Sr2ScGaO5 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. Sc(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form ScO6 octahedra that share corners with four equivalent Sc(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 10°. Ga(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form GaO4 tetrahedra that share corners with two equivalent Sc(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1) and two equivalent Sc(1) atoms to form distorted OSr4Sc2 octahedra that share corners with two equivalent O(1)Sr4Sc2 octahedra, corners with four equivalent O(3)Sr2Ga2 tetrahedra, edges with two equivalent O(1)Sr4Sc2 octahedra, and faces with four equivalent O(1)Sr4Sc2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Sc(1), and one Ga(1) atom. In the third O site, O(3) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with eight equivalent O(1)Sr4Sc2 octahedra and corners with two equivalent O(3)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 14-88°.
Sr2ScGaO5 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. The Sr(1)-O(3) bond length is 2.52 Å. There are a spread of Sr(1)-O(2) bond distances ranging from 2.52-3.06 Å. There are a spread of Sr(1)-O(1) bond distances ranging from 2.64-2.74 Å. Sc(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form ScO6 octahedra that share corners with four equivalent Sc(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 10°. Both Sc(1)-O(2) bond lengths are 2.24 Å. There are two shorter (2.08 Å) and two longer (2.09 Å) Sc(1)-O(1) bond lengths. Ga(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form GaO4 tetrahedra that share corners with two equivalent Sc(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. Both Ga(1)-O(2) bond lengths are 1.84 Å. There is one shorter (1.92 Å) and one longer (1.93 Å) Ga(1)-O(3) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1) and two equivalent Sc(1) atoms to form distorted OSr4Sc2 octahedra that share corners with two equivalent O(1)Sr4Sc2 octahedra, corners with four equivalent O(3)Sr2Ga2 tetrahedra, edges with two equivalent O(1)Sr4Sc2 octahedra, and faces with four equivalent O(1)Sr4Sc2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Sc(1), and one Ga(1) atom. In the third O site, O(3) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with eight equivalent O(1)Sr4Sc2 octahedra and corners with two equivalent O(3)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 14-88°.