The material structure described by BeH2SeO4 crystallizes in the orthorhombic P2_12_12_1 space group. Be(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. 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 distorted trigonal planar geometry to one Be(1), one H(1), and one Se(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Be(1) and one Se(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Be(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Be(1), one H(1), and one H(2) atom. is represented by the CIF card [CIF]
data_BeH2SeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.718
_cell_length_b   7.628
_cell_length_c   7.952
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   346.883
_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
  Be  Be0  1  0.111  0.268  0.266  1.0
  Be  Be1  1  0.389  0.732  0.766  1.0
  Be  Be2  1  0.611  0.232  0.734  1.0
  Be  Be3  1  0.889  0.768  0.234  1.0
  H  H4  1  0.146  0.905  0.944  1.0
  H  H5  1  0.218  0.969  0.316  1.0
  H  H6  1  0.282  0.031  0.816  1.0
  H  H7  1  0.354  0.095  0.444  1.0
  H  H8  1  0.646  0.595  0.056  1.0
  H  H9  1  0.718  0.531  0.684  1.0
  H  H10  1  0.782  0.469  0.184  1.0
  H  H11  1  0.854  0.405  0.556  1.0
  Se  Se12  1  0.213  0.413  0.923  1.0
  Se  Se13  1  0.287  0.587  0.423  1.0
  Se  Se14  1  0.713  0.087  0.077  1.0
  Se  Se15  1  0.787  0.913  0.577  1.0
  O  O16  1  0.083  0.419  0.413  1.0
  O  O17  1  0.159  0.742  0.292  1.0
  O  O18  1  0.211  0.668  0.618  1.0
  O  O19  1  0.224  0.091  0.360  1.0
  O  O20  1  0.276  0.909  0.860  1.0
  O  O21  1  0.289  0.332  0.118  1.0
  O  O22  1  0.341  0.258  0.792  1.0
  O  O23  1  0.417  0.581  0.913  1.0
  O  O24  1  0.583  0.081  0.587  1.0
  O  O25  1  0.659  0.758  0.708  1.0
  O  O26  1  0.711  0.832  0.382  1.0
  O  O27  1  0.724  0.409  0.640  1.0
  O  O28  1  0.776  0.591  0.140  1.0
  O  O29  1  0.789  0.168  0.882  1.0
  O  O30  1  0.841  0.242  0.208  1.0
  O  O31  1  0.917  0.919  0.087  1.0
[/CIF]
.
The material structure described by BeH2SeO4 crystallizes in the orthorhombic P2_12_12_1 space group. Be(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. 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 distorted trigonal planar geometry to one Be(1), one H(1), and one Se(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Be(1) and one Se(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Be(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Be(1), one H(1), and one H(2) atom. is represented by the CIF card [CIF]
data_BeH2SeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.718
_cell_length_b   7.628
_cell_length_c   7.952
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   346.883
_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
  Be  Be0  1  0.111  0.268  0.266  1.0
  Be  Be1  1  0.389  0.732  0.766  1.0
  Be  Be2  1  0.611  0.232  0.734  1.0
  Be  Be3  1  0.889  0.768  0.234  1.0
  H  H4  1  0.146  0.905  0.944  1.0
  H  H5  1  0.218  0.969  0.316  1.0
  H  H6  1  0.282  0.031  0.816  1.0
  H  H7  1  0.354  0.095  0.444  1.0
  H  H8  1  0.646  0.595  0.056  1.0
  H  H9  1  0.718  0.531  0.684  1.0
  H  H10  1  0.782  0.469  0.184  1.0
  H  H11  1  0.854  0.405  0.556  1.0
  Se  Se12  1  0.213  0.413  0.923  1.0
  Se  Se13  1  0.287  0.587  0.423  1.0
  Se  Se14  1  0.713  0.087  0.077  1.0
  Se  Se15  1  0.787  0.913  0.577  1.0
  O  O16  1  0.083  0.419  0.413  1.0
  O  O17  1  0.159  0.742  0.292  1.0
  O  O18  1  0.211  0.668  0.618  1.0
  O  O19  1  0.224  0.091  0.360  1.0
  O  O20  1  0.276  0.909  0.860  1.0
  O  O21  1  0.289  0.332  0.118  1.0
  O  O22  1  0.341  0.258  0.792  1.0
  O  O23  1  0.417  0.581  0.913  1.0
  O  O24  1  0.583  0.081  0.587  1.0
  O  O25  1  0.659  0.758  0.708  1.0
  O  O26  1  0.711  0.832  0.382  1.0
  O  O27  1  0.724  0.409  0.640  1.0
  O  O28  1  0.776  0.591  0.140  1.0
  O  O29  1  0.789  0.168  0.882  1.0
  O  O30  1  0.841  0.242  0.208  1.0
  O  O31  1  0.917  0.919  0.087  1.0
[/CIF]
.