The crystal structure described by K2ZnH4(O7I2)2 crystallizes in the monoclinic C2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. Zn(1) is bonded in an octahedral geometry to one O(7), one O(8), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(8) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(5) and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(2), one H(1), and one I(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one I(1), and one I(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Zn(1), and one I(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one I(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one K(2), one H(2), and one I(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(1), one Zn(1), and one I(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Zn(1) and two equivalent H(2) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Zn(1) and two equivalent H(1) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(2), one O(4), one O(5), and one O(6) atom. is represented by the CIF card [CIF]
data_K2ZnH4(I2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.016
_cell_length_b   8.016
_cell_length_c   8.355
_cell_angle_alpha   59.015
_cell_angle_beta   59.015
_cell_angle_gamma   58.095
_symmetry_Int_Tables_number   1
_cell_volume   368.309
_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
  K  K0  1  0.976  0.024  0.000  1.0
  K  K1  1  0.500  0.500  0.000  1.0
  Zn  Zn2  1  0.041  0.959  0.500  1.0
  H  H3  1  0.423  0.670  0.374  1.0
  H  H4  1  0.661  0.243  0.471  1.0
  H  H5  1  0.757  0.339  0.529  1.0
  H  H6  1  0.330  0.577  0.626  1.0
  I  I7  1  0.471  0.004  0.017  1.0
  I  I8  1  0.995  0.557  0.483  1.0
  I  I9  1  0.443  0.005  0.517  1.0
  I  I10  1  0.996  0.529  0.983  1.0
  O  O11  1  0.564  0.718  0.135  1.0
  O  O12  1  0.558  0.074  0.131  1.0
  O  O13  1  0.193  0.057  0.169  1.0
  O  O14  1  0.071  0.604  0.219  1.0
  O  O15  1  0.487  0.248  0.414  1.0
  O  O16  1  0.881  0.835  0.466  1.0
  O  O17  1  0.780  0.220  0.500  1.0
  O  O18  1  0.307  0.693  0.500  1.0
  O  O19  1  0.165  0.119  0.534  1.0
  O  O20  1  0.752  0.513  0.586  1.0
  O  O21  1  0.396  0.929  0.781  1.0
  O  O22  1  0.943  0.807  0.831  1.0
  O  O23  1  0.926  0.442  0.869  1.0
  O  O24  1  0.282  0.436  0.865  1.0
[/CIF]
.
The crystal structure described by K2ZnH4(O7I2)2 crystallizes in the monoclinic C2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. Zn(1) is bonded in an octahedral geometry to one O(7), one O(8), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(8) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(5) and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(2), one H(1), and one I(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one I(1), and one I(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Zn(1), and one I(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one I(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one K(2), one H(2), and one I(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(1), one Zn(1), and one I(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Zn(1) and two equivalent H(2) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Zn(1) and two equivalent H(1) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(2), one O(4), one O(5), and one O(6) atom. is represented by the CIF card [CIF]
data_K2ZnH4(I2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.016
_cell_length_b   8.016
_cell_length_c   8.355
_cell_angle_alpha   59.015
_cell_angle_beta   59.015
_cell_angle_gamma   58.095
_symmetry_Int_Tables_number   1
_cell_volume   368.309
_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
  K  K0  1  0.976  0.024  0.000  1.0
  K  K1  1  0.500  0.500  0.000  1.0
  Zn  Zn2  1  0.041  0.959  0.500  1.0
  H  H3  1  0.423  0.670  0.374  1.0
  H  H4  1  0.661  0.243  0.471  1.0
  H  H5  1  0.757  0.339  0.529  1.0
  H  H6  1  0.330  0.577  0.626  1.0
  I  I7  1  0.471  0.004  0.017  1.0
  I  I8  1  0.995  0.557  0.483  1.0
  I  I9  1  0.443  0.005  0.517  1.0
  I  I10  1  0.996  0.529  0.983  1.0
  O  O11  1  0.564  0.718  0.135  1.0
  O  O12  1  0.558  0.074  0.131  1.0
  O  O13  1  0.193  0.057  0.169  1.0
  O  O14  1  0.071  0.604  0.219  1.0
  O  O15  1  0.487  0.248  0.414  1.0
  O  O16  1  0.881  0.835  0.466  1.0
  O  O17  1  0.780  0.220  0.500  1.0
  O  O18  1  0.307  0.693  0.500  1.0
  O  O19  1  0.165  0.119  0.534  1.0
  O  O20  1  0.752  0.513  0.586  1.0
  O  O21  1  0.396  0.929  0.781  1.0
  O  O22  1  0.943  0.807  0.831  1.0
  O  O23  1  0.926  0.442  0.869  1.0
  O  O24  1  0.282  0.436  0.865  1.0
[/CIF]
.