The crystal structure described by NiOOH crystallizes in the monoclinic Cm space group. Ni(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form edge-sharing NiO6 octahedra. H(1) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ni(1) and one H(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Ni(1) and one H(1) atom. is represented by the CIF card [CIF]
data_NiHO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.032
_cell_length_b   3.032
_cell_length_c   4.549
_cell_angle_alpha   77.274
_cell_angle_beta   77.274
_cell_angle_gamma   56.115
_symmetry_Int_Tables_number   1
_cell_volume   33.622
_cell_formula_units_Z   1
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
  Ni  Ni0  1  0.998  0.998  0.998  1.0
  H  H1  1  0.508  0.508  0.468  1.0
  O  O2  1  0.599  0.599  0.226  1.0
  O  O3  1  0.395  0.395  0.775  1.0
[/CIF]
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The crystal structure described by NiOOH crystallizes in the monoclinic Cm space group. Ni(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form edge-sharing NiO6 octahedra. H(1) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ni(1) and one H(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Ni(1) and one H(1) atom. is represented by the CIF card [CIF]
data_NiHO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.032
_cell_length_b   3.032
_cell_length_c   4.549
_cell_angle_alpha   77.274
_cell_angle_beta   77.274
_cell_angle_gamma   56.115
_symmetry_Int_Tables_number   1
_cell_volume   33.622
_cell_formula_units_Z   1
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
  Ni  Ni0  1  0.998  0.998  0.998  1.0
  H  H1  1  0.508  0.508  0.468  1.0
  O  O2  1  0.599  0.599  0.226  1.0
  O  O3  1  0.395  0.395  0.775  1.0
[/CIF]
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