CrGaO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Amm2 space group. Cr(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form CrO6 octahedra that share corners with eight equivalent Ga(1)O6 octahedra and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. Ga(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form GaO6 octahedra that share corners with eight equivalent Cr(1)O6 octahedra and edges with two equivalent Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(1) and two equivalent Ga(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Cr(1) and one Ga(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cr(1) and two equivalent Ga(1) atoms.
CrGaO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Amm2 space group. Cr(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form CrO6 octahedra that share corners with eight equivalent Ga(1)O6 octahedra and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Cr(1)-O(1) bond length is 1.86 Å. The Cr(1)-O(3) bond length is 1.87 Å. All Cr(1)-O(2) bond lengths are 1.93 Å. Ga(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form GaO6 octahedra that share corners with eight equivalent Cr(1)O6 octahedra and edges with two equivalent Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. Both Ga(1)-O(1) bond lengths are 1.97 Å. Both Ga(1)-O(2) bond lengths are 2.02 Å. Both Ga(1)-O(3) bond lengths are 1.97 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(1) and two equivalent Ga(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Cr(1) and one Ga(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cr(1) and two equivalent Ga(1) atoms.