The compound described by MgH2(SeO3)2 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. H(1) is bonded in a distorted linear geometry to one O(2) and one O(3) 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 three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mg(1), one H(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one H(1), and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgH2(SeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.327
_cell_length_b   5.689
_cell_length_c   10.801
_cell_angle_alpha   59.056
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   280.731
_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
  Mg  Mg0  1  0.500  0.000  0.500  1.0
  Mg  Mg1  1  0.000  0.000  0.000  1.0
  H  H2  1  0.045  0.701  0.528  1.0
  H  H3  1  0.455  0.701  0.028  1.0
  H  H4  1  0.955  0.299  0.472  1.0
  H  H5  1  0.545  0.299  0.972  1.0
  Se  Se6  1  0.320  0.317  0.665  1.0
  Se  Se7  1  0.180  0.317  0.165  1.0
  Se  Se8  1  0.680  0.683  0.335  1.0
  Se  Se9  1  0.820  0.683  0.835  1.0
  O  O10  1  0.083  0.170  0.783  1.0
  O  O11  1  0.417  0.170  0.283  1.0
  O  O12  1  0.917  0.830  0.217  1.0
  O  O13  1  0.583  0.830  0.717  1.0
  O  O14  1  0.247  0.250  0.531  1.0
  O  O15  1  0.253  0.250  0.031  1.0
  O  O16  1  0.753  0.750  0.469  1.0
  O  O17  1  0.747  0.750  0.969  1.0
  O  O18  1  0.221  0.681  0.570  1.0
  O  O19  1  0.279  0.681  0.070  1.0
  O  O20  1  0.779  0.319  0.430  1.0
  O  O21  1  0.721  0.319  0.930  1.0
[/CIF]
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The compound described by MgH2(SeO3)2 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. H(1) is bonded in a distorted linear geometry to one O(2) and one O(3) 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 three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mg(1), one H(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one H(1), and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgH2(SeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.327
_cell_length_b   5.689
_cell_length_c   10.801
_cell_angle_alpha   59.056
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   280.731
_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
  Mg  Mg0  1  0.500  0.000  0.500  1.0
  Mg  Mg1  1  0.000  0.000  0.000  1.0
  H  H2  1  0.045  0.701  0.528  1.0
  H  H3  1  0.455  0.701  0.028  1.0
  H  H4  1  0.955  0.299  0.472  1.0
  H  H5  1  0.545  0.299  0.972  1.0
  Se  Se6  1  0.320  0.317  0.665  1.0
  Se  Se7  1  0.180  0.317  0.165  1.0
  Se  Se8  1  0.680  0.683  0.335  1.0
  Se  Se9  1  0.820  0.683  0.835  1.0
  O  O10  1  0.083  0.170  0.783  1.0
  O  O11  1  0.417  0.170  0.283  1.0
  O  O12  1  0.917  0.830  0.217  1.0
  O  O13  1  0.583  0.830  0.717  1.0
  O  O14  1  0.247  0.250  0.531  1.0
  O  O15  1  0.253  0.250  0.031  1.0
  O  O16  1  0.753  0.750  0.469  1.0
  O  O17  1  0.747  0.750  0.969  1.0
  O  O18  1  0.221  0.681  0.570  1.0
  O  O19  1  0.279  0.681  0.070  1.0
  O  O20  1  0.779  0.319  0.430  1.0
  O  O21  1  0.721  0.319  0.930  1.0
[/CIF]
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