The compound described by Zn3(AsO3)2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form a mixture of distorted corner and edge-sharing ZnO4 tetrahedra. In the second Zn site, Zn(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing ZnO4 tetrahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted trigonal non-coplanar geometry to one O(4) and two equivalent O(2) atoms. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one O(3) and two equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one As(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Zn(1) and one As(1) atom. In the third O site, O(1) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one As(2) atom. In the fourth O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Zn3(AsO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.137
_cell_length_b   7.830
_cell_length_c   14.388
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   691.377
_cell_formula_units_Z   4
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  0.000  0.315  0.500  1.0
  Zn  Zn1  1  0.500  0.685  0.000  1.0
  Zn  Zn2  1  0.000  0.685  0.500  1.0
  Zn  Zn3  1  0.500  0.315  0.000  1.0
  Zn  Zn4  1  0.436  0.785  0.222  1.0
  Zn  Zn5  1  0.936  0.215  0.278  1.0
  Zn  Zn6  1  0.564  0.785  0.778  1.0
  Zn  Zn7  1  0.064  0.215  0.722  1.0
  Zn  Zn8  1  0.936  0.785  0.278  1.0
  Zn  Zn9  1  0.436  0.215  0.222  1.0
  Zn  Zn10  1  0.064  0.785  0.722  1.0
  Zn  Zn11  1  0.564  0.215  0.778  1.0
  As  As12  1  0.088  0.500  0.126  1.0
  As  As13  1  0.588  0.500  0.374  1.0
  As  As14  1  0.912  0.500  0.874  1.0
  As  As15  1  0.412  0.500  0.626  1.0
  As  As16  1  0.776  0.000  0.097  1.0
  As  As17  1  0.276  0.000  0.403  1.0
  As  As18  1  0.224  0.000  0.903  1.0
  As  As19  1  0.724  0.000  0.597  1.0
  O  O20  1  0.412  0.174  0.896  1.0
  O  O21  1  0.912  0.826  0.604  1.0
  O  O22  1  0.588  0.174  0.104  1.0
  O  O23  1  0.088  0.826  0.396  1.0
  O  O24  1  0.588  0.826  0.104  1.0
  O  O25  1  0.088  0.174  0.396  1.0
  O  O26  1  0.412  0.826  0.896  1.0
  O  O27  1  0.912  0.174  0.604  1.0
  O  O28  1  0.345  0.325  0.700  1.0
  O  O29  1  0.845  0.675  0.800  1.0
  O  O30  1  0.655  0.325  0.300  1.0
  O  O31  1  0.155  0.675  0.200  1.0
  O  O32  1  0.655  0.675  0.300  1.0
  O  O33  1  0.155  0.325  0.200  1.0
  O  O34  1  0.345  0.675  0.700  1.0
  O  O35  1  0.845  0.325  0.800  1.0
  O  O36  1  0.839  0.000  0.218  1.0
  O  O37  1  0.339  0.000  0.282  1.0
  O  O38  1  0.161  0.000  0.782  1.0
  O  O39  1  0.661  0.000  0.718  1.0
  O  O40  1  0.667  0.500  0.940  1.0
  O  O41  1  0.167  0.500  0.560  1.0
  O  O42  1  0.333  0.500  0.060  1.0
  O  O43  1  0.833  0.500  0.440  1.0
[/CIF]
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The compound described by Zn3(AsO3)2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form a mixture of distorted corner and edge-sharing ZnO4 tetrahedra. In the second Zn site, Zn(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing ZnO4 tetrahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted trigonal non-coplanar geometry to one O(4) and two equivalent O(2) atoms. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one O(3) and two equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one As(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Zn(1) and one As(1) atom. In the third O site, O(1) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one As(2) atom. In the fourth O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Zn3(AsO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.137
_cell_length_b   7.830
_cell_length_c   14.388
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   691.377
_cell_formula_units_Z   4
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  0.000  0.315  0.500  1.0
  Zn  Zn1  1  0.500  0.685  0.000  1.0
  Zn  Zn2  1  0.000  0.685  0.500  1.0
  Zn  Zn3  1  0.500  0.315  0.000  1.0
  Zn  Zn4  1  0.436  0.785  0.222  1.0
  Zn  Zn5  1  0.936  0.215  0.278  1.0
  Zn  Zn6  1  0.564  0.785  0.778  1.0
  Zn  Zn7  1  0.064  0.215  0.722  1.0
  Zn  Zn8  1  0.936  0.785  0.278  1.0
  Zn  Zn9  1  0.436  0.215  0.222  1.0
  Zn  Zn10  1  0.064  0.785  0.722  1.0
  Zn  Zn11  1  0.564  0.215  0.778  1.0
  As  As12  1  0.088  0.500  0.126  1.0
  As  As13  1  0.588  0.500  0.374  1.0
  As  As14  1  0.912  0.500  0.874  1.0
  As  As15  1  0.412  0.500  0.626  1.0
  As  As16  1  0.776  0.000  0.097  1.0
  As  As17  1  0.276  0.000  0.403  1.0
  As  As18  1  0.224  0.000  0.903  1.0
  As  As19  1  0.724  0.000  0.597  1.0
  O  O20  1  0.412  0.174  0.896  1.0
  O  O21  1  0.912  0.826  0.604  1.0
  O  O22  1  0.588  0.174  0.104  1.0
  O  O23  1  0.088  0.826  0.396  1.0
  O  O24  1  0.588  0.826  0.104  1.0
  O  O25  1  0.088  0.174  0.396  1.0
  O  O26  1  0.412  0.826  0.896  1.0
  O  O27  1  0.912  0.174  0.604  1.0
  O  O28  1  0.345  0.325  0.700  1.0
  O  O29  1  0.845  0.675  0.800  1.0
  O  O30  1  0.655  0.325  0.300  1.0
  O  O31  1  0.155  0.675  0.200  1.0
  O  O32  1  0.655  0.675  0.300  1.0
  O  O33  1  0.155  0.325  0.200  1.0
  O  O34  1  0.345  0.675  0.700  1.0
  O  O35  1  0.845  0.325  0.800  1.0
  O  O36  1  0.839  0.000  0.218  1.0
  O  O37  1  0.339  0.000  0.282  1.0
  O  O38  1  0.161  0.000  0.782  1.0
  O  O39  1  0.661  0.000  0.718  1.0
  O  O40  1  0.667  0.500  0.940  1.0
  O  O41  1  0.167  0.500  0.560  1.0
  O  O42  1  0.333  0.500  0.060  1.0
  O  O43  1  0.833  0.500  0.440  1.0
[/CIF]
.