ScGaO3 crystallizes in the hexagonal P6_3/mmc space group. Sc(1) is bonded to six equivalent O(1) atoms to form distorted ScO6 octahedra that share corners with six equivalent Ga(1)O5 trigonal bipyramids and edges with six equivalent Sc(1)O6 octahedra. Ga(1) is bonded to two equivalent O(1) and three equivalent O(2) atoms to form GaO5 trigonal bipyramids that share corners with six equivalent Sc(1)O6 octahedra and corners with six equivalent Ga(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 63°. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Sc(1) and one Ga(1) atom to form a mixture of edge and corner-sharing OSc3Ga tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Ga(1) atoms.
ScGaO3 crystallizes in the hexagonal P6_3/mmc space group. Sc(1) is bonded to six equivalent O(1) atoms to form distorted ScO6 octahedra that share corners with six equivalent Ga(1)O5 trigonal bipyramids and edges with six equivalent Sc(1)O6 octahedra. All Sc(1)-O(1) bond lengths are 2.15 Å. Ga(1) is bonded to two equivalent O(1) and three equivalent O(2) atoms to form GaO5 trigonal bipyramids that share corners with six equivalent Sc(1)O6 octahedra and corners with six equivalent Ga(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 63°. Both Ga(1)-O(1) bond lengths are 1.95 Å. All Ga(1)-O(2) bond lengths are 1.90 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Sc(1) and one Ga(1) atom to form a mixture of edge and corner-sharing OSc3Ga tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Ga(1) atoms.