The crystal structure described by CoZnSiO5 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with four equivalent Zn(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 42°. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Zn(1)O6 pentagonal pyramids, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Zn(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 42°. Zn(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form distorted ZnO6 pentagonal pyramids that share  a cornercorner with one Co(2)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Co(1)O6 octahedra,  an edgeedge with one Zn(1)O6 pentagonal pyramid, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. 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 Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Zn(1)O6 pentagonal pyramids, and  an edgeedge with one Zn(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 30-52°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Co(2), one Zn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), two equivalent Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Co(1), one Zn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(2), one Zn(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_ZnCoSiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.370
_cell_length_b   5.449
_cell_length_c   6.850
_cell_angle_alpha   106.579
_cell_angle_beta   107.289
_cell_angle_gamma   99.613
_symmetry_Int_Tables_number   1
_cell_volume   176.334
_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  0.272  0.642  0.738  1.0
  Zn  Zn1  1  0.728  0.358  0.262  1.0
  Co  Co2  1  0.000  0.000  0.500  1.0
  Co  Co3  1  0.000  0.000  0.000  1.0
  Si  Si4  1  0.665  0.359  0.751  1.0
  Si  Si5  1  0.335  0.641  0.249  1.0
  O  O6  1  0.762  0.231  0.941  1.0
  O  O7  1  0.831  0.309  0.584  1.0
  O  O8  1  0.238  0.769  0.059  1.0
  O  O9  1  0.169  0.691  0.416  1.0
  O  O10  1  0.657  0.732  0.379  1.0
  O  O11  1  0.314  0.312  0.141  1.0
  O  O12  1  0.343  0.268  0.621  1.0
  O  O13  1  0.686  0.688  0.859  1.0
  O  O14  1  0.913  0.071  0.245  1.0
  O  O15  1  0.087  0.929  0.755  1.0
[/CIF]
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The crystal structure described by CoZnSiO5 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with four equivalent Zn(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 42°. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Zn(1)O6 pentagonal pyramids, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Zn(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 42°. Zn(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form distorted ZnO6 pentagonal pyramids that share  a cornercorner with one Co(2)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Co(1)O6 octahedra,  an edgeedge with one Zn(1)O6 pentagonal pyramid, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. 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 Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Zn(1)O6 pentagonal pyramids, and  an edgeedge with one Zn(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 30-52°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Co(2), one Zn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), two equivalent Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Co(1), one Zn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(2), one Zn(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_ZnCoSiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.370
_cell_length_b   5.449
_cell_length_c   6.850
_cell_angle_alpha   106.579
_cell_angle_beta   107.289
_cell_angle_gamma   99.613
_symmetry_Int_Tables_number   1
_cell_volume   176.334
_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  0.272  0.642  0.738  1.0
  Zn  Zn1  1  0.728  0.358  0.262  1.0
  Co  Co2  1  0.000  0.000  0.500  1.0
  Co  Co3  1  0.000  0.000  0.000  1.0
  Si  Si4  1  0.665  0.359  0.751  1.0
  Si  Si5  1  0.335  0.641  0.249  1.0
  O  O6  1  0.762  0.231  0.941  1.0
  O  O7  1  0.831  0.309  0.584  1.0
  O  O8  1  0.238  0.769  0.059  1.0
  O  O9  1  0.169  0.691  0.416  1.0
  O  O10  1  0.657  0.732  0.379  1.0
  O  O11  1  0.314  0.312  0.141  1.0
  O  O12  1  0.343  0.268  0.621  1.0
  O  O13  1  0.686  0.688  0.859  1.0
  O  O14  1  0.913  0.071  0.245  1.0
  O  O15  1  0.087  0.929  0.755  1.0
[/CIF]
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