The material structure described by Ca(SnO2)2 crystallizes in the orthorhombic Pca2_1 space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. In the second Sn site, Sn(2) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form edge-sharing SnO6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Sn(1), and two equivalent Sn(2) atoms to form OCa2Sn3 square pyramids that share corners with five equivalent O(4)Ca2Sn2 tetrahedra, corners with two equivalent O(2)Ca2Sn3 trigonal bipyramids, edges with two equivalent O(1)Ca2Sn3 square pyramids,  an edgeedge with one O(4)Ca2Sn2 tetrahedra, and edges with three equivalent O(2)Ca2Sn3 trigonal bipyramids. In the second O site, O(2) is bonded to two equivalent Ca(1), one Sn(2), and two equivalent Sn(1) atoms to form distorted OCa2Sn3 trigonal bipyramids that share corners with two equivalent O(1)Ca2Sn3 square pyramids, corners with five equivalent O(4)Ca2Sn2 tetrahedra, edges with three equivalent O(1)Ca2Sn3 square pyramids,  an edgeedge with one O(4)Ca2Sn2 tetrahedra, and edges with two equivalent O(2)Ca2Sn3 trigonal bipyramids. In the third O site, O(3) is bonded in a distorted water-like geometry to two equivalent Ca(1), two equivalent Sn(1), and two equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded to two equivalent Ca(1), one Sn(1), and one Sn(2) atom to form OCa2Sn2 tetrahedra that share corners with five equivalent O(1)Ca2Sn3 square pyramids, corners with two equivalent O(4)Ca2Sn2 tetrahedra, corners with five equivalent O(2)Ca2Sn3 trigonal bipyramids,  an edgeedge with one O(1)Ca2Sn3 square pyramid, and  an edgeedge with one O(2)Ca2Sn3 trigonal bipyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.237
_cell_length_b   10.858
_cell_length_c   11.451
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   402.481
_cell_formula_units_Z   4
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  0.263  0.751  0.643  1.0
  Ca  Ca1  1  0.263  0.251  0.857  1.0
  Ca  Ca2  1  0.737  0.751  0.143  1.0
  Ca  Ca3  1  0.737  0.251  0.357  1.0
  Sn  Sn4  1  0.760  0.582  0.891  1.0
  Sn  Sn5  1  0.760  0.082  0.609  1.0
  Sn  Sn6  1  0.240  0.082  0.109  1.0
  Sn  Sn7  1  0.754  0.428  0.620  1.0
  Sn  Sn8  1  0.246  0.428  0.120  1.0
  Sn  Sn9  1  0.754  0.928  0.880  1.0
  Sn  Sn10  1  0.246  0.928  0.380  1.0
  Sn  Sn11  1  0.240  0.582  0.391  1.0
  O  O12  1  0.256  0.876  0.001  1.0
  O  O13  1  0.755  0.109  0.958  1.0
  O  O14  1  0.255  0.990  0.778  1.0
  O  O15  1  0.744  0.876  0.501  1.0
  O  O16  1  0.755  0.609  0.542  1.0
  O  O17  1  0.761  0.264  0.712  1.0
  O  O18  1  0.245  0.109  0.458  1.0
  O  O19  1  0.239  0.264  0.212  1.0
  O  O20  1  0.255  0.490  0.722  1.0
  O  O21  1  0.745  0.990  0.278  1.0
  O  O22  1  0.245  0.609  0.042  1.0
  O  O23  1  0.239  0.764  0.288  1.0
  O  O24  1  0.761  0.764  0.788  1.0
  O  O25  1  0.745  0.490  0.222  1.0
  O  O26  1  0.256  0.376  0.499  1.0
  O  O27  1  0.744  0.376  0.999  1.0
[/CIF]
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The material structure described by Ca(SnO2)2 crystallizes in the orthorhombic Pca2_1 space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. In the second Sn site, Sn(2) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form edge-sharing SnO6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Sn(1), and two equivalent Sn(2) atoms to form OCa2Sn3 square pyramids that share corners with five equivalent O(4)Ca2Sn2 tetrahedra, corners with two equivalent O(2)Ca2Sn3 trigonal bipyramids, edges with two equivalent O(1)Ca2Sn3 square pyramids,  an edgeedge with one O(4)Ca2Sn2 tetrahedra, and edges with three equivalent O(2)Ca2Sn3 trigonal bipyramids. In the second O site, O(2) is bonded to two equivalent Ca(1), one Sn(2), and two equivalent Sn(1) atoms to form distorted OCa2Sn3 trigonal bipyramids that share corners with two equivalent O(1)Ca2Sn3 square pyramids, corners with five equivalent O(4)Ca2Sn2 tetrahedra, edges with three equivalent O(1)Ca2Sn3 square pyramids,  an edgeedge with one O(4)Ca2Sn2 tetrahedra, and edges with two equivalent O(2)Ca2Sn3 trigonal bipyramids. In the third O site, O(3) is bonded in a distorted water-like geometry to two equivalent Ca(1), two equivalent Sn(1), and two equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded to two equivalent Ca(1), one Sn(1), and one Sn(2) atom to form OCa2Sn2 tetrahedra that share corners with five equivalent O(1)Ca2Sn3 square pyramids, corners with two equivalent O(4)Ca2Sn2 tetrahedra, corners with five equivalent O(2)Ca2Sn3 trigonal bipyramids,  an edgeedge with one O(1)Ca2Sn3 square pyramid, and  an edgeedge with one O(2)Ca2Sn3 trigonal bipyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.237
_cell_length_b   10.858
_cell_length_c   11.451
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   402.481
_cell_formula_units_Z   4
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  0.263  0.751  0.643  1.0
  Ca  Ca1  1  0.263  0.251  0.857  1.0
  Ca  Ca2  1  0.737  0.751  0.143  1.0
  Ca  Ca3  1  0.737  0.251  0.357  1.0
  Sn  Sn4  1  0.760  0.582  0.891  1.0
  Sn  Sn5  1  0.760  0.082  0.609  1.0
  Sn  Sn6  1  0.240  0.082  0.109  1.0
  Sn  Sn7  1  0.754  0.428  0.620  1.0
  Sn  Sn8  1  0.246  0.428  0.120  1.0
  Sn  Sn9  1  0.754  0.928  0.880  1.0
  Sn  Sn10  1  0.246  0.928  0.380  1.0
  Sn  Sn11  1  0.240  0.582  0.391  1.0
  O  O12  1  0.256  0.876  0.001  1.0
  O  O13  1  0.755  0.109  0.958  1.0
  O  O14  1  0.255  0.990  0.778  1.0
  O  O15  1  0.744  0.876  0.501  1.0
  O  O16  1  0.755  0.609  0.542  1.0
  O  O17  1  0.761  0.264  0.712  1.0
  O  O18  1  0.245  0.109  0.458  1.0
  O  O19  1  0.239  0.264  0.212  1.0
  O  O20  1  0.255  0.490  0.722  1.0
  O  O21  1  0.745  0.990  0.278  1.0
  O  O22  1  0.245  0.609  0.042  1.0
  O  O23  1  0.239  0.764  0.288  1.0
  O  O24  1  0.761  0.764  0.788  1.0
  O  O25  1  0.745  0.490  0.222  1.0
  O  O26  1  0.256  0.376  0.499  1.0
  O  O27  1  0.744  0.376  0.999  1.0
[/CIF]
.