The crystal structure described by Zn2AsO5 crystallizes in the triclinic P-1 space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), two equivalent O(3), and two equivalent O(5) atoms to form ZnO5 trigonal bipyramids that share corners with three equivalent As(1)O4 tetrahedra, corners with three equivalent Zn(2)O5 trigonal bipyramids, and edges with two equivalent Zn(1)O5 trigonal bipyramids. In the second Zn site, Zn(2) is bonded to one O(1), one O(4), one O(5), and two equivalent O(2) atoms to form ZnO5 trigonal bipyramids that share corners with four equivalent As(1)O4 tetrahedra, corners with three equivalent Zn(1)O5 trigonal bipyramids, and  an edgeedge with one Zn(2)O5 trigonal bipyramid. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with three equivalent Zn(1)O5 trigonal bipyramids and corners with four equivalent Zn(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(2) and one As(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one As(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 As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one As(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Zn(2) and two equivalent Zn(1) atoms. is represented by the CIF card [CIF]
data_Zn2AsO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.723
_cell_length_b   5.889
_cell_length_c   6.832
_cell_angle_alpha   104.949
_cell_angle_beta   104.068
_cell_angle_gamma   88.331
_symmetry_Int_Tables_number   1
_cell_volume   215.656
_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  0.394  0.245  0.500  1.0
  Zn  Zn1  1  0.606  0.755  0.500  1.0
  Zn  Zn2  1  0.029  0.737  0.189  1.0
  Zn  Zn3  1  0.971  0.263  0.811  1.0
  As  As4  1  0.828  0.245  0.270  1.0
  As  As5  1  0.172  0.755  0.730  1.0
  O  O6  1  0.766  0.958  0.138  1.0
  O  O7  1  0.234  0.042  0.862  1.0
  O  O8  1  0.942  0.390  0.121  1.0
  O  O9  1  0.058  0.610  0.879  1.0
  O  O10  1  0.577  0.387  0.334  1.0
  O  O11  1  0.423  0.613  0.666  1.0
  O  O12  1  0.954  0.744  0.498  1.0
  O  O13  1  0.046  0.256  0.502  1.0
  O  O14  1  0.349  0.898  0.321  1.0
  O  O15  1  0.651  0.102  0.679  1.0
[/CIF]
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The crystal structure described by Zn2AsO5 crystallizes in the triclinic P-1 space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), two equivalent O(3), and two equivalent O(5) atoms to form ZnO5 trigonal bipyramids that share corners with three equivalent As(1)O4 tetrahedra, corners with three equivalent Zn(2)O5 trigonal bipyramids, and edges with two equivalent Zn(1)O5 trigonal bipyramids. In the second Zn site, Zn(2) is bonded to one O(1), one O(4), one O(5), and two equivalent O(2) atoms to form ZnO5 trigonal bipyramids that share corners with four equivalent As(1)O4 tetrahedra, corners with three equivalent Zn(1)O5 trigonal bipyramids, and  an edgeedge with one Zn(2)O5 trigonal bipyramid. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with three equivalent Zn(1)O5 trigonal bipyramids and corners with four equivalent Zn(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(2) and one As(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one As(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 As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one As(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Zn(2) and two equivalent Zn(1) atoms. is represented by the CIF card [CIF]
data_Zn2AsO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.723
_cell_length_b   5.889
_cell_length_c   6.832
_cell_angle_alpha   104.949
_cell_angle_beta   104.068
_cell_angle_gamma   88.331
_symmetry_Int_Tables_number   1
_cell_volume   215.656
_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  0.394  0.245  0.500  1.0
  Zn  Zn1  1  0.606  0.755  0.500  1.0
  Zn  Zn2  1  0.029  0.737  0.189  1.0
  Zn  Zn3  1  0.971  0.263  0.811  1.0
  As  As4  1  0.828  0.245  0.270  1.0
  As  As5  1  0.172  0.755  0.730  1.0
  O  O6  1  0.766  0.958  0.138  1.0
  O  O7  1  0.234  0.042  0.862  1.0
  O  O8  1  0.942  0.390  0.121  1.0
  O  O9  1  0.058  0.610  0.879  1.0
  O  O10  1  0.577  0.387  0.334  1.0
  O  O11  1  0.423  0.613  0.666  1.0
  O  O12  1  0.954  0.744  0.498  1.0
  O  O13  1  0.046  0.256  0.502  1.0
  O  O14  1  0.349  0.898  0.321  1.0
  O  O15  1  0.651  0.102  0.679  1.0
[/CIF]
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