The compound described by Y(NiO2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Y(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form YO6 octahedra that share corners with six equivalent Ni(1)O4 tetrahedra, edges with two equivalent Y(1)O6 octahedra, and edges with four equivalent Ni(2)O6 octahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NiO4 tetrahedra that share corners with six equivalent Y(1)O6 octahedra and corners with six equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-60°. In the second Ni site, Ni(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NiO6 octahedra that share corners with six equivalent Ni(1)O4 tetrahedra, edges with two equivalent Ni(2)O6 octahedra, and edges with four equivalent Y(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Y(1), one Ni(1), and two equivalent Ni(2) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to two equivalent Y(1), one Ni(1), and one Ni(2) atom. is represented by the CIF file [CIF]
data_Y(NiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.209
_cell_length_b   6.209
_cell_length_c   6.209
_cell_angle_alpha   120.564
_cell_angle_beta   117.091
_cell_angle_gamma   92.069
_symmetry_Int_Tables_number   1
_cell_volume   171.964
_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
  Y  Y0  1  0.000  0.500  0.500  1.0
  Y  Y1  1  0.500  0.500  0.000  1.0
  Ni  Ni2  1  0.372  0.122  0.250  1.0
  Ni  Ni3  1  0.628  0.878  0.750  1.0
  Ni  Ni4  1  0.000  0.500  0.000  1.0
  Ni  Ni5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.767  0.763  0.004  1.0
  O  O7  1  0.258  0.763  0.496  1.0
  O  O8  1  0.759  0.760  0.501  1.0
  O  O9  1  0.233  0.237  0.996  1.0
  O  O10  1  0.241  0.742  0.001  1.0
  O  O11  1  0.742  0.237  0.504  1.0
  O  O12  1  0.759  0.258  0.999  1.0
  O  O13  1  0.241  0.240  0.499  1.0
[/CIF]
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The compound described by Y(NiO2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Y(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form YO6 octahedra that share corners with six equivalent Ni(1)O4 tetrahedra, edges with two equivalent Y(1)O6 octahedra, and edges with four equivalent Ni(2)O6 octahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NiO4 tetrahedra that share corners with six equivalent Y(1)O6 octahedra and corners with six equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-60°. In the second Ni site, Ni(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NiO6 octahedra that share corners with six equivalent Ni(1)O4 tetrahedra, edges with two equivalent Ni(2)O6 octahedra, and edges with four equivalent Y(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Y(1), one Ni(1), and two equivalent Ni(2) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to two equivalent Y(1), one Ni(1), and one Ni(2) atom. is represented by the CIF file [CIF]
data_Y(NiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.209
_cell_length_b   6.209
_cell_length_c   6.209
_cell_angle_alpha   120.564
_cell_angle_beta   117.091
_cell_angle_gamma   92.069
_symmetry_Int_Tables_number   1
_cell_volume   171.964
_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
  Y  Y0  1  0.000  0.500  0.500  1.0
  Y  Y1  1  0.500  0.500  0.000  1.0
  Ni  Ni2  1  0.372  0.122  0.250  1.0
  Ni  Ni3  1  0.628  0.878  0.750  1.0
  Ni  Ni4  1  0.000  0.500  0.000  1.0
  Ni  Ni5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.767  0.763  0.004  1.0
  O  O7  1  0.258  0.763  0.496  1.0
  O  O8  1  0.759  0.760  0.501  1.0
  O  O9  1  0.233  0.237  0.996  1.0
  O  O10  1  0.241  0.742  0.001  1.0
  O  O11  1  0.742  0.237  0.504  1.0
  O  O12  1  0.759  0.258  0.999  1.0
  O  O13  1  0.241  0.240  0.499  1.0
[/CIF]
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