Concomitant polymorphism and supramolecular isomerism in 1,3,5-tris (4-cyanobenzoyl) benzene

摘要

The title compound,1,3,5-tris (4-cyanobenzoyl) benzene,exhibits the phenomenon of concomitant polymorphism.Two distinct isomeric solid-state networks,honeycomb and ladder,were obtained upon crystallization from acetone-water solution.Conformational flexibility of the molecule appears to facilitate polymorph formation.Each network is maintained via formation of multiple C-H...N and C-H...O hydrogen bonds.