Notizen: C4S82- and C16S184-: Intermediates in the Synthesis of PoIy(Carbon Sulfide)
2014
Chou, Jun-Hong | Rauchfuss, Thomas B.
(PPN)₂C₁₆S₁₈ was obtained by the addition of PPN⁺Cl⁻ to a methanolic extract of Na₂C₄Sₓ, derived from the reaction of C₆S₈O₂ and NaOMe. Centrosymmetric C₁₆S₁₈⁴⁻ consists of thiophene units unsymmetrically fused to two 1,4-dithiin rings. Solutions of C¹⁶S₁₈⁴⁻ convert to C₈S₈²⁻ with heating. When C₄Sₓ (x ~ 8) is reduced by Na/NH₃ followed by extraction and crystallization, one obtains the bicyclic polysulfide C₄S₈²⁻, crystallized as its PPh₄⁺ salt.
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