Preparation and X-Ray structural analysis of the remarkably stable Bis(triphenylmethyl)trisulfane-2-oxide R2S3O

Triphenylmethylthiol reacts with thionylchloride in the presence of amines to give (C₆H₅)₃CS]₂SO which crystallizes with one mole of CS₂ in the triclinic space group P1 with a = 1 193.4(4), b = 1 266.8(5), c = 1 421.6(7) pm, α = 63.79(2)°, β = 65.25(2)°, γ = 63.18(2)°, π = 1.354 g cm^?3 at ?80°C. The R₂S₃O molecules are of C₁ symmetry containing an almost planar CSSSC backbone with d_ss = 212.7(1) and 211.4(1) pm, d_cs = 188.0(2) and 188.2(2) pm, d_so = 146.9(1) pm, α_SSS = 83.8°, α_SSO = 112.0° and 112.2°, τ_CSSS = 160.7° and ?172.3°.