The material described by Na2Zn(OH)4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one H(1), one O(1), one O(3), one O(4), and two equivalent O(2) atoms. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one H(4), one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Zn(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Na(1) and one O(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one Na(2) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(2) is bonded in a distorted single-bond geometry to one Na(2), two equivalent Na(1), one Zn(1), and one H(2) atom. In the second O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Na(2), one Zn(1), and one H(3) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Na(2), one Zn(1), and one H(4) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Na(1), one Na(2), one Zn(1), and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2Zn(HO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.632
_cell_length_b   8.094
_cell_length_c   11.472
_cell_angle_alpha   49.189
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   466.045
_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
  Na  Na0  1  0.562  0.486  0.288  1.0
  Na  Na1  1  0.938  0.486  0.788  1.0
  Na  Na2  1  0.438  0.514  0.712  1.0
  Na  Na3  1  0.062  0.514  0.212  1.0
  Na  Na4  1  0.749  0.984  0.508  1.0
  Na  Na5  1  0.751  0.984  0.008  1.0
  Na  Na6  1  0.251  0.016  0.492  1.0
  Na  Na7  1  0.249  0.016  0.992  1.0
  Zn  Zn8  1  0.748  0.313  0.639  1.0
  Zn  Zn9  1  0.752  0.313  0.139  1.0
  Zn  Zn10  1  0.252  0.687  0.361  1.0
  Zn  Zn11  1  0.248  0.687  0.861  1.0
  H  H12  1  0.545  0.308  0.975  1.0
  H  H13  1  0.955  0.308  0.475  1.0
  H  H14  1  0.455  0.692  0.025  1.0
  H  H15  1  0.045  0.692  0.525  1.0
  H  H16  1  0.810  0.707  0.963  1.0
  H  H17  1  0.690  0.707  0.463  1.0
  H  H18  1  0.190  0.293  0.037  1.0
  H  H19  1  0.310  0.293  0.537  1.0
  H  H20  1  0.536  0.941  0.222  1.0
  H  H21  1  0.964  0.941  0.722  1.0
  H  H22  1  0.464  0.059  0.778  1.0
  H  H23  1  0.036  0.059  0.278  1.0
  H  H24  1  0.593  0.774  0.759  1.0
  H  H25  1  0.907  0.774  0.259  1.0
  H  H26  1  0.407  0.226  0.241  1.0
  H  H27  1  0.093  0.226  0.741  1.0
  O  O28  1  0.694  0.303  0.977  1.0
  O  O29  1  0.806  0.303  0.477  1.0
  O  O30  1  0.306  0.697  0.023  1.0
  O  O31  1  0.194  0.697  0.523  1.0
  O  O32  1  0.746  0.622  0.566  1.0
  O  O33  1  0.754  0.622  0.066  1.0
  O  O34  1  0.254  0.378  0.434  1.0
  O  O35  1  0.246  0.378  0.934  1.0
  O  O36  1  0.501  0.181  0.771  1.0
  O  O37  1  0.999  0.181  0.271  1.0
  O  O38  1  0.499  0.819  0.229  1.0
  O  O39  1  0.001  0.819  0.729  1.0
  O  O40  1  0.532  0.172  0.299  1.0
  O  O41  1  0.968  0.172  0.799  1.0
  O  O42  1  0.468  0.828  0.701  1.0
  O  O43  1  0.032  0.828  0.201  1.0
[/CIF]
.
The material described by Na2Zn(OH)4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one H(1), one O(1), one O(3), one O(4), and two equivalent O(2) atoms. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one H(4), one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Zn(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Na(1) and one O(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one Na(2) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(2) is bonded in a distorted single-bond geometry to one Na(2), two equivalent Na(1), one Zn(1), and one H(2) atom. In the second O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Na(2), one Zn(1), and one H(3) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Na(2), one Zn(1), and one H(4) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Na(1), one Na(2), one Zn(1), and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2Zn(HO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.632
_cell_length_b   8.094
_cell_length_c   11.472
_cell_angle_alpha   49.189
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   466.045
_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
  Na  Na0  1  0.562  0.486  0.288  1.0
  Na  Na1  1  0.938  0.486  0.788  1.0
  Na  Na2  1  0.438  0.514  0.712  1.0
  Na  Na3  1  0.062  0.514  0.212  1.0
  Na  Na4  1  0.749  0.984  0.508  1.0
  Na  Na5  1  0.751  0.984  0.008  1.0
  Na  Na6  1  0.251  0.016  0.492  1.0
  Na  Na7  1  0.249  0.016  0.992  1.0
  Zn  Zn8  1  0.748  0.313  0.639  1.0
  Zn  Zn9  1  0.752  0.313  0.139  1.0
  Zn  Zn10  1  0.252  0.687  0.361  1.0
  Zn  Zn11  1  0.248  0.687  0.861  1.0
  H  H12  1  0.545  0.308  0.975  1.0
  H  H13  1  0.955  0.308  0.475  1.0
  H  H14  1  0.455  0.692  0.025  1.0
  H  H15  1  0.045  0.692  0.525  1.0
  H  H16  1  0.810  0.707  0.963  1.0
  H  H17  1  0.690  0.707  0.463  1.0
  H  H18  1  0.190  0.293  0.037  1.0
  H  H19  1  0.310  0.293  0.537  1.0
  H  H20  1  0.536  0.941  0.222  1.0
  H  H21  1  0.964  0.941  0.722  1.0
  H  H22  1  0.464  0.059  0.778  1.0
  H  H23  1  0.036  0.059  0.278  1.0
  H  H24  1  0.593  0.774  0.759  1.0
  H  H25  1  0.907  0.774  0.259  1.0
  H  H26  1  0.407  0.226  0.241  1.0
  H  H27  1  0.093  0.226  0.741  1.0
  O  O28  1  0.694  0.303  0.977  1.0
  O  O29  1  0.806  0.303  0.477  1.0
  O  O30  1  0.306  0.697  0.023  1.0
  O  O31  1  0.194  0.697  0.523  1.0
  O  O32  1  0.746  0.622  0.566  1.0
  O  O33  1  0.754  0.622  0.066  1.0
  O  O34  1  0.254  0.378  0.434  1.0
  O  O35  1  0.246  0.378  0.934  1.0
  O  O36  1  0.501  0.181  0.771  1.0
  O  O37  1  0.999  0.181  0.271  1.0
  O  O38  1  0.499  0.819  0.229  1.0
  O  O39  1  0.001  0.819  0.729  1.0
  O  O40  1  0.532  0.172  0.299  1.0
  O  O41  1  0.968  0.172  0.799  1.0
  O  O42  1  0.468  0.828  0.701  1.0
  O  O43  1  0.032  0.828  0.201  1.0
[/CIF]
.