The structure described by Ca(SnO2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Ca(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form distorted CaO6 octahedra that share corners with six equivalent Sn(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted SnO4 tetrahedra that share corners with six equivalent Ca(1)O6 octahedra and corners with six equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-76°. In the second Sn site, Sn(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Sn(1)O4 tetrahedra, edges with two equivalent Sn(2)O6 octahedra, and edges with four equivalent Ca(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Sn(1), and one Sn(2) atom to form distorted OCa2Sn2 tetrahedra that share corners with six equivalent O(1)Ca2Sn2 tetrahedra, corners with six equivalent O(2)CaSn3 trigonal pyramids,  an edgeedge with one O(1)Ca2Sn2 tetrahedra, and edges with two equivalent O(2)CaSn3 trigonal pyramids. In the second O site, O(2) is bonded to one Ca(1), one Sn(1), and two equivalent Sn(2) atoms to form distorted OCaSn3 trigonal pyramids that share corners with six equivalent O(1)Ca2Sn2 tetrahedra, corners with six equivalent O(2)CaSn3 trigonal pyramids, edges with two equivalent O(1)Ca2Sn2 tetrahedra, and  an edgeedge with one O(2)CaSn3 trigonal pyramid. is represented by the CIF card [CIF]
data_Ca(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.778
_cell_length_b   6.778
_cell_length_c   6.778
_cell_angle_alpha   124.082
_cell_angle_beta   112.161
_cell_angle_gamma   93.578
_symmetry_Int_Tables_number   1
_cell_volume   223.135
_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
  Ca  Ca0  1  0.500  0.500  0.000  1.0
  Ca  Ca1  1  0.000  0.500  0.500  1.0
  Sn  Sn2  1  0.623  0.873  0.750  1.0
  Sn  Sn3  1  0.377  0.127  0.250  1.0
  Sn  Sn4  1  0.000  0.000  0.500  1.0
  Sn  Sn5  1  0.000  0.500  0.000  1.0
  O  O6  1  0.230  0.238  0.508  1.0
  O  O7  1  0.186  0.252  0.934  1.0
  O  O8  1  0.230  0.722  0.992  1.0
  O  O9  1  0.818  0.252  0.566  1.0
  O  O10  1  0.182  0.748  0.434  1.0
  O  O11  1  0.814  0.748  0.066  1.0
  O  O12  1  0.770  0.278  0.008  1.0
  O  O13  1  0.770  0.762  0.492  1.0
[/CIF]
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The structure described by Ca(SnO2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Ca(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form distorted CaO6 octahedra that share corners with six equivalent Sn(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted SnO4 tetrahedra that share corners with six equivalent Ca(1)O6 octahedra and corners with six equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-76°. In the second Sn site, Sn(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Sn(1)O4 tetrahedra, edges with two equivalent Sn(2)O6 octahedra, and edges with four equivalent Ca(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Sn(1), and one Sn(2) atom to form distorted OCa2Sn2 tetrahedra that share corners with six equivalent O(1)Ca2Sn2 tetrahedra, corners with six equivalent O(2)CaSn3 trigonal pyramids,  an edgeedge with one O(1)Ca2Sn2 tetrahedra, and edges with two equivalent O(2)CaSn3 trigonal pyramids. In the second O site, O(2) is bonded to one Ca(1), one Sn(1), and two equivalent Sn(2) atoms to form distorted OCaSn3 trigonal pyramids that share corners with six equivalent O(1)Ca2Sn2 tetrahedra, corners with six equivalent O(2)CaSn3 trigonal pyramids, edges with two equivalent O(1)Ca2Sn2 tetrahedra, and  an edgeedge with one O(2)CaSn3 trigonal pyramid. is represented by the CIF card [CIF]
data_Ca(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.778
_cell_length_b   6.778
_cell_length_c   6.778
_cell_angle_alpha   124.082
_cell_angle_beta   112.161
_cell_angle_gamma   93.578
_symmetry_Int_Tables_number   1
_cell_volume   223.135
_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
  Ca  Ca0  1  0.500  0.500  0.000  1.0
  Ca  Ca1  1  0.000  0.500  0.500  1.0
  Sn  Sn2  1  0.623  0.873  0.750  1.0
  Sn  Sn3  1  0.377  0.127  0.250  1.0
  Sn  Sn4  1  0.000  0.000  0.500  1.0
  Sn  Sn5  1  0.000  0.500  0.000  1.0
  O  O6  1  0.230  0.238  0.508  1.0
  O  O7  1  0.186  0.252  0.934  1.0
  O  O8  1  0.230  0.722  0.992  1.0
  O  O9  1  0.818  0.252  0.566  1.0
  O  O10  1  0.182  0.748  0.434  1.0
  O  O11  1  0.814  0.748  0.066  1.0
  O  O12  1  0.770  0.278  0.008  1.0
  O  O13  1  0.770  0.762  0.492  1.0
[/CIF]
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