(Cs3Cl5)2O2 crystallizes in the hexagonal P6_3 space group. The structure consists of two water atoms inside a Cs3Cl5 framework. In the Cs3Cl5 framework, Cs(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), and four equivalent Cl(3) atoms. There are three inequivalent Cl sites. In the first Cl site, Cl(2) is bonded in a 7-coordinate geometry to six equivalent Cs(1) and one Cl(1) atom. In the second Cl site, Cl(3) is bonded in a 4-coordinate geometry to four equivalent Cs(1) atoms. In the third Cl site, Cl(1) is bonded in a 7-coordinate geometry to six equivalent Cs(1) and one Cl(2) atom.
(Cs3Cl5)2O2 crystallizes in the hexagonal P6_3 space group. The structure consists of two water atoms inside a Cs3Cl5 framework. In the Cs3Cl5 framework, Cs(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), and four equivalent Cl(3) atoms. There is one shorter (3.65 Å) and one longer (3.85 Å) Cs(1)-Cl(1) bond length. There is one shorter (3.66 Å) and one longer (3.84 Å) Cs(1)-Cl(2) bond length. There are a spread of Cs(1)-Cl(3) bond distances ranging from 3.29-3.77 Å. There are three inequivalent Cl sites. In the first Cl site, Cl(2) is bonded in a 7-coordinate geometry to six equivalent Cs(1) and one Cl(1) atom. The Cl(2)-Cl(1) bond length is 2.66 Å. In the second Cl site, Cl(3) is bonded in a 4-coordinate geometry to four equivalent Cs(1) atoms. In the third Cl site, Cl(1) is bonded in a 7-coordinate geometry to six equivalent Cs(1) and one Cl(2) atom.