Influence of the nature of the substituent on the supramolecular synthon in crystals of benzo[b][1,4] diazepine derivatives

New benzo[b][1,4]diazepine derivatives, which differ only by the substituents in the positions 2 and 4 of the diazepine ring, were synthesized and studied by physicochemical methods. According to the X-ray diffraction data, the benzodiazepine moiety adopts a boat conformation in the crystal. The influence of the nature of the substituents on the type of the resulting supramolecular synthons was investigated.