FeGa2O4 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Ga(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Ga(2)O6 octahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GaO4 tetrahedra that share corners with six equivalent Fe(1)O6 octahedra and corners with six equivalent Ga(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the second Ga site, Ga(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form GaO6 octahedra that share corners with six equivalent Ga(1)O4 tetrahedra, edges with two equivalent Ga(2)O6 octahedra, and edges with four equivalent Fe(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 Ga(1), and two equivalent Ga(2) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to two equivalent Fe(1), one Ga(1), and one Ga(2) atom.
FeGa2O4 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Ga(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Ga(2)O6 octahedra. Both Fe(1)-O(1) bond lengths are 2.12 Å. All Fe(1)-O(2) bond lengths are 2.07 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GaO4 tetrahedra that share corners with six equivalent Fe(1)O6 octahedra and corners with six equivalent Ga(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. Both Ga(1)-O(1) bond lengths are 1.90 Å. Both Ga(1)-O(2) bond lengths are 1.87 Å. In the second Ga site, Ga(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form GaO6 octahedra that share corners with six equivalent Ga(1)O4 tetrahedra, edges with two equivalent Ga(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. Both Ga(2)-O(2) bond lengths are 1.98 Å. All Ga(2)-O(1) bond lengths are 2.02 Å. 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 Ga(1), and two equivalent Ga(2) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to two equivalent Fe(1), one Ga(1), and one Ga(2) atom.