The structure described by Zn2SiO5 crystallizes in the orthorhombic Imm2 space group. Zn(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with three equivalent Si(1)O4 tetrahedra and corners with four equivalent Zn(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra and corners with six equivalent Zn(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one Si(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Zn(1) and one O(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the fifth O site, O(5) is bonded in a water-like geometry to two equivalent O(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Zn2SiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.195
_cell_length_b   7.322
_cell_length_c   7.322
_cell_angle_alpha   63.681
_cell_angle_beta   69.222
_cell_angle_gamma   69.222
_symmetry_Int_Tables_number   1
_cell_volume   226.848
_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
  Zn  Zn0  1  0.184  0.623  0.066  1.0
  Zn  Zn1  1  0.873  0.377  0.934  1.0
  Zn  Zn2  1  0.184  0.066  0.623  1.0
  Zn  Zn3  1  0.873  0.934  0.377  1.0
  Si  Si4  1  0.652  0.863  0.863  1.0
  Si  Si5  1  0.378  0.137  0.137  1.0
  O  O6  1  0.593  0.627  0.975  1.0
  O  O7  1  0.195  0.373  0.025  1.0
  O  O8  1  0.593  0.975  0.627  1.0
  O  O9  1  0.195  0.025  0.373  1.0
  O  O10  1  0.972  0.858  0.858  1.0
  O  O11  1  0.688  0.142  0.142  1.0
  O  O12  1  0.005  0.655  0.345  1.0
  O  O13  1  0.005  0.345  0.655  1.0
  O  O14  1  0.407  0.000  0.000  1.0
  O  O15  1  0.170  0.500  0.500  1.0
[/CIF]
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The structure described by Zn2SiO5 crystallizes in the orthorhombic Imm2 space group. Zn(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with three equivalent Si(1)O4 tetrahedra and corners with four equivalent Zn(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra and corners with six equivalent Zn(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one Si(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Zn(1) and one O(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the fifth O site, O(5) is bonded in a water-like geometry to two equivalent O(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Zn2SiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.195
_cell_length_b   7.322
_cell_length_c   7.322
_cell_angle_alpha   63.681
_cell_angle_beta   69.222
_cell_angle_gamma   69.222
_symmetry_Int_Tables_number   1
_cell_volume   226.848
_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
  Zn  Zn0  1  0.184  0.623  0.066  1.0
  Zn  Zn1  1  0.873  0.377  0.934  1.0
  Zn  Zn2  1  0.184  0.066  0.623  1.0
  Zn  Zn3  1  0.873  0.934  0.377  1.0
  Si  Si4  1  0.652  0.863  0.863  1.0
  Si  Si5  1  0.378  0.137  0.137  1.0
  O  O6  1  0.593  0.627  0.975  1.0
  O  O7  1  0.195  0.373  0.025  1.0
  O  O8  1  0.593  0.975  0.627  1.0
  O  O9  1  0.195  0.025  0.373  1.0
  O  O10  1  0.972  0.858  0.858  1.0
  O  O11  1  0.688  0.142  0.142  1.0
  O  O12  1  0.005  0.655  0.345  1.0
  O  O13  1  0.005  0.345  0.655  1.0
  O  O14  1  0.407  0.000  0.000  1.0
  O  O15  1  0.170  0.500  0.500  1.0
[/CIF]
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