3-(Benzothia­zol-2-yl)-3-(prop-2-yn­yl)hex-5-yn-2-one

The title compound, C16H13NOS, was prepared by alkyl­ation of 1-(benzothia­zol-2-yl)propan-2-one with propargyl bromide. The asymmetric unit contains two mol­ecules that are crystallographically independent but linked to each other by non-classical C—H⋯O hydrogen bonds, building up a dimeric substructure. The benzothia­zole rings are essentially planar with maximum deviations of 0.005 (1) and 0.007 (2) A for the N atoms. Although the two mol­ecules have similar bond distances and angles, they slightly differ in the orientation of the benzothia­zole ring with respect to the two propargyl groups and the acetonyl unit . In the crystal, inter­molecular C—H⋯O inter­actions link the dimeric subunits into a two-dimensional array in the bc plane.