The structure described by VHSe2O7NH4 crystallizes in the monoclinic P2_1/m space group. The structure consists of two ammonium molecules inside a VHSe2O7 framework. In the VHSe2O7 framework, V(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. H(1) is bonded in a linear geometry to two equivalent O(3) atoms. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one V(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one V(1) and one Se(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one H(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent V(1) atoms. is represented by the CIF card [CIF]
data_VH5Se2NO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.671
_cell_length_b   4.056
_cell_length_c   8.064
_cell_angle_alpha   81.455
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   345.159
_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
  V  V0  1  0.750  0.432  0.546  1.0
  V  V1  1  0.250  0.568  0.454  1.0
  H  H2  1  0.000  0.500  0.000  1.0
  H  H3  1  0.500  0.500  0.000  1.0
  H  H4  1  0.171  0.978  0.989  1.0
  H  H5  1  0.671  0.022  0.011  1.0
  H  H6  1  0.829  0.022  0.011  1.0
  H  H7  1  0.329  0.978  0.989  1.0
  H  H8  1  0.250  0.312  0.898  1.0
  H  H9  1  0.750  0.688  0.102  1.0
  H  H10  1  0.250  0.227  0.108  1.0
  H  H11  1  0.750  0.773  0.892  1.0
  Se  Se12  1  0.010  0.702  0.690  1.0
  Se  Se13  1  0.510  0.298  0.310  1.0
  Se  Se14  1  0.990  0.298  0.310  1.0
  Se  Se15  1  0.490  0.702  0.690  1.0
  N  N16  1  0.250  0.124  0.998  1.0
  N  N17  1  0.750  0.876  0.002  1.0
  O  O18  1  0.117  0.418  0.630  1.0
  O  O19  1  0.617  0.582  0.370  1.0
  O  O20  1  0.883  0.582  0.370  1.0
  O  O21  1  0.383  0.418  0.630  1.0
  O  O22  1  0.876  0.457  0.729  1.0
  O  O23  1  0.376  0.543  0.271  1.0
  O  O24  1  0.124  0.543  0.271  1.0
  O  O25  1  0.624  0.457  0.729  1.0
  O  O26  1  0.055  0.700  0.898  1.0
  O  O27  1  0.555  0.300  0.102  1.0
  O  O28  1  0.945  0.300  0.102  1.0
  O  O29  1  0.445  0.700  0.898  1.0
  O  O30  1  0.750  0.021  0.539  1.0
  O  O31  1  0.250  0.979  0.461  1.0
[/CIF]
.
The structure described by VHSe2O7NH4 crystallizes in the monoclinic P2_1/m space group. The structure consists of two ammonium molecules inside a VHSe2O7 framework. In the VHSe2O7 framework, V(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. H(1) is bonded in a linear geometry to two equivalent O(3) atoms. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one V(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one V(1) and one Se(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one H(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent V(1) atoms. is represented by the CIF card [CIF]
data_VH5Se2NO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.671
_cell_length_b   4.056
_cell_length_c   8.064
_cell_angle_alpha   81.455
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   345.159
_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
  V  V0  1  0.750  0.432  0.546  1.0
  V  V1  1  0.250  0.568  0.454  1.0
  H  H2  1  0.000  0.500  0.000  1.0
  H  H3  1  0.500  0.500  0.000  1.0
  H  H4  1  0.171  0.978  0.989  1.0
  H  H5  1  0.671  0.022  0.011  1.0
  H  H6  1  0.829  0.022  0.011  1.0
  H  H7  1  0.329  0.978  0.989  1.0
  H  H8  1  0.250  0.312  0.898  1.0
  H  H9  1  0.750  0.688  0.102  1.0
  H  H10  1  0.250  0.227  0.108  1.0
  H  H11  1  0.750  0.773  0.892  1.0
  Se  Se12  1  0.010  0.702  0.690  1.0
  Se  Se13  1  0.510  0.298  0.310  1.0
  Se  Se14  1  0.990  0.298  0.310  1.0
  Se  Se15  1  0.490  0.702  0.690  1.0
  N  N16  1  0.250  0.124  0.998  1.0
  N  N17  1  0.750  0.876  0.002  1.0
  O  O18  1  0.117  0.418  0.630  1.0
  O  O19  1  0.617  0.582  0.370  1.0
  O  O20  1  0.883  0.582  0.370  1.0
  O  O21  1  0.383  0.418  0.630  1.0
  O  O22  1  0.876  0.457  0.729  1.0
  O  O23  1  0.376  0.543  0.271  1.0
  O  O24  1  0.124  0.543  0.271  1.0
  O  O25  1  0.624  0.457  0.729  1.0
  O  O26  1  0.055  0.700  0.898  1.0
  O  O27  1  0.555  0.300  0.102  1.0
  O  O28  1  0.945  0.300  0.102  1.0
  O  O29  1  0.445  0.700  0.898  1.0
  O  O30  1  0.750  0.021  0.539  1.0
  O  O31  1  0.250  0.979  0.461  1.0
[/CIF]
.