The structure described by Sr(OH)2H2O crystallizes in the monoclinic P2_1 space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Sr(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one H(1), one H(2), and one H(3) atom. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Sr(1) and one H(4) atom. is represented by the CIF file [CIF]
data_SrH4O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.621
_cell_length_b   3.664
_cell_length_c   6.123
_cell_angle_alpha   89.976
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   148.547
_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
  Sr  Sr0  1  0.751  0.999  0.630  1.0
  Sr  Sr1  1  0.251  0.001  0.370  1.0
  H  H2  1  0.828  0.788  0.121  1.0
  H  H3  1  0.829  0.207  0.121  1.0
  H  H4  1  0.328  0.212  0.879  1.0
  H  H5  1  0.329  0.793  0.879  1.0
  H  H6  1  0.598  0.495  0.969  1.0
  H  H7  1  0.098  0.505  0.031  1.0
  H  H8  1  0.602  0.501  0.295  1.0
  H  H9  1  0.102  0.499  0.705  1.0
  O  O10  1  0.876  0.997  0.214  1.0
  O  O11  1  0.376  0.003  0.786  1.0
  O  O12  1  0.742  0.498  0.943  1.0
  O  O13  1  0.242  0.502  0.057  1.0
  O  O14  1  0.535  0.500  0.436  1.0
  O  O15  1  0.035  0.500  0.564  1.0
[/CIF]
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The structure described by Sr(OH)2H2O crystallizes in the monoclinic P2_1 space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Sr(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one H(1), one H(2), and one H(3) atom. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Sr(1) and one H(4) atom. is represented by the CIF file [CIF]
data_SrH4O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.621
_cell_length_b   3.664
_cell_length_c   6.123
_cell_angle_alpha   89.976
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   148.547
_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
  Sr  Sr0  1  0.751  0.999  0.630  1.0
  Sr  Sr1  1  0.251  0.001  0.370  1.0
  H  H2  1  0.828  0.788  0.121  1.0
  H  H3  1  0.829  0.207  0.121  1.0
  H  H4  1  0.328  0.212  0.879  1.0
  H  H5  1  0.329  0.793  0.879  1.0
  H  H6  1  0.598  0.495  0.969  1.0
  H  H7  1  0.098  0.505  0.031  1.0
  H  H8  1  0.602  0.501  0.295  1.0
  H  H9  1  0.102  0.499  0.705  1.0
  O  O10  1  0.876  0.997  0.214  1.0
  O  O11  1  0.376  0.003  0.786  1.0
  O  O12  1  0.742  0.498  0.943  1.0
  O  O13  1  0.242  0.502  0.057  1.0
  O  O14  1  0.535  0.500  0.436  1.0
  O  O15  1  0.035  0.500  0.564  1.0
[/CIF]
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