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

The title compounds are monomeric models for a polythio­noester and a poly(ester-co-thio­noester). The mol­ecules adopt all-trans structures with inter­molecular C⋯S close contacts and C—H⋯π inter­actions. Both crystals have almost the same mol­ecular packing in space group P21/c.
The title compounds, C16H14O2S2 and C16H14O3S, which are monomeric models (models D and E) for a polythio­noester and a poly(ester-co-thio­noester), respectively, crystallize in the space group P21/c and are isostructural with each other. The mol­ecule in each crystal is located on an inversion centre and has an all-trans structure. 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 models D and E, respectively] and C—H⋯π inter­actions, which form a layer structure parallel to the bc plane. The carbonyl and thio­carbonyl groups of the model E compound are each disordered over two equivalent sites about the inversion centre with equal occupancies.