The crystal structure described by KFe2H(SeO3)4 crystallizes in the monoclinic P2 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(1), two equivalent O(2), two equivalent O(3), and two equivalent O(8) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in an octahedral geometry to one O(11), one O(12), one O(2), one O(5), one O(8), and one O(9) atom. In the second Fe site, Fe(2) is bonded in an octahedral geometry to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(7) atom. H(1) is bonded in a distorted linear geometry to one O(12) and one O(6) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(7), one O(8), and one O(9) atom. In the fourth Se site, Se(4) is bonded in a trigonal non-coplanar geometry to one O(10), one O(11), and one O(12) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one K(1), one Fe(2), and one Se(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Fe(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(1), one Fe(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one K(2), one Fe(2), and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one K(2), one Fe(1), and one Se(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Fe(2), one H(1), and one Se(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one K(1), one Fe(1), and one Se(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Fe(1) and one Se(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one K(2), one Fe(1), and one Se(4) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Fe(1), one H(1), and one Se(4) atom. is represented by the CIF file [CIF]
data_KFe2H(SeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.371
_cell_length_b   10.211
_cell_length_c   10.786
_cell_angle_alpha   83.226
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   587.396
_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
  K  K0  1  0.430  0.500  0.000  1.0
  K  K1  1  0.505  0.000  0.500  1.0
  Fe  Fe2  1  0.998  0.746  0.740  1.0
  Fe  Fe3  1  0.998  0.254  0.260  1.0
  Fe  Fe4  1  0.486  0.256  0.758  1.0
  Fe  Fe5  1  0.486  0.744  0.242  1.0
  H  H6  1  0.812  0.015  0.735  1.0
  H  H7  1  0.812  0.985  0.265  1.0
  Se  Se8  1  0.982  0.228  0.937  1.0
  Se  Se9  1  0.982  0.772  0.063  1.0
  Se  Se10  1  0.993  0.263  0.576  1.0
  Se  Se11  1  0.993  0.737  0.424  1.0
  Se  Se12  1  0.509  0.595  0.645  1.0
  Se  Se13  1  0.509  0.405  0.355  1.0
  Se  Se14  1  0.467  0.908  0.848  1.0
  Se  Se15  1  0.467  0.092  0.152  1.0
  O  O16  1  0.700  0.306  0.902  1.0
  O  O17  1  0.700  0.694  0.098  1.0
  O  O18  1  0.066  0.711  0.926  1.0
  O  O19  1  0.066  0.289  0.074  1.0
  O  O20  1  0.184  0.322  0.837  1.0
  O  O21  1  0.184  0.678  0.163  1.0
  O  O22  1  0.278  0.193  0.614  1.0
  O  O23  1  0.278  0.807  0.386  1.0
  O  O24  1  0.919  0.808  0.557  1.0
  O  O25  1  0.919  0.192  0.443  1.0
  O  O26  1  0.793  0.168  0.682  1.0
  O  O27  1  0.793  0.832  0.318  1.0
  O  O28  1  0.555  0.427  0.653  1.0
  O  O29  1  0.555  0.573  0.347  1.0
  O  O30  1  0.680  0.642  0.770  1.0
  O  O31  1  0.680  0.358  0.230  1.0
  O  O32  1  0.207  0.599  0.701  1.0
  O  O33  1  0.207  0.401  0.299  1.0
  O  O34  1  0.431  0.071  0.864  1.0
  O  O35  1  0.431  0.929  0.136  1.0
  O  O36  1  0.287  0.882  0.722  1.0
  O  O37  1  0.287  0.118  0.278  1.0
  O  O38  1  0.779  0.919  0.773  1.0
  O  O39  1  0.779  0.081  0.227  1.0
[/CIF]
.
The crystal structure described by KFe2H(SeO3)4 crystallizes in the monoclinic P2 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(1), two equivalent O(2), two equivalent O(3), and two equivalent O(8) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in an octahedral geometry to one O(11), one O(12), one O(2), one O(5), one O(8), and one O(9) atom. In the second Fe site, Fe(2) is bonded in an octahedral geometry to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(7) atom. H(1) is bonded in a distorted linear geometry to one O(12) and one O(6) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(7), one O(8), and one O(9) atom. In the fourth Se site, Se(4) is bonded in a trigonal non-coplanar geometry to one O(10), one O(11), and one O(12) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one K(1), one Fe(2), and one Se(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Fe(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(1), one Fe(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one K(2), one Fe(2), and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one K(2), one Fe(1), and one Se(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Fe(2), one H(1), and one Se(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one K(1), one Fe(1), and one Se(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Fe(1) and one Se(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one K(2), one Fe(1), and one Se(4) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Fe(1), one H(1), and one Se(4) atom. is represented by the CIF file [CIF]
data_KFe2H(SeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.371
_cell_length_b   10.211
_cell_length_c   10.786
_cell_angle_alpha   83.226
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   587.396
_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
  K  K0  1  0.430  0.500  0.000  1.0
  K  K1  1  0.505  0.000  0.500  1.0
  Fe  Fe2  1  0.998  0.746  0.740  1.0
  Fe  Fe3  1  0.998  0.254  0.260  1.0
  Fe  Fe4  1  0.486  0.256  0.758  1.0
  Fe  Fe5  1  0.486  0.744  0.242  1.0
  H  H6  1  0.812  0.015  0.735  1.0
  H  H7  1  0.812  0.985  0.265  1.0
  Se  Se8  1  0.982  0.228  0.937  1.0
  Se  Se9  1  0.982  0.772  0.063  1.0
  Se  Se10  1  0.993  0.263  0.576  1.0
  Se  Se11  1  0.993  0.737  0.424  1.0
  Se  Se12  1  0.509  0.595  0.645  1.0
  Se  Se13  1  0.509  0.405  0.355  1.0
  Se  Se14  1  0.467  0.908  0.848  1.0
  Se  Se15  1  0.467  0.092  0.152  1.0
  O  O16  1  0.700  0.306  0.902  1.0
  O  O17  1  0.700  0.694  0.098  1.0
  O  O18  1  0.066  0.711  0.926  1.0
  O  O19  1  0.066  0.289  0.074  1.0
  O  O20  1  0.184  0.322  0.837  1.0
  O  O21  1  0.184  0.678  0.163  1.0
  O  O22  1  0.278  0.193  0.614  1.0
  O  O23  1  0.278  0.807  0.386  1.0
  O  O24  1  0.919  0.808  0.557  1.0
  O  O25  1  0.919  0.192  0.443  1.0
  O  O26  1  0.793  0.168  0.682  1.0
  O  O27  1  0.793  0.832  0.318  1.0
  O  O28  1  0.555  0.427  0.653  1.0
  O  O29  1  0.555  0.573  0.347  1.0
  O  O30  1  0.680  0.642  0.770  1.0
  O  O31  1  0.680  0.358  0.230  1.0
  O  O32  1  0.207  0.599  0.701  1.0
  O  O33  1  0.207  0.401  0.299  1.0
  O  O34  1  0.431  0.071  0.864  1.0
  O  O35  1  0.431  0.929  0.136  1.0
  O  O36  1  0.287  0.882  0.722  1.0
  O  O37  1  0.287  0.118  0.278  1.0
  O  O38  1  0.779  0.919  0.773  1.0
  O  O39  1  0.779  0.081  0.227  1.0
[/CIF]
.