Cs2S5O crystallizes in the triclinic P-1 space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 10-coordinate geometry to one S(3), one S(5), two equivalent S(1), two equivalent S(2), two equivalent S(4), and two equivalent O(1) atoms. In the second Cs site, Cs(2) is bonded in a 8-coordinate geometry to one S(1), one S(4), two equivalent S(3), three equivalent S(5), and one O(1) atom. There are five inequivalent S sites. In the first S site, S(1) is bonded in a single-bond geometry to one Cs(2), two equivalent Cs(1), one S(2), and one O(1) atom. In the second S site, S(2) is bonded in a 4-coordinate geometry to two equivalent Cs(1), one S(1), and one S(3) atom. In the third S site, S(3) is bonded in a 5-coordinate geometry to one Cs(1), two equivalent Cs(2), one S(2), and one S(4) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to one Cs(2), two equivalent Cs(1), one S(3), and one S(5) atom. In the fifth S site, S(5) is bonded in a 5-coordinate geometry to one Cs(1), three equivalent Cs(2), and one S(4) atom. O(1) is bonded in a 4-coordinate geometry to one Cs(2), two equivalent Cs(1), and one S(1) atom.
Cs2S5O crystallizes in the triclinic P-1 space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 10-coordinate geometry to one S(3), one S(5), two equivalent S(1), two equivalent S(2), two equivalent S(4), and two equivalent O(1) atoms. The Cs(1)-S(3) bond length is 3.55 Å. The Cs(1)-S(5) bond length is 3.92 Å. There is one shorter (3.74 Å) and one longer (3.92 Å) Cs(1)-S(1) bond length. There is one shorter (3.66 Å) and one longer (3.97 Å) Cs(1)-S(2) bond length. Both Cs(1)-S(4) bond lengths are 3.86 Å. There is one shorter (3.07 Å) and one longer (3.28 Å) Cs(1)-O(1) bond length. In the second Cs site, Cs(2) is bonded in a 8-coordinate geometry to one S(1), one S(4), two equivalent S(3), three equivalent S(5), and one O(1) atom. The Cs(2)-S(1) bond length is 4.16 Å. The Cs(2)-S(4) bond length is 3.66 Å. There is one shorter (3.76 Å) and one longer (3.84 Å) Cs(2)-S(3) bond length. There are two shorter (3.58 Å) and one longer (3.75 Å) Cs(2)-S(5) bond length. The Cs(2)-O(1) bond length is 3.37 Å. There are five inequivalent S sites. In the first S site, S(1) is bonded in a single-bond geometry to one Cs(2), two equivalent Cs(1), one S(2), and one O(1) atom. The S(1)-S(2) bond length is 2.00 Å. The S(1)-O(1) bond length is 1.54 Å. In the second S site, S(2) is bonded in a 4-coordinate geometry to two equivalent Cs(1), one S(1), and one S(3) atom. The S(2)-S(3) bond length is 2.33 Å. In the third S site, S(3) is bonded in a 5-coordinate geometry to one Cs(1), two equivalent Cs(2), one S(2), and one S(4) atom. The S(3)-S(4) bond length is 2.05 Å. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to one Cs(2), two equivalent Cs(1), one S(3), and one S(5) atom. The S(4)-S(5) bond length is 2.04 Å. In the fifth S site, S(5) is bonded in a 5-coordinate geometry to one Cs(1), three equivalent Cs(2), and one S(4) atom. O(1) is bonded in a 4-coordinate geometry to one Cs(2), two equivalent Cs(1), and one S(1) atom.