The crystal structure described by FeNiGaO4 is Spinel-derived structured and crystallizes in the orthorhombic Imma space group. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with six equivalent Ni(1)O6 octahedra and corners with six equivalent Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-59°. Ni(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Fe(1)O4 tetrahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with four equivalent Ga(1)O6 octahedra. Ga(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form GaO6 octahedra that share corners with six equivalent Fe(1)O4 tetrahedra, edges with two equivalent Ga(1)O6 octahedra, and edges with four equivalent Ni(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 Fe(1), one Ni(1), and two equivalent Ga(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Fe(1), two equivalent Ni(1), and one Ga(1) atom. is represented by the CIF card [CIF]
data_GaFeNiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.959
_cell_length_b   5.959
_cell_length_c   5.959
_cell_angle_alpha   119.950
_cell_angle_beta   119.725
_cell_angle_gamma   90.282
_symmetry_Int_Tables_number   1
_cell_volume   149.988
_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
  Ga  Ga0  1  0.500  0.500  0.000  1.0
  Ga  Ga1  1  0.000  0.500  0.500  1.0
  Fe  Fe2  1  0.122  0.872  0.250  1.0
  Fe  Fe3  1  0.878  0.128  0.750  1.0
  Ni  Ni4  1  0.500  0.500  0.500  1.0
  Ni  Ni5  1  0.500  0.000  0.000  1.0
  O  O6  1  0.253  0.733  0.981  1.0
  O  O7  1  0.253  0.272  0.519  1.0
  O  O8  1  0.246  0.738  0.508  1.0
  O  O9  1  0.729  0.738  0.992  1.0
  O  O10  1  0.747  0.267  0.019  1.0
  O  O11  1  0.747  0.728  0.481  1.0
  O  O12  1  0.754  0.262  0.492  1.0
  O  O13  1  0.271  0.262  0.008  1.0
[/CIF]
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The crystal structure described by FeNiGaO4 is Spinel-derived structured and crystallizes in the orthorhombic Imma space group. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with six equivalent Ni(1)O6 octahedra and corners with six equivalent Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-59°. Ni(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Fe(1)O4 tetrahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with four equivalent Ga(1)O6 octahedra. Ga(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form GaO6 octahedra that share corners with six equivalent Fe(1)O4 tetrahedra, edges with two equivalent Ga(1)O6 octahedra, and edges with four equivalent Ni(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 Fe(1), one Ni(1), and two equivalent Ga(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Fe(1), two equivalent Ni(1), and one Ga(1) atom. is represented by the CIF card [CIF]
data_GaFeNiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.959
_cell_length_b   5.959
_cell_length_c   5.959
_cell_angle_alpha   119.950
_cell_angle_beta   119.725
_cell_angle_gamma   90.282
_symmetry_Int_Tables_number   1
_cell_volume   149.988
_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
  Ga  Ga0  1  0.500  0.500  0.000  1.0
  Ga  Ga1  1  0.000  0.500  0.500  1.0
  Fe  Fe2  1  0.122  0.872  0.250  1.0
  Fe  Fe3  1  0.878  0.128  0.750  1.0
  Ni  Ni4  1  0.500  0.500  0.500  1.0
  Ni  Ni5  1  0.500  0.000  0.000  1.0
  O  O6  1  0.253  0.733  0.981  1.0
  O  O7  1  0.253  0.272  0.519  1.0
  O  O8  1  0.246  0.738  0.508  1.0
  O  O9  1  0.729  0.738  0.992  1.0
  O  O10  1  0.747  0.267  0.019  1.0
  O  O11  1  0.747  0.728  0.481  1.0
  O  O12  1  0.754  0.262  0.492  1.0
  O  O13  1  0.271  0.262  0.008  1.0
[/CIF]
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