The structure described by Cu2SiO4 crystallizes in the tetragonal I-42m space group. Cu(1) is bonded to four equivalent O(1) atoms to form distorted CuO4 trigonal pyramids that share corners with four equivalent Si(1)O4 tetrahedra and corners with four equivalent Cu(1)O4 trigonal pyramids. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Cu(1)O4 trigonal pyramids. O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cu(1) and one Si(1) atom. is represented by the CIF file [CIF]
data_Cu2SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.088
_cell_length_b   4.803
_cell_length_c   5.088
_cell_angle_alpha   58.018
_cell_angle_beta   89.999
_cell_angle_gamma   121.979
_symmetry_Int_Tables_number   1
_cell_volume   82.366
_cell_formula_units_Z   1
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
  Cu  Cu0  1  0.500  0.000  0.500  1.0
  Cu  Cu1  1  1.000  1.000  0.000  1.0
  Si  Si2  1  0.750  0.500  0.750  1.0
  O  O3  1  0.705  0.790  0.415  1.0
  O  O4  1  0.795  0.210  0.705  1.0
  O  O5  1  0.415  0.210  0.085  1.0
  O  O6  1  0.085  0.790  0.795  1.0
[/CIF]
.
The structure described by Cu2SiO4 crystallizes in the tetragonal I-42m space group. Cu(1) is bonded to four equivalent O(1) atoms to form distorted CuO4 trigonal pyramids that share corners with four equivalent Si(1)O4 tetrahedra and corners with four equivalent Cu(1)O4 trigonal pyramids. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Cu(1)O4 trigonal pyramids. O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cu(1) and one Si(1) atom. is represented by the CIF file [CIF]
data_Cu2SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.088
_cell_length_b   4.803
_cell_length_c   5.088
_cell_angle_alpha   58.018
_cell_angle_beta   89.999
_cell_angle_gamma   121.979
_symmetry_Int_Tables_number   1
_cell_volume   82.366
_cell_formula_units_Z   1
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
  Cu  Cu0  1  0.500  0.000  0.500  1.0
  Cu  Cu1  1  1.000  1.000  0.000  1.0
  Si  Si2  1  0.750  0.500  0.750  1.0
  O  O3  1  0.705  0.790  0.415  1.0
  O  O4  1  0.795  0.210  0.705  1.0
  O  O5  1  0.415  0.210  0.085  1.0
  O  O6  1  0.085  0.790  0.795  1.0
[/CIF]
.