The crystal structure described by Ca(SnO2)2 is Spinel structured and crystallizes in the orthorhombic Imma space group. Ca(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CaO4 tetrahedra that share corners with six equivalent Sn(1)O6 octahedra and corners with six equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-68°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Ca(1)O4 tetrahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. In the second Sn site, Sn(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SnO6 octahedra that share corners with six equivalent Ca(1)O4 tetrahedra, edges with two equivalent Sn(2)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Sn(1), and two equivalent Sn(2) atoms to form a mixture of distorted edge and corner-sharing OCaSn3 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one Sn(2), and two equivalent Sn(1) atoms. is represented by the CIF card [CIF]
data_Ca(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.909
_cell_length_b   6.909
_cell_length_c   6.909
_cell_angle_alpha   122.546
_cell_angle_beta   121.472
_cell_angle_gamma   86.557
_symmetry_Int_Tables_number   1
_cell_volume   225.692
_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  0.359  0.609  0.750  1.0
  Ca  Ca1  1  0.641  0.391  0.250  1.0
  Sn  Sn2  1  0.000  0.500  0.000  1.0
  Sn  Sn3  1  0.000  0.000  0.500  1.0
  Sn  Sn4  1  0.500  0.000  0.500  1.0
  Sn  Sn5  1  0.000  0.000  0.000  1.0
  O  O6  1  0.795  0.301  0.007  1.0
  O  O7  1  0.212  0.249  0.963  1.0
  O  O8  1  0.786  0.249  0.537  1.0
  O  O9  1  0.205  0.212  0.507  1.0
  O  O10  1  0.214  0.751  0.463  1.0
  O  O11  1  0.788  0.751  0.037  1.0
  O  O12  1  0.795  0.788  0.493  1.0
  O  O13  1  0.205  0.699  0.993  1.0
[/CIF]
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The crystal structure described by Ca(SnO2)2 is Spinel structured and crystallizes in the orthorhombic Imma space group. Ca(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CaO4 tetrahedra that share corners with six equivalent Sn(1)O6 octahedra and corners with six equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-68°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Ca(1)O4 tetrahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. In the second Sn site, Sn(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SnO6 octahedra that share corners with six equivalent Ca(1)O4 tetrahedra, edges with two equivalent Sn(2)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Sn(1), and two equivalent Sn(2) atoms to form a mixture of distorted edge and corner-sharing OCaSn3 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one Sn(2), and two equivalent Sn(1) atoms. is represented by the CIF card [CIF]
data_Ca(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.909
_cell_length_b   6.909
_cell_length_c   6.909
_cell_angle_alpha   122.546
_cell_angle_beta   121.472
_cell_angle_gamma   86.557
_symmetry_Int_Tables_number   1
_cell_volume   225.692
_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  0.359  0.609  0.750  1.0
  Ca  Ca1  1  0.641  0.391  0.250  1.0
  Sn  Sn2  1  0.000  0.500  0.000  1.0
  Sn  Sn3  1  0.000  0.000  0.500  1.0
  Sn  Sn4  1  0.500  0.000  0.500  1.0
  Sn  Sn5  1  0.000  0.000  0.000  1.0
  O  O6  1  0.795  0.301  0.007  1.0
  O  O7  1  0.212  0.249  0.963  1.0
  O  O8  1  0.786  0.249  0.537  1.0
  O  O9  1  0.205  0.212  0.507  1.0
  O  O10  1  0.214  0.751  0.463  1.0
  O  O11  1  0.788  0.751  0.037  1.0
  O  O12  1  0.795  0.788  0.493  1.0
  O  O13  1  0.205  0.699  0.993  1.0
[/CIF]
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