2-(Octa-decyl-sulfan-yl)-1,3-thia-zole.

The title compound, C(21)H(39)NS(2), crystallizes with two mol-ecules in the asymmetric unit, both having a linear 18-carbon alkyl chain bound through a thio-ether group. No π-π stacking or hydrogen bonding is observed. The orientation of the alkyl chains facilitates inter-molecular inter-actions between te chains. The structure is metrically ortho-rhom-bic but crystallizes in the monoclinic space group P2(1) and was found to be twinned by pseudomerohedry (emulating ortho-rhom-bic symmetry) and by inversion. The twin factions refined to 0.37†(4), 0.13†(4), 0.31†(5), and 0.19†(4).