2-[(E)-Benzyl­ideneamino]-N-(2-fluoro­phenyl)-4,5,6,7-tetrahydro-1-benzothio­phene-3-carboxamide

The crystal structure of the title compound, C₂₂H₁₉FN₂OS, has been determined in order to study the role of organic fluorine in crystal engineering. There is an intramolecular N—H...N hydrogen bond, but the packing is controlled by C—H...F intermolecular interactions, forming dimers which are then linked by C—H...O interactions to form tetramers.

Ethyl 2-amino-5,6,7,8-tetra­hydro-4H-cyclo­hepta­[b]­thio­phene-3-carboxyl­ate

In the structure of the title compound, C₁₂H₁₇NO₂S, the terminal ester group lies in the plane of the thio­phene ring system. The cyclo­heptene ring adopts a half-chair conformation. There are intramolecular N—H...O and C—H...O interactions, and intermolecular N—H...O and C—H...π interactions.