Abstract In the course of a study aimed at the investigation of edge-to-face arene–arene interactions, substituted benzylidenefluorenes 8–16 and benzylidene-1-azafluorenes 20–24 were synthesized as mixtures of E–Z-isomers. The full structural assignment of these compounds, performed by 2D NMR experiments, is described together with a study of their E– Z isomerization under equilibrating conditions. For compounds 8–16 no correlation was ...
