The crystal structure described by K2Zn(SiO3)2 crystallizes in the orthorhombic C222_1 space group. K(1) is bonded in a 7-coordinate geometry to one O(3), three equivalent O(2), and three equivalent O(4) atoms. Zn(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra and corners with two equivalent Si(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent K(1), one Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent K(1) and two equivalent Si(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to three equivalent K(1), one Zn(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_K2Zn(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.805
_cell_length_b   5.805
_cell_length_c   10.568
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   113.194
_symmetry_Int_Tables_number   1
_cell_volume   327.363
_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
  K  K0  1  0.281  0.935  0.575  1.0
  K  K1  1  0.065  0.719  0.925  1.0
  K  K2  1  0.719  0.065  0.075  1.0
  K  K3  1  0.935  0.281  0.425  1.0
  Zn  Zn4  1  0.194  0.806  0.250  1.0
  Zn  Zn5  1  0.806  0.194  0.750  1.0
  Si  Si6  1  0.365  0.331  0.863  1.0
  Si  Si7  1  0.331  0.365  0.137  1.0
  Si  Si8  1  0.669  0.635  0.637  1.0
  Si  Si9  1  0.635  0.669  0.363  1.0
  O  O10  1  0.547  0.453  0.250  1.0
  O  O11  1  0.520  0.879  0.337  1.0
  O  O12  1  0.516  0.516  0.500  1.0
  O  O13  1  0.879  0.520  0.663  1.0
  O  O14  1  0.480  0.121  0.837  1.0
  O  O15  1  0.062  0.219  0.876  1.0
  O  O16  1  0.938  0.781  0.376  1.0
  O  O17  1  0.453  0.547  0.750  1.0
  O  O18  1  0.121  0.480  0.163  1.0
  O  O19  1  0.219  0.062  0.124  1.0
  O  O20  1  0.781  0.938  0.624  1.0
  O  O21  1  0.484  0.484  0.000  1.0
[/CIF]
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The crystal structure described by K2Zn(SiO3)2 crystallizes in the orthorhombic C222_1 space group. K(1) is bonded in a 7-coordinate geometry to one O(3), three equivalent O(2), and three equivalent O(4) atoms. Zn(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra and corners with two equivalent Si(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent K(1), one Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent K(1) and two equivalent Si(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to three equivalent K(1), one Zn(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_K2Zn(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.805
_cell_length_b   5.805
_cell_length_c   10.568
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   113.194
_symmetry_Int_Tables_number   1
_cell_volume   327.363
_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
  K  K0  1  0.281  0.935  0.575  1.0
  K  K1  1  0.065  0.719  0.925  1.0
  K  K2  1  0.719  0.065  0.075  1.0
  K  K3  1  0.935  0.281  0.425  1.0
  Zn  Zn4  1  0.194  0.806  0.250  1.0
  Zn  Zn5  1  0.806  0.194  0.750  1.0
  Si  Si6  1  0.365  0.331  0.863  1.0
  Si  Si7  1  0.331  0.365  0.137  1.0
  Si  Si8  1  0.669  0.635  0.637  1.0
  Si  Si9  1  0.635  0.669  0.363  1.0
  O  O10  1  0.547  0.453  0.250  1.0
  O  O11  1  0.520  0.879  0.337  1.0
  O  O12  1  0.516  0.516  0.500  1.0
  O  O13  1  0.879  0.520  0.663  1.0
  O  O14  1  0.480  0.121  0.837  1.0
  O  O15  1  0.062  0.219  0.876  1.0
  O  O16  1  0.938  0.781  0.376  1.0
  O  O17  1  0.453  0.547  0.750  1.0
  O  O18  1  0.121  0.480  0.163  1.0
  O  O19  1  0.219  0.062  0.124  1.0
  O  O20  1  0.781  0.938  0.624  1.0
  O  O21  1  0.484  0.484  0.000  1.0
[/CIF]
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