The structure described by Cd2SiO4 crystallizes in the orthorhombic Fddd space group. Cd(1) is bonded to six equivalent O(1) atoms to form distorted CdO6 pentagonal pyramids that share corners with four equivalent Cd(1)O6 pentagonal pyramids, corners with four equivalent Si(1)O4 tetrahedra, edges with four equivalent Cd(1)O6 pentagonal pyramids, and  an edgeedge with one Si(1)O4 tetrahedra. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Cd(1)O6 pentagonal pyramids and edges with two equivalent Cd(1)O6 pentagonal pyramids. O(1) is bonded in a 4-coordinate geometry to three equivalent Cd(1) and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cd2SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.766
_cell_length_b   5.766
_cell_length_c   6.678
_cell_angle_alpha   103.601
_cell_angle_beta   103.601
_cell_angle_gamma   117.084
_symmetry_Int_Tables_number   1
_cell_volume   176.438
_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
  Cd  Cd0  1  0.809  0.191  0.750  1.0
  Cd  Cd1  1  0.441  0.559  0.750  1.0
  Cd  Cd2  1  0.191  0.809  0.250  1.0
  Cd  Cd3  1  0.559  0.441  0.250  1.0
  Si  Si4  1  0.125  0.875  0.750  1.0
  Si  Si5  1  0.875  0.125  0.250  1.0
  O  O6  1  0.251  0.208  0.897  1.0
  O  O7  1  0.311  0.853  0.603  1.0
  O  O8  1  0.792  0.749  0.603  1.0
  O  O9  1  0.147  0.689  0.897  1.0
  O  O10  1  0.749  0.792  0.103  1.0
  O  O11  1  0.689  0.147  0.397  1.0
  O  O12  1  0.853  0.311  0.103  1.0
  O  O13  1  0.208  0.251  0.397  1.0
[/CIF]
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The structure described by Cd2SiO4 crystallizes in the orthorhombic Fddd space group. Cd(1) is bonded to six equivalent O(1) atoms to form distorted CdO6 pentagonal pyramids that share corners with four equivalent Cd(1)O6 pentagonal pyramids, corners with four equivalent Si(1)O4 tetrahedra, edges with four equivalent Cd(1)O6 pentagonal pyramids, and  an edgeedge with one Si(1)O4 tetrahedra. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Cd(1)O6 pentagonal pyramids and edges with two equivalent Cd(1)O6 pentagonal pyramids. O(1) is bonded in a 4-coordinate geometry to three equivalent Cd(1) and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cd2SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.766
_cell_length_b   5.766
_cell_length_c   6.678
_cell_angle_alpha   103.601
_cell_angle_beta   103.601
_cell_angle_gamma   117.084
_symmetry_Int_Tables_number   1
_cell_volume   176.438
_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
  Cd  Cd0  1  0.809  0.191  0.750  1.0
  Cd  Cd1  1  0.441  0.559  0.750  1.0
  Cd  Cd2  1  0.191  0.809  0.250  1.0
  Cd  Cd3  1  0.559  0.441  0.250  1.0
  Si  Si4  1  0.125  0.875  0.750  1.0
  Si  Si5  1  0.875  0.125  0.250  1.0
  O  O6  1  0.251  0.208  0.897  1.0
  O  O7  1  0.311  0.853  0.603  1.0
  O  O8  1  0.792  0.749  0.603  1.0
  O  O9  1  0.147  0.689  0.897  1.0
  O  O10  1  0.749  0.792  0.103  1.0
  O  O11  1  0.689  0.147  0.397  1.0
  O  O12  1  0.853  0.311  0.103  1.0
  O  O13  1  0.208  0.251  0.397  1.0
[/CIF]
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