edgeedge with one O(4)Zn2Sn2 tetrahedra,  an edgeedge with one O(6)ZnSn3 tetrahedra, and  an edgeedge with one O(9)ZnSn3 tetrahedra. In the fifth O site, O(5) is bonded to one Zn(2), one Sn(7), and two equivalent Sn(1) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(14)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(2)ZnSn3 tetrahedra, and edges with two equivalent O(7)Zn2Sn2 tetrahedra. In the sixth O site, O(6) is bonded to one Zn(5), one Sn(5), and two equivalent Sn(4) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(15)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(11)ZnSn3 tetrahedra, corners with three equivalent O(14)ZnSn3 tetrahedra, corners with four equivalent O(12)Zn2Sn2 tetrahedra,  an edgeedge with one O(9)ZnSn3 tetrahedra, and edges with two equivalent O(4)Zn2Sn2 tetrahedra. In the seventh O site, O(7) is bonded to one Zn(2), one Zn(3), one Sn(1), and one Sn(7) atom to form distorted OZn2Sn2 tetrahedra that share  a cornercorner with one O(7)Zn2Sn2 tetrahedra,  a cornercorner with one O(14)ZnSn3 tetrahedra,  a cornercorner with one O(5)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(2)ZnSn3 tetrahedra,  an edgeedge with one O(7)Zn2Sn2 tetrahedra, and  an edgeedge with one O(5)ZnSn3 tetrahedra. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Zn(3) and two equivalent Sn(1) atoms. In the ninth O site, O(9) is bonded to one Zn(2), one Sn(2), and two equivalent Sn(4) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(2)ZnSn3 tetrahedra,  a cornercorner with one O(5)ZnSn3 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(11)ZnSn3 tetrahedra, corners with two equivalent O(14)ZnSn3 tetrahedra,  an edgeedge with one O(6)ZnSn3 tetrahedra, and edges with two equivalent O(4)Zn2Sn2 tetrahedra. In the tenth O site, O(10) is bonded to one Zn(4), one Zn(6), one Sn(5), and one Sn(6) atom to form OZn2Sn2 tetrahedra that share  a cornercorner with one O(10)Zn2Sn2 tetrahedra,  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(15)ZnSn3 tetrahedra,  a cornercorner with one O(6)ZnSn3 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(18)ZnSn3 tetrahedra,  a cornercorner with one O(16)Sn4 trigonal pyramid, corners with three equivalent O(17)ZnSn3 trigonal pyramids,  an edgeedge with one O(10)Zn2Sn2 tetrahedra, and  an edgeedge with one O(15)ZnSn3 tetrahedra. In the eleventh O site, O(11) is bonded to one Zn(4), one Sn(8), and two equivalent Sn(4) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(15)ZnSn3 tetrahedra,  a cornercorner with one O(18)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(4)Zn2Sn2 tetrahedra, corners with two equivalent O(6)ZnSn3 tetrahedra, corners with two equivalent O(9)ZnSn3 tetrahedra,  an edgeedge with one O(14)ZnSn3 tetrahedra, and edges with two equivalent O(12)Zn2Sn2 tetrahedra. In the twelfth O site, O(12) is bonded to one Zn(4), one Zn(5), one Sn(4), and one Sn(8) atom to form OZn2Sn2 tetrahedra that share  a cornercorner with one O(12)Zn2Sn2 tetrahedra,  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(15)ZnSn3 tetrahedra,  a cornercorner with one O(18)ZnSn3 tetrahedra,  a cornercorner with one O(9)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(6)ZnSn3 tetrahedra, corners with three equivalent O(4)Zn2Sn2 tetrahedra,  an edgeedge with one O(12)Zn2Sn2 tetrahedra,  an edgeedge with one O(11)ZnSn3 tetrahedra, and  an edgeedge with one O(14)ZnSn3 tetrahedra. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Zn(1), one Zn(6), and two equivalent Sn(6) atoms. In the fourteenth O site, O(14) is bonded to one Zn(5), one Sn(7), and two equivalent Sn(4) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(5)ZnSn3 tetrahedra, corners with two equivalent O(7)Zn2Sn2 tetrahedra, corners with two equivalent O(9)ZnSn3 tetrahedra, corners with three equivalent O(6)ZnSn3 tetrahedra, corners with four equivalent O(4)Zn2Sn2 tetrahedra,  an edgeedge with one O(11)ZnSn3 tetrahedra, and edges with two equivalent O(12)Zn2Sn2 tetrahedra. In the fifteenth O site, O(15) is bonded to one Zn(4), one Sn(5), and two equivalent Sn(6) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(11)ZnSn3 tetrahedra,  a cornercorner with one O(6)ZnSn3 tetrahedra, corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(18)ZnSn3 tetrahedra, corners with two equivalent O(16)Sn4 trigonal pyramids, corners with two equivalent O(17)ZnSn3 trigonal pyramids, and edges with two equivalent O(10)Zn2Sn2 tetrahedra. In the sixteenth O site, O(16) is bonded to one Sn(3), one Sn(9), and two equivalent Sn(6) atoms to form distorted OSn4 trigonal pyramids that share corners with two equivalent O(10)Zn2Sn2 tetrahedra, corners with two equivalent O(15)ZnSn3 tetrahedra, corners with two equivalent O(17)ZnSn3 trigonal pyramids,  an edgeedge with one O(18)ZnSn3 tetrahedra, and edges with two equivalent O(17)ZnSn3 trigonal pyramids. In the seventeenth O site, O(17) is bonded to one Zn(6), one Sn(3), one Sn(6), and one Sn(9) atom to form distorted OZnSn3 trigonal pyramids that share  a cornercorner with one O(15)ZnSn3 tetrahedra, corners with three equivalent O(10)Zn2Sn2 tetrahedra,  a cornercorner with one O(16)Sn4 trigonal pyramid,  a cornercorner with one O(17)ZnSn3 trigonal pyramid,  an edgeedge with one O(18)ZnSn3 tetrahedra,  an edgeedge with one O(16)Sn4 trigonal pyramid, and  an edgeedge with one O(17)ZnSn3 trigonal pyramid. In the eighteenth O site, O(18) is bonded to one Zn(6), one Sn(8), and two equivalent Sn(6) atoms to form distorted OZnSn3 tetrahedra that share  a cornercorner with one O(11)ZnSn3 tetrahedra, corners with two equivalent O(12)Zn2Sn2 tetrahedra, corners with two equivalent O(15)ZnSn3 tetrahedra, corners with four equivalent O(10)Zn2Sn2 tetrahedra,  an edgeedge with one O(16)Sn4 trigonal pyramid, and edges with two equivalent O(17)ZnSn3 trigonal pyramids. is represented by the CIF file [CIF]
data_Zn(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.401
_cell_length_b   6.401
_cell_length_c   17.195
_cell_angle_alpha   88.900
_cell_angle_beta   88.900
_cell_angle_gamma   59.820
_symmetry_Int_Tables_number   1
_cell_volume   608.843
_cell_formula_units_Z   6
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  0.845  0.845  0.946  1.0
  Zn  Zn1  1  0.165  0.165  0.665  1.0
  Zn  Zn2  1  0.334  0.334  0.827  1.0
  Zn  Zn3  1  0.833  0.833  0.335  1.0
  Zn  Zn4  1  0.000  0.000  0.499  1.0
  Zn  Zn5  1  0.660  0.660  0.174  1.0
  Sn  Sn6  1  0.843  0.335  0.832  1.0
  Sn  Sn7  1  0.504  0.504  0.626  1.0
  Sn  Sn8  1  0.499  0.499  0.994  1.0
  Sn  Sn9  1  0.335  0.843  0.832  1.0
  Sn  Sn10  1  0.500  0.001  0.499  1.0
  Sn  Sn11  1  0.166  0.166  0.290  1.0
  Sn  Sn12  1  0.001  0.500  0.499  1.0
  Sn  Sn13  1  0.155  0.665  0.168  1.0
  Sn  Sn14  1  0.834  0.834  0.705  1.0
  Sn  Sn15  1  0.665  0.155  0.168  1.0
  Sn  Sn16  1  0.497  0.497  0.372  1.0
  Sn  Sn17  1  0.156  0.156  0.048  1.0
  O  O18  1  0.679  0.185  0.907  1.0
  O  O19  1  0.504  0.504  0.781  1.0
  O  O20  1  0.185  0.679  0.907  1.0
  O  O21  1  0.670  0.670  0.901  1.0
  O  O22  1  0.327  0.869  0.575  1.0
  O  O23  1  0.020  0.020  0.761  1.0
  O  O24  1  0.170  0.170  0.441  1.0
  O  O25  1  0.463  0.006  0.752  1.0
  O  O26  1  0.869  0.327  0.575  1.0
  O  O27  1  0.174  0.174  0.888  1.0
  O  O28  1  0.319  0.319  0.569  1.0
  O  O29  1  0.006  0.463  0.752  1.0
  O  O30  1  0.979  0.540  0.243  1.0
  O  O31  1  0.684  0.684  0.430  1.0
  O  O32  1  0.129  0.673  0.423  1.0
  O  O33  1  0.540  0.979  0.243  1.0
  O  O34  1  0.846  0.846  0.094  1.0
  O  O35  1  0.831  0.831  0.558  1.0
  O  O36  1  0.973  0.973  0.241  1.0
  O  O37  1  0.673  0.129  0.423  1.0
  O  O38  1  0.333  0.333  0.105  1.0
  O  O39  1  0.820  0.334  0.110  1.0
  O  O40  1  0.482  0.482  0.229  1.0
  O  O41  1  0.334  0.820  0.110  1.0
[/CIF]
.