S,S'-Butane-1,4-diyl bis-(benzene-carbo-thio-ate)

Chemistry of aromatic polythioesters and polydithioesters

Aromatic polythioesters and polydithioesters with different numbers of methylene units have been synthesized and characterized in terms of solubility, crystallinity, glass transition, melting, thermal decomposition, molecular motion, and thermal transition.

N,N'-(Ethane-1,2-di-yl)di-benzene-carbo-thio-amide

The title compound, C₁₆H₁₆N₂S₂, adopts a gauche⁺–gauche⁺–gauche⁺ (g⁺g⁺g⁺) conformation in the NH—CH₂—CH₂—NH bond sequence. In the crystal, mol­ecules are connected by pairs of N—H⋯S=C hydrogen bonds and C—H⋯π inter­actions, forming a tape structure along the c-axis direction.

Butane-1,4-diyl bis-(benzene-carbodi-thio-ate)

The title compound, C18H18S4, which lies on an inversion center, adopts a trans-gauche (+)-trans-gauche (-)-trans (tg (+) tg (-) t) conformation of the S-CH2-CH2-CH2-CH2-S bond sequence. In the crystal, a π-π inter-action with a centroid-centroid distance of 3.8797 (16) Å is observed.