Cs3GaO3 crystallizes in the cubic P2_13 space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a distorted T-shaped geometry to three equivalent O(1) atoms. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the third Cs site, Cs(3) is bonded in a distorted trigonal planar geometry to three equivalent O(1) atoms. Ga(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a 1-coordinate geometry to one Cs(1), one Cs(3), two equivalent Cs(2), and one Ga(1) atom.
Cs3GaO3 crystallizes in the cubic P2_13 space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a distorted T-shaped geometry to three equivalent O(1) atoms. All Cs(1)-O(1) bond lengths are 2.94 Å. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. There are three shorter (3.14 Å) and three longer (3.33 Å) Cs(2)-O(1) bond lengths. In the third Cs site, Cs(3) is bonded in a distorted trigonal planar geometry to three equivalent O(1) atoms. All Cs(3)-O(1) bond lengths are 2.90 Å. Ga(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. All Ga(1)-O(1) bond lengths are 1.82 Å. O(1) is bonded in a 1-coordinate geometry to one Cs(1), one Cs(3), two equivalent Cs(2), and one Ga(1) atom.