Crystal structures of 2-(benzenecarbothioyloxy)ethyl benzenecarbothioate and 2-(benzenecarbothioyloxy)ethyl benzoate

Abstract

The title compounds, C16H14O2S2and C16H14O3S, which are monomeric models (modelsDandE) for a polythionoester and a poly(ester-co-thionoester), respectively, crystallize in the space groupP21/cand are isostructural with each other. The molecule in each crystal is located on an inversion centre and has an all-transstructure. The asymmetric unit comprises one half-molecule. In the crystal, there are intermolecular C...S contacts [3.391 (3) and 3.308 (3) Å for modelsDandE, respectively] and C—H...π interactions, which form a layer structure parallel to thebcplane. The carbonyl and thiocarbonyl groups of the modelEcompound are each disordered over two equivalent sites about the inversion centre with equal occupancies.