The crystal structure described by SmO(OH) crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing SmO6 octahedra. The corner-sharing octahedral tilt angles are 60°. H(1) is bonded in a single-bond geometry to one O(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Sm(1) and one H(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Sm(1) atoms. is represented by the CIF file [CIF]
data_SmHO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.692
_cell_length_b   5.118
_cell_length_c   11.362
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   214.695
_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
  Sm  Sm0  1  0.250  0.086  0.854  1.0
  Sm  Sm1  1  0.250  0.414  0.354  1.0
  Sm  Sm2  1  0.750  0.586  0.646  1.0
  Sm  Sm3  1  0.750  0.914  0.146  1.0
  H  H4  1  0.250  0.127  0.591  1.0
  H  H5  1  0.250  0.373  0.091  1.0
  H  H6  1  0.750  0.627  0.909  1.0
  H  H7  1  0.750  0.873  0.409  1.0
  O  O8  1  0.250  0.189  0.064  1.0
  O  O9  1  0.750  0.174  0.308  1.0
  O  O10  1  0.750  0.326  0.808  1.0
  O  O11  1  0.250  0.311  0.564  1.0
  O  O12  1  0.750  0.689  0.436  1.0
  O  O13  1  0.250  0.674  0.192  1.0
  O  O14  1  0.250  0.826  0.692  1.0
  O  O15  1  0.750  0.811  0.936  1.0
[/CIF]
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The crystal structure described by SmO(OH) crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing SmO6 octahedra. The corner-sharing octahedral tilt angles are 60°. H(1) is bonded in a single-bond geometry to one O(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Sm(1) and one H(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Sm(1) atoms. is represented by the CIF file [CIF]
data_SmHO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.692
_cell_length_b   5.118
_cell_length_c   11.362
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   214.695
_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
  Sm  Sm0  1  0.250  0.086  0.854  1.0
  Sm  Sm1  1  0.250  0.414  0.354  1.0
  Sm  Sm2  1  0.750  0.586  0.646  1.0
  Sm  Sm3  1  0.750  0.914  0.146  1.0
  H  H4  1  0.250  0.127  0.591  1.0
  H  H5  1  0.250  0.373  0.091  1.0
  H  H6  1  0.750  0.627  0.909  1.0
  H  H7  1  0.750  0.873  0.409  1.0
  O  O8  1  0.250  0.189  0.064  1.0
  O  O9  1  0.750  0.174  0.308  1.0
  O  O10  1  0.750  0.326  0.808  1.0
  O  O11  1  0.250  0.311  0.564  1.0
  O  O12  1  0.750  0.689  0.436  1.0
  O  O13  1  0.250  0.674  0.192  1.0
  O  O14  1  0.250  0.826  0.692  1.0
  O  O15  1  0.750  0.811  0.936  1.0
[/CIF]
.