The material described by La(HSeO3)(SeO4) crystallizes in the monoclinic P2_1 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(12), one O(13), one O(14), one O(3), one O(4), one O(5), one O(7), and one O(8) atom. In the second La site, La(2) is bonded in a 10-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(2), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(11) atom. In the second H site, H(2) is bonded in a distorted linear geometry to one O(14) and one O(6) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a tetrahedral geometry to one O(10), one O(12), one O(5), and one O(8) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(6), and one O(9) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(14), one O(3), and one O(7) atom. In the fourth Se site, Se(4) is bonded in a tetrahedral geometry to one O(1), one O(11), one O(13), and one O(2) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one Se(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one La(2) and one Se(4) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to one La(1), one La(2), and one Se(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one La(1), one La(2), and one Se(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one La(1) and one Se(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one La(2), one H(2), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one La(1) and one Se(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one La(1), one La(2), and one Se(1) atom. In the ninth O site, O(9) is bonded in a linear geometry to one La(2) and one Se(2) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one La(1) and one Se(1) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one La(2), one H(1), and one Se(4) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one Se(1) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one Se(4) atom. In the fourteenth O site, O(14) is bonded in a distorted water-like geometry to one La(1), one H(2), and one Se(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaHSe2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.489
_cell_length_b   8.858
_cell_length_c   9.748
_cell_angle_alpha   103.823
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   627.923
_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
  La  La0  1  0.610  0.727  0.710  1.0
  La  La1  1  0.110  0.273  0.290  1.0
  La  La2  1  0.785  0.270  0.728  1.0
  La  La3  1  0.285  0.730  0.272  1.0
  H  H4  1  0.640  0.945  0.219  1.0
  H  H5  1  0.140  0.055  0.781  1.0
  H  H6  1  0.443  0.245  0.986  1.0
  H  H7  1  0.943  0.755  0.014  1.0
  Se  Se8  1  0.614  0.438  0.399  1.0
  Se  Se9  1  0.114  0.562  0.601  1.0
  Se  Se10  1  0.175  0.482  0.979  1.0
  Se  Se11  1  0.675  0.518  0.021  1.0
  Se  Se12  1  0.948  0.990  0.954  1.0
  Se  Se13  1  0.448  0.010  0.046  1.0
  Se  Se14  1  0.816  0.943  0.407  1.0
  Se  Se15  1  0.316  0.057  0.593  1.0
  O  O16  1  0.751  0.928  0.565  1.0
  O  O17  1  0.251  0.072  0.435  1.0
  O  O18  1  0.961  0.817  0.322  1.0
  O  O19  1  0.461  0.183  0.678  1.0
  O  O20  1  0.784  0.026  0.844  1.0
  O  O21  1  0.284  0.974  0.156  1.0
  O  O22  1  0.660  0.545  0.847  1.0
  O  O23  1  0.160  0.455  0.153  1.0
  O  O24  1  0.952  0.683  0.673  1.0
  O  O25  1  0.452  0.317  0.327  1.0
  O  O26  1  0.620  0.324  0.965  1.0
  O  O27  1  0.120  0.676  0.035  1.0
  O  O28  1  0.425  0.873  0.893  1.0
  O  O29  1  0.925  0.127  0.107  1.0
  O  O30  1  0.654  0.429  0.568  1.0
  O  O31  1  0.154  0.571  0.432  1.0
  O  O32  1  0.986  0.393  0.897  1.0
  O  O33  1  0.486  0.607  0.103  1.0
  O  O34  1  0.299  0.592  0.696  1.0
  O  O35  1  0.799  0.408  0.304  1.0
  O  O36  1  0.614  0.908  0.305  1.0
  O  O37  1  0.114  0.092  0.695  1.0
  O  O38  1  0.549  0.626  0.425  1.0
  O  O39  1  0.049  0.374  0.575  1.0
  O  O40  1  0.363  0.872  0.580  1.0
  O  O41  1  0.863  0.128  0.420  1.0
  O  O42  1  0.838  0.827  0.999  1.0
  O  O43  1  0.338  0.173  0.001  1.0
[/CIF]
.
The material described by La(HSeO3)(SeO4) crystallizes in the monoclinic P2_1 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(12), one O(13), one O(14), one O(3), one O(4), one O(5), one O(7), and one O(8) atom. In the second La site, La(2) is bonded in a 10-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(2), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(11) atom. In the second H site, H(2) is bonded in a distorted linear geometry to one O(14) and one O(6) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a tetrahedral geometry to one O(10), one O(12), one O(5), and one O(8) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(6), and one O(9) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(14), one O(3), and one O(7) atom. In the fourth Se site, Se(4) is bonded in a tetrahedral geometry to one O(1), one O(11), one O(13), and one O(2) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one Se(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one La(2) and one Se(4) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to one La(1), one La(2), and one Se(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one La(1), one La(2), and one Se(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one La(1) and one Se(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one La(2), one H(2), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one La(1) and one Se(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one La(1), one La(2), and one Se(1) atom. In the ninth O site, O(9) is bonded in a linear geometry to one La(2) and one Se(2) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one La(1) and one Se(1) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one La(2), one H(1), and one Se(4) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one Se(1) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one Se(4) atom. In the fourteenth O site, O(14) is bonded in a distorted water-like geometry to one La(1), one H(2), and one Se(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaHSe2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.489
_cell_length_b   8.858
_cell_length_c   9.748
_cell_angle_alpha   103.823
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   627.923
_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
  La  La0  1  0.610  0.727  0.710  1.0
  La  La1  1  0.110  0.273  0.290  1.0
  La  La2  1  0.785  0.270  0.728  1.0
  La  La3  1  0.285  0.730  0.272  1.0
  H  H4  1  0.640  0.945  0.219  1.0
  H  H5  1  0.140  0.055  0.781  1.0
  H  H6  1  0.443  0.245  0.986  1.0
  H  H7  1  0.943  0.755  0.014  1.0
  Se  Se8  1  0.614  0.438  0.399  1.0
  Se  Se9  1  0.114  0.562  0.601  1.0
  Se  Se10  1  0.175  0.482  0.979  1.0
  Se  Se11  1  0.675  0.518  0.021  1.0
  Se  Se12  1  0.948  0.990  0.954  1.0
  Se  Se13  1  0.448  0.010  0.046  1.0
  Se  Se14  1  0.816  0.943  0.407  1.0
  Se  Se15  1  0.316  0.057  0.593  1.0
  O  O16  1  0.751  0.928  0.565  1.0
  O  O17  1  0.251  0.072  0.435  1.0
  O  O18  1  0.961  0.817  0.322  1.0
  O  O19  1  0.461  0.183  0.678  1.0
  O  O20  1  0.784  0.026  0.844  1.0
  O  O21  1  0.284  0.974  0.156  1.0
  O  O22  1  0.660  0.545  0.847  1.0
  O  O23  1  0.160  0.455  0.153  1.0
  O  O24  1  0.952  0.683  0.673  1.0
  O  O25  1  0.452  0.317  0.327  1.0
  O  O26  1  0.620  0.324  0.965  1.0
  O  O27  1  0.120  0.676  0.035  1.0
  O  O28  1  0.425  0.873  0.893  1.0
  O  O29  1  0.925  0.127  0.107  1.0
  O  O30  1  0.654  0.429  0.568  1.0
  O  O31  1  0.154  0.571  0.432  1.0
  O  O32  1  0.986  0.393  0.897  1.0
  O  O33  1  0.486  0.607  0.103  1.0
  O  O34  1  0.299  0.592  0.696  1.0
  O  O35  1  0.799  0.408  0.304  1.0
  O  O36  1  0.614  0.908  0.305  1.0
  O  O37  1  0.114  0.092  0.695  1.0
  O  O38  1  0.549  0.626  0.425  1.0
  O  O39  1  0.049  0.374  0.575  1.0
  O  O40  1  0.363  0.872  0.580  1.0
  O  O41  1  0.863  0.128  0.420  1.0
  O  O42  1  0.838  0.827  0.999  1.0
  O  O43  1  0.338  0.173  0.001  1.0
[/CIF]
.