The compound described by AgZn3(AsO4)3 crystallizes in the monoclinic C2/c space group. Ag(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form distorted ZnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with four equivalent As(2)O4 tetrahedra, and edges with two equivalent Zn(2)O6 octahedra. In the second Zn site, Zn(2) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form ZnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with four equivalent As(2)O4 tetrahedra,  an edgeedge with one Zn(1)O6 octahedra, and  an edgeedge with one Zn(2)O6 octahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded to two equivalent O(3) and two equivalent O(6) atoms to form AsO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra and corners with four equivalent Zn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the second As site, As(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form AsO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra and corners with four equivalent Zn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-64°. There are six inequivalent O sites. In the first O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one As(2) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(2) and one As(1) atom. In the third O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one As(2) atom. In the fourth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Zn(2) and one As(2) atom. In the fifth O site, O(6) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one As(1) atom. In the sixth O site, O(1) is bonded to two equivalent Ag(1), one Zn(2), and one As(2) atom to form a mixture of distorted edge and corner-sharing OZnAg2As tetrahedra. is represented by the CIF card [CIF]
data_Zn3Ag(AsO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.762
_cell_length_b   8.762
_cell_length_c   6.909
_cell_angle_alpha   74.474
_cell_angle_beta   74.474
_cell_angle_gamma   94.473
_symmetry_Int_Tables_number   1
_cell_volume   485.980
_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  0.717  0.283  0.750  1.0
  Zn  Zn1  1  0.283  0.717  0.250  1.0
  Zn  Zn2  1  0.048  0.372  0.879  1.0
  Zn  Zn3  1  0.628  0.952  0.621  1.0
  Zn  Zn4  1  0.952  0.628  0.121  1.0
  Zn  Zn5  1  0.372  0.048  0.379  1.0
  Ag  Ag6  1  0.007  0.993  0.750  1.0
  Ag  Ag7  1  0.993  0.007  0.250  1.0
  As  As8  1  0.308  0.692  0.750  1.0
  As  As9  1  0.692  0.308  0.250  1.0
  As  As10  1  0.890  0.655  0.615  1.0
  As  As11  1  0.345  0.110  0.885  1.0
  As  As12  1  0.110  0.345  0.385  1.0
  As  As13  1  0.655  0.890  0.115  1.0
  O  O14  1  0.139  0.140  0.915  1.0
  O  O15  1  0.860  0.861  0.585  1.0
  O  O16  1  0.861  0.860  0.085  1.0
  O  O17  1  0.140  0.139  0.415  1.0
  O  O18  1  0.721  0.527  0.664  1.0
  O  O19  1  0.473  0.279  0.836  1.0
  O  O20  1  0.279  0.473  0.336  1.0
  O  O21  1  0.527  0.721  0.164  1.0
  O  O22  1  0.270  0.493  0.765  1.0
  O  O23  1  0.507  0.730  0.735  1.0
  O  O24  1  0.730  0.507  0.235  1.0
  O  O25  1  0.493  0.270  0.265  1.0
  O  O26  1  0.977  0.325  0.631  1.0
  O  O27  1  0.675  0.023  0.869  1.0
  O  O28  1  0.023  0.675  0.369  1.0
  O  O29  1  0.325  0.977  0.131  1.0
  O  O30  1  0.978  0.607  0.814  1.0
  O  O31  1  0.393  0.022  0.686  1.0
  O  O32  1  0.022  0.393  0.186  1.0
  O  O33  1  0.607  0.978  0.314  1.0
  O  O34  1  0.194  0.730  0.977  1.0
  O  O35  1  0.270  0.806  0.523  1.0
  O  O36  1  0.806  0.270  0.023  1.0
  O  O37  1  0.730  0.194  0.477  1.0
[/CIF]
.
The compound described by AgZn3(AsO4)3 crystallizes in the monoclinic C2/c space group. Ag(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form distorted ZnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with four equivalent As(2)O4 tetrahedra, and edges with two equivalent Zn(2)O6 octahedra. In the second Zn site, Zn(2) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form ZnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with four equivalent As(2)O4 tetrahedra,  an edgeedge with one Zn(1)O6 octahedra, and  an edgeedge with one Zn(2)O6 octahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded to two equivalent O(3) and two equivalent O(6) atoms to form AsO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra and corners with four equivalent Zn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the second As site, As(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form AsO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra and corners with four equivalent Zn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-64°. There are six inequivalent O sites. In the first O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one As(2) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(2) and one As(1) atom. In the third O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one As(2) atom. In the fourth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Zn(2) and one As(2) atom. In the fifth O site, O(6) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one As(1) atom. In the sixth O site, O(1) is bonded to two equivalent Ag(1), one Zn(2), and one As(2) atom to form a mixture of distorted edge and corner-sharing OZnAg2As tetrahedra. is represented by the CIF card [CIF]
data_Zn3Ag(AsO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.762
_cell_length_b   8.762
_cell_length_c   6.909
_cell_angle_alpha   74.474
_cell_angle_beta   74.474
_cell_angle_gamma   94.473
_symmetry_Int_Tables_number   1
_cell_volume   485.980
_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  0.717  0.283  0.750  1.0
  Zn  Zn1  1  0.283  0.717  0.250  1.0
  Zn  Zn2  1  0.048  0.372  0.879  1.0
  Zn  Zn3  1  0.628  0.952  0.621  1.0
  Zn  Zn4  1  0.952  0.628  0.121  1.0
  Zn  Zn5  1  0.372  0.048  0.379  1.0
  Ag  Ag6  1  0.007  0.993  0.750  1.0
  Ag  Ag7  1  0.993  0.007  0.250  1.0
  As  As8  1  0.308  0.692  0.750  1.0
  As  As9  1  0.692  0.308  0.250  1.0
  As  As10  1  0.890  0.655  0.615  1.0
  As  As11  1  0.345  0.110  0.885  1.0
  As  As12  1  0.110  0.345  0.385  1.0
  As  As13  1  0.655  0.890  0.115  1.0
  O  O14  1  0.139  0.140  0.915  1.0
  O  O15  1  0.860  0.861  0.585  1.0
  O  O16  1  0.861  0.860  0.085  1.0
  O  O17  1  0.140  0.139  0.415  1.0
  O  O18  1  0.721  0.527  0.664  1.0
  O  O19  1  0.473  0.279  0.836  1.0
  O  O20  1  0.279  0.473  0.336  1.0
  O  O21  1  0.527  0.721  0.164  1.0
  O  O22  1  0.270  0.493  0.765  1.0
  O  O23  1  0.507  0.730  0.735  1.0
  O  O24  1  0.730  0.507  0.235  1.0
  O  O25  1  0.493  0.270  0.265  1.0
  O  O26  1  0.977  0.325  0.631  1.0
  O  O27  1  0.675  0.023  0.869  1.0
  O  O28  1  0.023  0.675  0.369  1.0
  O  O29  1  0.325  0.977  0.131  1.0
  O  O30  1  0.978  0.607  0.814  1.0
  O  O31  1  0.393  0.022  0.686  1.0
  O  O32  1  0.022  0.393  0.186  1.0
  O  O33  1  0.607  0.978  0.314  1.0
  O  O34  1  0.194  0.730  0.977  1.0
  O  O35  1  0.270  0.806  0.523  1.0
  O  O36  1  0.806  0.270  0.023  1.0
  O  O37  1  0.730  0.194  0.477  1.0
[/CIF]
.