Crystal engineering with p-substituted 4-ethynylbenzenes using the C–H⋯O supramolecular synthon
Abstract
The crystal structures of several para-substituted ethynylbenzene derivatives; namely, C–H⋯O hydrogen bonds. The structure of 5 contains weak bifurcated
C–H⋯S and
C–H⋯π
(C
C) interactions and that of 6,
C–H⋯π(benzene) interactions.