The structure described by Zn3As2(HO)16 crystallizes in the monoclinic C2/m space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and four equivalent O(4) atoms to form ZnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(5) atoms. As(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form AsO4 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the second H site, H(2) is bonded in a distorted bent 150 degrees geometry to one O(3) and one O(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) atom. In the fourth H site, H(4) is bonded in a distorted linear geometry to one O(4) and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted 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 bent 120 degrees geometry to one As(1) and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one H(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Zn(2), one H(2), one H(3), and one H(4) atom. is represented by the CIF card [CIF]
data_Zn3As2(HO)16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.748
_cell_length_b   8.748
_cell_length_c   4.963
_cell_angle_alpha   83.548
_cell_angle_beta   83.548
_cell_angle_gamma   98.625
_symmetry_Int_Tables_number   1
_cell_volume   369.877
_cell_formula_units_Z   1
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  0.000  0.000  1.0
  Zn  Zn1  1  0.378  0.622  0.000  1.0
  Zn  Zn2  1  0.622  0.378  0.000  1.0
  As  As3  1  0.314  0.314  0.633  1.0
  As  As4  1  0.686  0.686  0.367  1.0
  H  H5  1  0.796  0.006  0.624  1.0
  H  H6  1  0.994  0.204  0.376  1.0
  H  H7  1  0.204  0.994  0.376  1.0
  H  H8  1  0.006  0.796  0.624  1.0
  H  H9  1  0.517  0.815  0.674  1.0
  H  H10  1  0.185  0.483  0.326  1.0
  H  H11  1  0.483  0.185  0.326  1.0
  H  H12  1  0.815  0.517  0.674  1.0
  H  H13  1  0.499  0.887  0.070  1.0
  H  H14  1  0.113  0.501  0.930  1.0
  H  H15  1  0.501  0.113  0.930  1.0
  H  H16  1  0.887  0.499  0.070  1.0
  H  H17  1  0.276  0.916  0.110  1.0
  H  H18  1  0.084  0.724  0.890  1.0
  H  H19  1  0.724  0.084  0.890  1.0
  H  H20  1  0.916  0.276  0.110  1.0
  O  O21  1  0.165  0.165  0.666  1.0
  O  O22  1  0.835  0.835  0.334  1.0
  O  O23  1  0.391  0.391  0.904  1.0
  O  O24  1  0.609  0.609  0.096  1.0
  O  O25  1  0.484  0.265  0.463  1.0
  O  O26  1  0.735  0.516  0.537  1.0
  O  O27  1  0.516  0.735  0.537  1.0
  O  O28  1  0.265  0.484  0.463  1.0
  O  O29  1  0.048  0.818  0.793  1.0
  O  O30  1  0.182  0.952  0.207  1.0
  O  O31  1  0.952  0.182  0.207  1.0
  O  O32  1  0.818  0.048  0.793  1.0
  O  O33  1  0.577  0.146  0.049  1.0
  O  O34  1  0.854  0.423  0.951  1.0
  O  O35  1  0.423  0.854  0.951  1.0
  O  O36  1  0.146  0.577  0.049  1.0
[/CIF]
.
The structure described by Zn3As2(HO)16 crystallizes in the monoclinic C2/m space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and four equivalent O(4) atoms to form ZnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(5) atoms. As(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form AsO4 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the second H site, H(2) is bonded in a distorted bent 150 degrees geometry to one O(3) and one O(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) atom. In the fourth H site, H(4) is bonded in a distorted linear geometry to one O(4) and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted 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 bent 120 degrees geometry to one As(1) and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one H(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Zn(2), one H(2), one H(3), and one H(4) atom. is represented by the CIF card [CIF]
data_Zn3As2(HO)16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.748
_cell_length_b   8.748
_cell_length_c   4.963
_cell_angle_alpha   83.548
_cell_angle_beta   83.548
_cell_angle_gamma   98.625
_symmetry_Int_Tables_number   1
_cell_volume   369.877
_cell_formula_units_Z   1
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  0.000  0.000  1.0
  Zn  Zn1  1  0.378  0.622  0.000  1.0
  Zn  Zn2  1  0.622  0.378  0.000  1.0
  As  As3  1  0.314  0.314  0.633  1.0
  As  As4  1  0.686  0.686  0.367  1.0
  H  H5  1  0.796  0.006  0.624  1.0
  H  H6  1  0.994  0.204  0.376  1.0
  H  H7  1  0.204  0.994  0.376  1.0
  H  H8  1  0.006  0.796  0.624  1.0
  H  H9  1  0.517  0.815  0.674  1.0
  H  H10  1  0.185  0.483  0.326  1.0
  H  H11  1  0.483  0.185  0.326  1.0
  H  H12  1  0.815  0.517  0.674  1.0
  H  H13  1  0.499  0.887  0.070  1.0
  H  H14  1  0.113  0.501  0.930  1.0
  H  H15  1  0.501  0.113  0.930  1.0
  H  H16  1  0.887  0.499  0.070  1.0
  H  H17  1  0.276  0.916  0.110  1.0
  H  H18  1  0.084  0.724  0.890  1.0
  H  H19  1  0.724  0.084  0.890  1.0
  H  H20  1  0.916  0.276  0.110  1.0
  O  O21  1  0.165  0.165  0.666  1.0
  O  O22  1  0.835  0.835  0.334  1.0
  O  O23  1  0.391  0.391  0.904  1.0
  O  O24  1  0.609  0.609  0.096  1.0
  O  O25  1  0.484  0.265  0.463  1.0
  O  O26  1  0.735  0.516  0.537  1.0
  O  O27  1  0.516  0.735  0.537  1.0
  O  O28  1  0.265  0.484  0.463  1.0
  O  O29  1  0.048  0.818  0.793  1.0
  O  O30  1  0.182  0.952  0.207  1.0
  O  O31  1  0.952  0.182  0.207  1.0
  O  O32  1  0.818  0.048  0.793  1.0
  O  O33  1  0.577  0.146  0.049  1.0
  O  O34  1  0.854  0.423  0.951  1.0
  O  O35  1  0.423  0.854  0.951  1.0
  O  O36  1  0.146  0.577  0.049  1.0
[/CIF]
.